Why do I get a service 4 wheel drive message?

The codes and message may also be set during normal driving conditions in Auto 4WD, 4HI or 4LO. The trouble codes often set intermittently set during extreme cold or warm weather, or when the battery has a low charge. GM has issued a software update to correct the problem. DO NOT replace the Transmission case control module TCCM.

Why is my service 4WD light not working?

He found that the “rear axle motor locker actuator” for the ELSD had failed, and was causing the ESC to go into “limp” mode, as well as the ELSD to not lock up properly during some instances. This was the reason for both the “Serv 4wd” light as well as the “ESC Off” light illuminating.

What happens to the transfer case on a 4WD car?

And moving back here along the vehicle, the next thing we have is the transfer case. This is what distributes the power either to the rear wheels or the front wheels, or all of the wheels. And it also needs periodic service. The fluid in it has to be changed.

What causes a driveline noise in a 4WD car?

Driveline noises caused by loading in 4WD vehicles may be mistaken for transfer case or front axle noise because they can sound very similar. 4WD noise caused by loading may exhibit the following conditions: • The noise will be greatest on a clear, dry road and decrease on a low-traction surface.

What does the four wheel drive warning light mean?

The four wheel drive light means your car has activated four wheel drive. If the Service 4WD light is on, there may be an issue with the system. Is it safe to drive with the four wheel drive indicator lights on? Anyone who off-roads for a hobby knows that four wheel drive is a must have.

Why does a 4 wheel drive car work?

Four wheel drive requires some slippage to occur between the front and rear wheels which is why it’s perfect for gravel, snow, and sand. On dry pavement, the grip prevents any slipping from happening and enabling four wheel drive will overstress the drivetrain.

How to change 4 wheel drive from 2WD to 2WD?

Turn the transfer case shift control switch (TCSCS) to the 2WD HI position for at least 5 seconds. 6. Turn the TCSCS clockwise past the 4WD LO position to the neutral request position and hold for at least 30 seconds. 7. An audible noise from the transfer case encoder motor should occur indicating asuccessful learn procedure.

What is the 4 wheel drive trouble code?

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

What to do if your car has 4 wheel drive?

Deviations in current and position from expected values will cause this DTC to set if the ignition is ON and the system battery voltage is between 10.5–18 V. 1. The key must be in the OFF position for at least 30 seconds. 2. Engage parking brake. 3. Place transmission in Neutral. 4. Turn the key to the ACCESSORY position 5.

Is the lights on on my service 4WD?

As I drove home, the lights would go on and off intermittently. If the lights were on, I would not have the Service 4WD message, but when they go out, then I have the message. Currently, the lights have remained out and a Service 4WD message remains. Any help would be greatly appreciated.

When does the service 4WD message come up?

Does the “SERVICE 4WD” message come up as soon as you start the truck, or does it only activate after you try to select a mode other than 2 Hi?

When does the 4WD mode light go out?

When the ignition key is cycled from OFF-RUN-START and is released back to the RUN position after the vehicle starts, the 4WD mode lights should illuminate for 1 to 2 seconds and then go out. If they stay on, there is a problem with the 4WD system.

Is there a service 4WD on my Silverado?

I have a 2004 Chevy silverado the service 4WD comes I have a 2004 chevy… I have a 2004 chevy silverado.. the service 4WD comes on in the service center on dash. None of the lights are on in the 4wd selector switch. Will not ingage 4wd either. I have taken to a mechanic and he is puzzled also.

Why does the service 4WD light not come on?

Some customers may comment that the 4WD/AWD indicator lights on the selector switch do not work, or the 4WD/AWD system may be inoperative and/or the service 4WD light is illuminated. The condition is typically intermittent and always occurs at key-up. Upon investigation, the technician may find DTC C0550 set.

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

What is the GM service 4 wheel drive message?

What happens when service 4 wheel drive trouble codes are stored?

When the trouble codes are stored and the Service 4 Wheel Drive Message is displayed, the transfer case is inoperative for the rest of that particular key cycle. It will test again and reset the message on the next key cycle if the problem hasn’t been fixed. The codes may be stored with or without you requesting a transfer case shift.

Why does the service 4WD light come on?

When the Service 4WD indicator lights up it’s telling us there’s a problem related to the Transfer Case Shift Control Module, the appropriate Diagnostic Trouble Code has been stored in the control module’s memory, and it’s gonna shutdown 4×4 operation to prevent additional damage.

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

Why do I get a service 4 wheel drive message?