Where is the trouble code on a GMC?

When retrieving GMC trouble codes with an OBD II scan tool, proceed as follows: 1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2. Turn the ignition on.

Where is the DLC on a GM 94?

Locate Data Link Connector (DLC), see image below. Turn Ignition switch to ON position. Count the flashes on the “ CHECK ENGINE ” or “ SERVICE ENGINE ” light. NOTE: Some 94 & 95 models do not have the B terminal. In which case a scanner is required.

Which is the diagnostic code for a GMC check engine light?

1 Refer to our Generic OBD II code list for definitions on all other GMC diagnostic trouble codes. 2 Manufacturer Specific Codes 3 P1031 4 P1032 5 P1105 6 P1106 7 P1107 8 P1108 9 P1109 10 P1111

What are the trouble codes for Chevy Suburban?

Please try again later. The vehicle being worked on is a 2004 Chevy Suburban with a 5.3L engine. It had multiple trouble codes in memory P0171 and P0174 (fuel system too lean bank 1 and 2) a P0101 (MAF circuit out of range) and a P0300 (engine misfire detected). All of these were related to one single problem.

What kind of engine does a GMC pickup have?

This engine was designed as a direct replacement for 1996-2000 Chevy & GMC pickups, SUV’s, and van applications. These vehicles introduced the L31 5.7L small block featuring Vortec cylinder heads that were developed for maximum power and efficiency.

Where can I get a replacement GM engine?

Whether it be OEM genuine replacement or performance upgrade we got it. If you are looking to beef up your vehicle you can use our crate engine quick reference guide for small block, big block, RPO GM V-6, RPO GM Ecotec four cylinder, RPO and Cadillac Northstar V-8 comparability guides.

How often should I Change my GM truck engine?

Do not tow a trailer or put other heavy loads on the vehicle. Check the engine oil and coolant levels daily. At 600 Miles change the engine oil and filter using conventional (non-synthetic) oil. Check fuel and ignition settings; adjust valves (where applicable). After the first 5,000 of service synthetic engine oil may be used.

What is the OBD II fault code p2563?

OBD II fault code P2563 is a generic code hat is defined as “Turbocharger (TC) boost control position sensor- range/performance problem”, and is set when the PCM (Powertrain Control Module) detects an abnormal or implausible signal from the turbocharger boost control position sensor, given the current operating conditions…

What causes turbocharger boost sensor code p2563?

Common causes of code P2563 could include the following- Damaged, burnt, shorted, disconnected, or corroded wiring and or connectors Defective turbocharger boost control position sensor In rare cases, this code can be caused by restrictions in the inlet or exhaust system Failed or failing PCM.

What are the symptoms of engine code p2563?

What are the symptoms of code P2563? 1 Stored trouble code and possibly an illuminated warning light 2 Power loss that can vary from slight at certain engine speeds, to severe at all engine speeds 3 Fuel consumption may increase considerably 4 Engine may hesitate or stumble upon acceleration

What causes a GM truck to lose power?

If your GM truck occasionally loses the ability to accelerate and warns you of reduced engine power, that could be caused by a faulty throttle body. While not common, this issue can interfere with your engine function and cause your vehicle to lose power anywhere from once in a while to several times in a day.

What was the code name for the Duramax in 2011?

In an effort to keep up with the ever-tightening emission regulations, GM redesigned its Duramax for the 2011 model year, and this time the code name was LML.

What to do when your GMC Truck won’t start?

Try turning your key to the run position a few times (with out starting). Then try to start it. If it starts, sounds like what mine did. I replaced the fuel pump assembly and that fixed the problems. Very common problem.

What is the code for a bad crankshaft position sensor?

A diagnostic scan tool will show a code between P0335 and P0338. The check engine light doesn’t always come on, though, so you could be experiencing any of the above symptoms for some time before you see the warning light. There are a number of different problems that can cause similar symptoms to a crankshaft position sensor problem.

How often does my GMC Truck turn over?

So far this has been the case pretty much every time i am starting the truck cold. I’ll try to start it and it will turn over for about 3-4 seconds (have tried a bit longer, still no go) then i’ll stop and try to start it again, and the second time it fires right up.

What are the symptoms of a bad crankshaft position sensor?

