What is the OBD code for a GMC?
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.
Where can I find the GM diagnostic trouble code?
Follow scan tool manufacturer’s operating instructions to access the Diagnostic Trouble Codes (DTC’s). Remember, these are manufacturer specific codes only. Refer to our Generic OBD II code list for definitions on all other GM diagnostic trouble codes. Manufacturer Specific Codes P1031HO2S Heater Current Monitor Control Circuit Sensors 1
How to troubleshoot a no start GM 4.3L pick up?
Testing a Cranks but Does Not Start condition on your GM 4.3L, 5.0L, 5.7L pick up, van or SUV is not that hard to do, if you have a solid diagnostic strategy. In this article I’ll show you the basics of testing such a problem.
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.
Do you need a scanner for a GM 94?
NOTE: Some 94 & 95 models do not have the B terminal. 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.
How to troubleshoot the PCM in a Chevy truck?
If your PCM fails your Chevy truck can experience a wide range of problems. The only way to diagnose a faulty PCM is to use a special tool, called an on-board diagnostic scan tool, or “OBD” scan tool. These tools are available from most auto parts stores. Locate the OBD port in your Chevy truck.
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.
Can you use an OBD2 scan tool on older GM?
As Brian alluded to in his comment, in most cases it will not work. You have to have a reader which will read OBD-I. Some readers, like the Innova 3140 will read both, and comes with all of the adapters to attach to the “older” vehicles. Brian also stated about the change to OBD-II. In the US it was mandated to change over in ’96.
What causes a flashing check engine light on a GMC Sierra?
While a majority of the time, the flashing check engine light is going to be caused by a misfire related to your Sierra’s ignition system or fuel system (as stated above), there are other issues that can cause it. Your timing chain could have jumped .
How to read GM OBD diagnostic codes for free?
How to read the codes 1 Ground terminals A and B (see diagram below) with the ignition “ON” and engine not running. The system will enter the… 2 After Code 12 is displayed, any stored trouble codes will be displayed by flashing the “CHECK ENGINE”, “SERVICE… More
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.
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.
Why is my OBD scanner not recognizing my Truck?
Every time I plug it into my CPU port, it doesn’t recognize my truck. I tested it on my friend’s 2007 Accord, and it worked fine. I’ve been troubleshooting and I can’t figure out why my truck isn’t recognized.