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What does service 4WD mean on a GMC Sierra?
Problem Description The 4WD transfer case encoder motor position sensor or the selector switch may fail causing the service 4WD message to be displayed. Fault code(s) stored in the transfer case control module will be of assistance in determining the exact fault causing the message to be displayed.
What does it mean when my truck says service 4 wheel drive?
The “Service 4WD System” message indicates a problem with the 4WD system that should be properly diagnosed and repaired. When the ignition key is turned from OFF-RUN-START and is released back to the RUN position after the vehicle starts, the 4WD warning light should go on for 1 to 2 seconds and then go out.
What does service wheel drive mean?
Vehicles that have four wheel drive systems tend to have a separate light to indicate an issue with the system. Usually labeled “Service 4WD”, when this light comes on, a code will be stored in the computer’s memory to help identify any issues. Depending on the problem, the four wheel drive may be disabled temporarily.
How do you engage 4 wheel drive on a GMC Sierra?
Here is a quick guide on how to engage 4-wheel drive GMC Sierra when driving on dicey terrains.
- Turn on the vehicle using the key.
- Put your Sierra SUV in drive or reverse mode and continue to drive until you get into a rough or slippery road.
- Check the road condition and pick a suitable 4WD setting.
Why is my service all-wheel drive light on?
The “Service AWD System” light comes on when the computer detects that there is an issue with the AWD system. In most cases an issue with the AWD system will disable the system completely in order to protect the system from further damage.
Why does my GMC Sierra 1500 say service 4WD?
Having similar issues as above, had to drive the truck in 4wd high for a short period of time without the rear drive shaft, heard a clunk and the service 4wd message came on, the front drive shaft quit which left me stranded.
What is the GM service 4 wheel drive message?
GM has issued a service bulletin # 09-04-21-001 to address a Service 4 Wheel Drive Message condition on the vehicles listed below. In addition to the Service 4 Wheel Drive Message, you may also have a C0387 or a C0569 trouble code stored.
How to service a Silverado 4 wheel drive?
Just take a soldering iron and touch it to the solder enough so it flows again and you should be good to go…doesn’t hurt to do the others while your in there, or if you can’t see which one is the open circuit… 1 month later… Bad encoder motor…
What is the GM 4 wheel drive Bulletin?
GM has issued a service bulletin # 09-04-21-001 to address a Service 4 Wheel Drive Message condition on the vehicles listed below. In addition to the Service 4 Wheel Drive Message, you may also have a C0387 or a C0569 trouble code stored. 2007–2009 Chevrolet Avalanche, Silverado, Silverado Hybrid, Suburban, Tahoe, Tahoe Hybrid