It’s one of the most serious crankshaft position sensor symptoms. The computer receives a malfunction code when the sensor is completely gone. The symptom starts with difficulty in starting and leaves the car dead one day if you don’t get it fixed. The starting problem could be the result of electrical connection or circuit problems too. 5.

How much does it cost to repair a c0237 Chevrolet?

The cost of diagnosing the C0237 CHEVROLET code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour. As the wheel spins, the wheel speed sensor produces an Alternating Current (AC) signal.

What is the diagnostic code for a Chevy Duramax?

Below are common check engine light trouble codes for the Chevy/GM Duramax diesel. This list has been updated to includes Chevy/GM Duramax diagnostic trouble codes. At Thoroughbred Diesel we are a real diesel performance and repair shop that offers free advice. Call us at 1-866-737-4966 with any questions you may have about your diesel.

What does c0265 stand for on a GMC?

A C0265 on your Chevy or GMC Will read: Electronic Brake Control Module Relay Circuit. While that’s a mouthful, it doesn’t really give you a great idea of what the problem is. The EBCM, or electronic brake control module, is the electronic system that controls brake sensors and activates both traction control and ABS.

How much does it cost to diagnose p0332 GMC engine code?

The cost to diagnose the P0332 GMC code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

Why are blow by valves bad for GDI engines?

To compound the problem, in short-run situations, the valves never heat up enough to burn off carbon, so any blow-by that does make it to the valves will accumulate as sludge and carbon buildup. Carbon accumulation on valves is a huge issue for gas direct-injected (GDI) engines.

Why is transmission fluid leaking from the vent?

I think it’s a vent for the transmission and just runs over the transfer case. The fluid leaking out is red and l believe this is transmission fluid and not the autotrac fluid. The truck seems to drive fine and I checked the transmission fluid level and it looks good. Any reason it would be leaking from the vent tube?

Where is the vacuum line on a GMC Truck?

The year range is pretty non specific. If the truck has a vacuum hose to the transmission (to the vacuum modulator), the line will be a metal tube attached to the large tube that the transmission dipstick is in. It will come up and connect to a hose that will run to the base of the carburetor. The function of this line and…

When to do a hot check on a transmission?

Perform a hot check at the first opportunity after the normal operating sump temperature of 71-93°C (160-200°F) is reached. Note: The fluid must be hot to ensure an accurate check. The fluid level rises as temperature increases. Operate the transmission in D, DRIVE, range until normal operating temperature is reached.

What happens if the vacuum hose is missing from the transmission?

The transmission will work without this line, but the shifts will be hard as if the throttle was all the way to the floor. If the hose is broken or missing, there will also be a vacuum leak at the carburetor, causing a rough/high idle and possible an intermittent backfire.

What does the VIN number on a GMC Sierra mean?

GMC SIERRA VIN decoder Every GMC car has a unique identifier code called a VIN. This number contains vital information about the car, such as its manufacturer, year of production, the plant it was produced in, type of engine, model and more.

What causes a GMC Sierra to idle roughly?

Here are the main components of the ignition system, as well as what would cause them to make your Sierra idle roughly. Spark Plugs – One of the absolute most common causes (if not the most common reason that your Sierra may be misfiring) is the spark plugs.

Is there a way to reset a GMC fault code?

GMC specializes in sport utility vehicles, trucks and vans. If your GMC vehicle sets off a fault code, also known as a check-engine code, resetting the code after the repair has been made is a simple process. Once you locate the battery, the method for clearing the code is the same, regardless of the year, make or model of GMC vehicle.

Where is the Check Engine Light located on a GMC Sierra?

Start the vehicle and verify that the check-engine light no longer is on. The location of the hood release under the dashboard and the hood release under the hood varies by GMC make and model.

What are the codes for GMC check engine lights?

P1245Intake Plenum Switchover Valve P1250Early Fuel Evaporation Heater Circuit P1257Supercharger System Overboost P1258Engine Coolant Overtemperature – Protection Mode Active P1260Last Test Failed SCC Or Theft Detected, Vehicle Immobilized

What is the OBD2 code for a Chevy?

