Where is the encoder motor on a GM transfer case?
Access to datastream information for GM’s NVG 246 system makes most problems simple to locate and diagnose, as our case studies demonstrate. These systems also allow bidirectional control for many outputs. The encoder motor (arrow) is mounted on the front of the transfer case and is used to lock it into 4WD.
Why does my transfer case not engage 4WD?
A faulty front axle actuator can cause the 4WD front axle to not engage properly. If it locks in 4low, then the actuator will be fine. They suck, but if it works then it works. A faulty transfer case switch can cause the 4WD front axle to not engage properly. This sounds like your best bet.
Are there lights on the transfer case selector switch?
Service 4wd and no lights… the lights on the transfer case selector switch in the dash no longer comes on. it does flash when turning the key to start the truck, but it remains in two wheel drive. Ive changed the selector switch, but that did not work.
What is mode control on GM transfer case?
The dash buttons to the right of the air vent identify this system as an NVG 246 automatic two-speed, which means it has DTCs and scan tool capabilities. mode control is a set of normally open switches that vary the voltage supplied by the transfer case module when closed.
Access to datastream information for GM’s NVG 246 system makes most problems simple to locate and diagnose, as our case studies demonstrate. These systems also allow bidirectional control for many outputs. The encoder motor (arrow) is mounted on the front of the transfer case and is used to lock it into 4WD.
Is the GMC Suburban 4WD transfer case working?
Oh BTW I have a 99 GMC suburban with the auto 4wd transfer case. Last winter when I would put it in 4wd it was making a bad noise (almost like a wheel bearing roaring) but the 4wd was working then.
Where is the 4WD warning light on a GM Truck?
On the 2000 GM truck, the complaint was no four-wheel drive, and the 4WD light in the IPC (instrument panel cluster) came on at times. (This warning light, located in the left-side LED indicator, can display various messages, from “Security” to “Low Fuel” and even “4WD/AWD.”)
The dash buttons to the right of the air vent identify this system as an NVG 246 automatic two-speed, which means it has DTCs and scan tool capabilities. mode control is a set of normally open switches that vary the voltage supplied by the transfer case module when closed.
Why does my transfer case make a grinding noise?
Transfer Case grinding noise – FIXED! Discussion in ‘ Mechanic’s Corner ‘ started by stadt11, May 23, 2010 . My transfer case has started making a horrible grinding noise. First I thought it was coming from the driveshaft or the front/rear diff, but wasn’t sure.
What does ATC stand for in GM transfer case?
The transfer case module data can be accessed with a scan tool such as the Tech 2, which is GM’s official scan tool. To get to the proper screens, you must choose the Power- train selection, then navigate your way to the ATC selections. ATC is the GM acronym for active transfer case.
When to use transfer case shift control module?
If no buttons are pressed, and the transfer case shift control module detects a voltage level outside the possible range (approx. 0.5-1.0 volts) for longer than 5 minutes, the transfer case shift control module will set this DTC if a button is held down or sticks for a period longer than 5 min- utes.
Are there transfer cases for the 2000 Chevy truck?
There were 5 transfer cases available in the 2000 model year (BW4401, BW4407, NVG-241-NP2, NVG-243-NP1, & NVG-246-NP8), also there was the auto transmission and the manual transmission available. Before you claim my bad advise, why did you post a bulletin for a specific vehicle with those options before finding out if it fit his truck?
If no buttons are pressed, and the transfer case shift control module detects a voltage level outside the possible range (approx. 0.5-1.0 volts) for longer than 5 minutes, the transfer case shift control module will set this DTC if a button is held down or sticks for a period longer than 5 min- utes.
There were 5 transfer cases available in the 2000 model year (BW4401, BW4407, NVG-241-NP2, NVG-243-NP1, & NVG-246-NP8), also there was the auto transmission and the manual transmission available. Before you claim my bad advise, why did you post a bulletin for a specific vehicle with those options before finding out if it fit his truck?
What makes up a sys-tem transfer case?
The basic sys- tem consists of a transfer case motor and encoder, front differential actua- tor, transfer case module, speed sen- sors, switches and park input and out- put to the PCM. It seems logical to use case studies to show how these systems can be repaired.
Is the encoder motor part of the motor?
First bought aftermarket 4WD selector switch as guess to fix the message. Then got OBD-II scan which would have saved me $50 on the switch that didn’t correct problem. What I learned after ordering: the encoder motor is a complete assembly.
When do you need encoder ring and gasket?
The encoder ring and small orange gasket (frequently bought together) are part of a complete assembly and only needed if you are disassembling your existing motor to fix and reuse your motor. There is a spacer between the motor and transfer case that can usually be reused.
First bought aftermarket 4WD selector switch as guess to fix the message. Then got OBD-II scan which would have saved me $50 on the switch that didn’t correct problem. What I learned after ordering: the encoder motor is a complete assembly.
The encoder ring and small orange gasket (frequently bought together) are part of a complete assembly and only needed if you are disassembling your existing motor to fix and reuse your motor. There is a spacer between the motor and transfer case that can usually be reused.
Where is the Transmission Control Module located on a Chevy?
The transmission control module is usually located at the rear of the transmission case, precisely under the cover. It is located below the engine control module.
How to change encoder motor on Silverado truck?
Figured it out. Before you attach the motor, just connect the connector (make sure you have removed the plastic protector piece that it ships with that keeps the motor in neutral). Turn the key to the on position, shift the truck into neutral and push the button for the original gear you were in (in my case 2 Hi).
How to install a new encoder in a transfer case?
o When installing the motor/encoder unit to the transfer case, make sure that the transfer case is indexed properly and it is flat against the transfer case before tightening the mounting bolts. 1. Install the NEW motor/encoder gasket to the transfer case. 2. Install the motor/encoder to the transfer case. Notice.
Where is the shift encoder motor on a Silverado?
The Shift Encoder Motor is located on the outside of the transfer case and is secured to the transfer case with 3 bolts. If your truck will not switch into 4×4 mode a faulty Shift Encoder motor maybe the cause. 2007 Chevrolet Silverado 1500 Classic & 1500 HD Classic Does this Fit my Truck?
Where is the transfer case shift encoder motor?
The 4WD Transfer Case Shift Encoder motor is the part that turns the gear inside the transfer case, allowing your vehicle to be switched into 4×4 mode. The Shift Encoder Motor is located on the outside of the transfer case and is secured to the transfer case with 3 bolts.
How to turn shift shaft on transfer case?
When I went to put the encoder motor with the new sensor back on, the notch on the shaft didn’t match up with the gear on the motor (which I had marked with a Sharpie, and was where it was when I took it off).
How do you change the encoder motor on a truck?
Turn the key to the on position, shift the truck into neutral and push the button for the original gear you were in (in my case 2 Hi). This will shift the motor into the correct position for your TC shaft and you can install it. You will hear the motor then and see the lights on your switch change from neutral to the desired position.