OBDII Chevrolet Code Definitions. Be sure to double check the codes. Anything P1000 to P1999 or P3000 to P3400 will be Manufacturer specific and may not match the ones listed here. Check specific manufacturer pages on the site, as some of them, we list the OBD2 codes on those pages for those specific vehicles.

What are the diagnostic codes for Shift Solenoid?

The most common one is the check engine light will be on with one of the following diagnostic trouble codes: P0751 1-2 Shift Solenoid Valve Performance (Shift Solenoid A Performance) P0753 1-2 Shift Solenoid Valve Electrical (Shift Solenoid A Electrical) P0756 2-3 Shift Solenoid Valve Performance (Shift Solenoid B Performance)

What are the OBD codes for GM cars?

GM OBD1 Codes 13 O2 sensor or circuit 23 MAT circuit IAC sensor (95 models) 24 vehicle speed sensor 22 TPS out of adjustment 25 MAT circuit

What are the RPO codes for a General Motors transmission?

General Motors Transmission RPO Codes RPO Code Transmission Name Auto or Manual? # of Forward Gears M29 Borg Warner- 6 Speed Manual 6 M30 4L60E Auto 4 M31 TH250 Auto 3 M32 4L65E Auto 4

How much does it cost to diagnose the p0440 GMC code?

The cost of diagnosing the P0440 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour. When is the P0440 GMC code detected? The Evaporative Emission (EVAP) system is not able to build vacuum

What should the fuel pressure be on a Chevy Silverado?

If you want to save some bucks on this purchase take a look at my recommendations here: Where To Buy A Fuel Pressure Test Gauge. FUEL PRESSURE SPECIFICATION: The fuel pressure specification for the 1999-2006 4.8L, 5.3L, 6.0L Chevrolet Silverado (Suburban, Tahoe) and GMC Sierra (Yukon, Yukon XL) is 55 to 62 PSI. Flex fuel engines: 48-54 PSI.

What are the diagnostic codes for General Motors?

GM Specific Powertrain Diagnostic Trouble Codes. P1117 Engine Coolant Temp. Signal Out-Of-Range Low. P1118 Engine Coolant Temp. Signal Out-Of-Range High. P1139 HO2S Insuff. Switching Bank 1 Sensor 2. P1187 EOT Sensor Ckt. Low Voltage.

What does a diagnostic trouble code ( DTC ) mean?

What does that mean? This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model. There are different designs of EGR (Exhaust Gas Recirculation) systems, but they all operate in a similar way.

Why does my GM car say no start no crank?

How to diagnose a no start no click on GM vehicle. If you have a late model GM vehicle and turn the key only to hear nothing, you’ll most likely think you have a dead battery—and you may. But a no start, no crank, no click condition can be far more involved than that.

What kind of fuel pump does a 1994 GMC 3500 have?

My shop put in 5 diesel fuel pump ejection pumps in a year in my 1994 GMC 6.5 torbo. He claimed he went from fuel tank to cylinders found … read more Vocational, Technical or Tra… I have a 95 GMC 3500 6.5 diesel. It turns over fine and when I release the top on fuel filter it is pumping through.

How can I reset the GM ABS brake module?

Navigate to the “ABS” menu on the computerized scan tool by pushing the down arrow button. Select “Clear all codes.” Power off the computerized scan tool and disconnect it from the DLC connector. Turn on the vehicle and verify that the ABS module is no longer lit. A computerized scan tool can be purchased online, or at any automotive supply store.

Where is the DLC connector on a GM ABS?

Locate the DLC connector found under the dashboard and just above the pedals. Plug the computerized scan tool into it and power on the scan tool. Navigate to the “ABS” menu on the computerized scan tool by pushing the down arrow button. Select “Clear all codes.” Power off the computerized scan tool and disconnect it from the DLC connector.

What does code 12 mean on GM OBD?

The system will enter the diagnostic mode. In this mode, the computer will display a Code 12, three consecutive times, by flashing the “CHECK ENGINE”, “SERVICE ENGINE SOON” or “MALFUNCTION INDICATOR LAMP” or light. A Code 12 consists of one flash, a short pause, then two flashes in rapid succession.

What does GMC OBDII OBD2 code scanner do?

GMC OBDII Readers OBD2 Code Tool Scanner. With the new GMC OBD reader system, your vehicles are now in a safe control trend which is specifically meant for very important transmission tasks. Once you have the connection system installed for your vehicle, all your minor and major problems can be detected as soon as they appear.

What is the code for service engine soon?

In this mode, the computer will display a Code 12, three consecutive times, by flashing the “CHECK ENGINE”, “SERVICE ENGINE SOON” or “MALFUNCTION INDICATOR LAMP” or light. A Code 12 consists of one flash, a short pause, then two flashes in rapid succession. 2.

What kind of parts do I need for a 1999 GMC?

1999 GMC Parts | RockAuto ALL THE PARTS YOUR CAR WILL EVER NEED Show Prices In US Dollars ($)Australian Dollars (AU$)Brazilian Real (R$)Canadian Dollars (CAD$)Swiss Francs (CHF)Euros (€)British Pounds (£)Japanese Yen (¥)Mexican Pesos (Mex$)Norwegian Krone (kr)New Zealand Dollars (NZ$) EnglishEspañolDeutschFrançais Help Order Status & Returns

What does the p0053 code on engine bank 1 mean?

What the P0053 code means. This code means the Heated Oxygen Sensor (HO2S) Resistance is out of range on engine bank 1 (side of engine with cylinder #1) and the sensor upstream or in front of the catalytic converter.

Why is my O2 sensor on my heater not working?

But there are other possible causes for a heater DTC. Before screwing in a new sensor, this simple test will determine whether everything else is in order. As vehicles grow older, there comes a point when the oxygen or air/fuel ratio sensor’s heater circuit will probably fail. When that happens, the easiest fix is to install a new sensor.

What does Bank 2 on a GM 4.3L mean?

Tells you that bank 2 is the one having the issue. Bank 2 is the engine bank that holds the spark plugs for cylinders 2, 4, 6, and 8 (5.0L, 5.7L V8) and cylinders 2, 4, and 6 (4.3L V6). Tells you that this bank’s air/fuel mixture is too fuel heavy and the PCM is reducing fuel to its maximum limit (without results).

Where is Bank 2 located on a HO2 heater?

Bank 2 is the one that has cylinders 2, 4, 6, and 8 (this one is the passenger side bank of the engine). So if you have a P0135 (HO2S Heater Performance Bank 1 Sensor 1) or a P0141 (HO2S Heater Performance Bank 1 Sensor 2), this means that this oxygen sensor is located on the side of the engine that has cylinders 1, 3, 5, and 7.

Where is Bank 2 sensor on an engine?

On Bank 2 means it is at the engine side with cylinders 2, 4, 6, 8, etc. Bank 2 Sensor 2 is the second sensor on the engine’s exhaust pipe, usually behind the catalytic converter. On Bank 2 means it is at the engine side with cylinders 2, 4, 6, 8, etc.

Why is my GMC pick up not shifting?

Beside the CHECK ENGINE LIGHT (CEL) being on and driving you nuts, your Chevy or GMC pick up (or SUV or van) may be experiencing one or several of the following symptoms: TPS diagnostic trouble codes (DTC’s) stored in the vehicle’s computer’s memory. Really BAD gas mileage. Transmission does not shift out of second gear.

What does DTC stand for in GM OBD?

Trouble Codes› GM OBD Trouble Codes› What is a DTC? A DTC is a diagnostic Trouble Code.

What should the temp be on my GMC Truck?

After getting it back from having leaking intake gasket replaced, the temp would go up to 260 before it went back to 170 and then would sit for a little bit, go back to 210, back to 170, back to 245 or so, then back to 170, but It never seemed to run hot. I changed the thermostat with a brand new 190* from NAPA and it seemed to cure a little of it.

What does GM OBD I trouble code chart mean?

GM OBD I Trouble Code Chart Code Description Code 12 No distributor reference pulse (diagnost Code 13 Oxygen sensor circuit open or no activit Code 14 Engine coolant temp sensor error (high t Code 15 Engine coolant temp sensor error (low te

What are the GM trouble codes for 2008?

Here is what I have done since Aug. 2008 I have replaced the MAF sensor, air filter, knock sensor, fuel pump, coil, tps, fuel filter, distributor cap and rotor. But guess what I am still having the same codes in this order P0327,P0171, and P0174.

Why does my car have a p0172 trouble code?

If the engine has a mechanical misfire from valve train problems or weak cylinder compression, it will send puffs of oxygen into the exhaust system. This will cause the Oxygen Sensors to receive false “lean” readings (high exhaust oxygen content). A defective Oxygen Sensor can sometimes cause a P0172.

Is there a p0147 code on the Check Engine light?

Repair and recheck. 97′ c1500 v6 4.3L I’ve changed the plugs,wires,cap,plugs,o2 bank 1 sensor 3 ,and the cat. I checked the wiring and I’ll notice its missing and get p0300 or a p0301-6 code with the p0147 the check engine light isn’t always on.

When to set the OBDII code for the evaporative emission system?

The Engine Control Module ( ECM) monitors the Evaporative Emission System ( EVAP) Vent Valve/Solenoid system wiring for opens or shorts. The ECM sets the OBDII code when EVAP Vent Valve/Solenoid is not to factory specifications. Need more information on how to fix the P0449 GMC code?

When does the ECM set the OBDII code?

The ECM sets the OBDII code when EVAP Vent Valve/Solenoid is not to factory specifications. Need more information on how to fix the P0449 GMC code?

What should I do if my GMC Sierra wont reboot?

It’s a good idea to test and see if you have any trouble codes. They may provide you clues that’ll help you fix it. Gm recommends that you power down the vehicle for 15 seconds to give the StabiliTrak time to reboot. If it works after firing your Sierra back up, great!

What’s the trouble code for a 05 Tahoe?

Code po107and ev, o, oh, c. Changed fuel sending unit, map sensor, map sensor and wiring on map sensor battery, o2 sensor, gas cap.. acts as it wants to stall after running a few minutes. Have no clew on what else it could be…. this is crazy…. Hello Everyone, I have a 05 Tahoe w/a 5.3.

How to read a GM check engine light code?

It will look like Morse Code, but it isn’t, and is real easy to interpret. The first code that will flash will be a code 12. It will be “flash, pause, flash, flash, pause, pause,” and repeat the cycle three times. The ECMwill flash each code three times, and move on to the next. If you have no codes stored, it will keep flashing code 12.

Are there any problems with the 2009 Chevy Silverado?

A couple model years back, the 2007 Silverado has an oil consumption defect at low mileage (~50k miles) — so far there’s only a very few reports of the same problem with the 2009 Silverado. The 2009 Silverado received poor side impact ratings on models not equipped with the optional side air bags.

Is the 2009 Chevy Silverado covered under warranty?

This problem may be covered under warranty. Ask your Chevrolet dealer. CarComplaints.com Notes: The 2009 Silverado has no defect trends, which is a very good sign now that it’s more than a few years old. Read more »

When do you enter the radio unlock code in a GMC?

When programmed, the stereo system becomes inoperable if the stereo ever loses power from battery disconnection or stereo removal. This protects the stereo from unauthorized use if stolen. In order to use the GM stereo, once locked, you must enter the radio unlock code successfully using specific buttons on the stereo.

What kind of engine light does a GMC Sierra 3500 have?

2011 GMC Sierra 3500 HD w/6.6 L turbo diesel with 36,000 miles. “Exhaust Fluid Poor Quality” warning just recently came on the DIC along with the engine light on the dash.

How many miles does a 2011 GMC Sierra 3500 have?

Warning that it will reduce MPH t … read more 2011 GMC Sierra 3500 HD w/6.6 L turbo diesel with 36,000 miles. “Exhaust Fluid Poor Quality” warning just recently came on the DIC along with the engine light on the dash. Put 2.5 gal. of Blue DEF int … read more

How do you check for ABS in a GMC Canyon?

If you checked all the fuses related to the ABS, I’d pull the control module off the pump unit and check for water intrusion. You can leave all the ABS pump brake lines attached and just pull the four small T25 torx bolts off the control unit for inspection.

What are the symptoms of the p0405 OBD-II trouble code?

The EGR sensor return is internally shorted to ground. The EGR sensor return wiring or connection is shorted to ground. The EGR sensor 5 volt reference voltage is open in the sensor or connection is not making contact. What are the symptoms of the P0405 code? The Check Engine Light will be illuminated and the code is set in ECM memory.

What is the OBD code for exhaust gas recirculation?

P0405 is an OBD-II generic code that the engine control module (ECM) detected the engine exhaust gas recirculation (EGR) sensor has went below its specification range. A short to ground of the sensor input to the ECM.

Are there any problems with the LLY Duramax?

In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring.

Do you need a scanner for GM OBD codes?

In which case a scanner is required. NOTE: Some 94 & 95 models that DO have the A & B terminals still require a scanner. All vehicles after 96 are OBDII,and require a scanner to access them. Diagnostic trouble codes may be cleared by disconnecting the battery ground cable for at least 20 seconds.

How to get diagnostic code for Toyota check engine light?

1 Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2 Turn the ignition on. 3 Follow scan tool manufacturer’s operating instructions to access the Diagnostic Trouble Codes (DTC’s).

What are the OBD codes for General Motors?

Close General Motors OBD-II Trouble Codes The OBD-II DTC codes here generally apply to all OBD-II GM vehicles from 1996 and newer: GMC, Chevrolet, Buick, Cadillac, and former brands Oldsmobile, Pontiac, and Saturn. There may be slight changes depending on the year/model of vehicle, you would need to consult a factory service manual for specifics.

What does the OBDII code for GMC Sierra mean?

See GMC Sierra P0442 OBDII Code for more. P0455 is a universal OBDII trouble code. This means that regardless of which make or model of vehicle, the code will mean the same thing (Sierra or not). The code technically stands for:

Where do I find the DTC code on my BMW?

Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2. Turn the ignition on. 3. Follow scan tool manufacturer’s operating instructions to access the Diagnostic Trouble Codes (DTC’s).

What was the problem with my Silverado misfire?

Duh ……….. over the years I had forgotten that the remote Voltage Regulators had “points”, and my pickup spent 6-years on the Pacific Coast prior to moving back to an arid climate. The problem was Corrosion in the points contacts from the salt air.

How big is the exhaust pipe in a GM 4.3L V6?

47.45 Vortec – Engine Block to MANUAL Transmission Bolts Type: Bolt Head: Hexagon Exhaust Manifold To Cylinder Head 22 264 29.83 Vortec – Exhaust Manifold – 2 Steps: 11 FtLbs; 22 FtLbs Type: Bolt Exhaust Pipe To Exhaust Manifold 20 240 27.12 Vortec – Exhaust Pipe to Exhaust Manifold Nuts

What was the misfiring code on my 1999 Chevy S-10?

First we replaced the plugs that were the wrong ones. With the computer conected we monitored the live data and were recordeing most of the misfires in cylinder 6, 4, 2 with an occational misfire on 5. We had no codes recorded in the ECM but the fuel trims were way off.

How much does a GMC Sierra 3500HD cost?

RIZZA BUICK GMC CADILLAC, INC. Includes $950 in cash and discounts. CIRCLE BUICK GMC, INC. Includes $1,450 in cash and discounts. WOODY BUICK-GMC, INC. Includes $450 in cash and discounts. Includes $450 in cash and discounts. Includes $950 in cash and discounts.

Where is the negative battery on a GMC?

Locate the battery. The location depends on the make, model and year, but it will be in one of the four corners of the engine bay. Put the adjustable wrench on the bolt that holds the negative battery clamp on the negative battery terminal. Loosen the bolt, and remove the clamp. Hold the negative battery clamp and wait for one minute.

Is the service 4WD light on on my GMC Sierra 1500?

4×4 buttons red light is on ,neutral. I had a “Service 4WD” msg pop up out of no where. Looks like it might be the switch based on what I’m reading out here. Wow…quality job #29.

How to clear service engine soon light 1990 to 2002 Chevy?

If playback doesn’t begin shortly, try restarting your device. As an Amazon Associate I earn from qualifying purchases. I am a participant in the Amazon Associates Program, an affiliate advertising program designed to provide a means to earn fees by linking to Amazon and affiliated sites.

How do you reset the computer on a GMC?

This scan tool can be purchased from most auto parts stores and is required to reset the vehicle’s computer. Open the door on your GMC vehicle and locate the port to the left of the fuse panel. Plug the electrical connector from the OBD scan tool into the OBD port. Turn the ignition key to the “II” position.

How does a PCM scan tool work on a car?

A scan tool plugs into the vehicles diagnostic port. Once plugged in, it acts like another module on the network, communicating back and forth. If the PCM does not respond to the scan tool, the next step is to figure out why. The PCM’s circuit must be checked before condemning the module itself.

Why is my OBD scanner not working on my GMC Sunfire?

Check your fuses, I can not remember exactly which one,but I have seen multiple times that the OBD port fuse is blown. I know some smaller GM’s (cavaliers, sunfires) are run off the electric seat fuse. The yuppie speaks the truth. Don’t ask me why GM put the OBD port on that circuit……Pull the cover and swap a fuse in that spot.

Is the diagnostic reader on my GMC truck working?

When I owned my last truck and it started idling roughly, I invested in a handheld diagnostic reader. These little machines aren’t cheap, and the problem I’m now having is pissing me off.

What are the symptoms of a bad ECM computer?

There are a few things that can tip you off that there’s a problem. Here are the four most common symptoms of a bad ECM computer: There are many reasons your Check Engine light can turn on. These range from emissions problems to faulty O2 sensors to problems with the ECM.

How does the ABS system work on a GMC?

by Alibaster Smith. The ABS brake system in a GMC vehicle uses a sophisticated ABS module to sense wheel speed. If the vehicle’s wheels stop moving while brake pressure is being applied, but the vehicle itself is still moving, the system identifies this as a skid and automatically releases brake pressure to prevent the brake system from locking up.

What’s the gas mileage on a 1999 GMC Jimmy?

Yes | No my 99 jimmy runs like a champ, the only things i have done to it is stereo,battery,tires,thermostat. the gas mileage is about 20 mpg but what do you expect its a big 4.3L i have owned several S10 blazers but the jimmy is designed better. Was this review helpful? Yes | No Just one problem after another. Was this review helpful? Yes | No

How does the transfer case encoder motor work?

The transfer case encoder motor is a bi-directional DC motor. When energized through motor control A or motor control B, the ground connection is provided by the opposing motor control circuit, which is then grounded through the transfer case control module (TCCM) ground circuit.

Where is the speed sensor on a Silverado?

This is part of the circuit between the front and rear propshaft speed sensors (mounted on the transfer case) and the transfer case control module.

Where is the encoder on a GM 4×4?

That is not the 4×4 encoder. The encoder is on the transfer case and controls the shifting movement. The GM tech might have given you good information, but you replaced a part that has nothing to do with the encoder. That part will not fix the 4wd.

How to change encoder motor / sensor in silveradosierra?

Use a spot of paint or white out. Remove the skid plate from the bottom of the transfer case. Next remove the band clamp from the output shaft boot and remove the front drive shaft. You may or may not be able to reuse the band clamp. I used a similar sized hose clamp. Now disconnect the wiring harness to the transfer case.

How to change the encoder motor / sensor?

When do I replace the encoder on my 2002 envoy?

Good Deal. I dropped it off at my local independent shop. They advised that their is a service bulletin that states when the position indicator switch is replaced on a 2002 and only on a 2002 model envoy it has to be reprogramed, which they did.

What is the diagnostic code for a Jaguar check engine light?

Refer to our Generic OBD II code list for definitions on all other Jaguar diagnostic trouble codes. Manufacturer Specific Codes P1000OBD Systems Readiness Test Not Complete P1104Mass Air Flow Sensor Circuit Ground – Read Our Article On Automotive Circuit TestingFor Help With This Jaguar Check Engine Light Code P1111System Pass

What are the engine codes on a Caterpillar C7?

Flash Code 55 signals that no detected faults have occurred since key switch was turned to the on position. Troubleshooting is not required for codes 35, 41, 47 and 55. Injection Actuation Pressure Control Valve fault. Code 18 Engine RPM Signal Fault. Code 34 Intermittent Battery Power to ECM. Code 51 High Coolant Temperature Warning. Code 61

Where can I find the OBDII GM code?

OBDII GM Code Definitions. P1109 Secondary Port Throttle System P1111 Intake Air Temperature Sensor Circuit In Wiring open circuit/short to positive, p P1112 Intake Air Temperature Sensor Circuit In Wiring short circuit to ground P1423 Intake Air High Pressure Switch Circuit

Navigation