What does service 4WD Mean on Chevy?

The “Service 4WD System” message does not mean it is time for routine maintenance of the 4WD system; rather, it indicates a problem with the 4WD system that should be properly diagnosed and repaired. Depending on the problem, the four wheel drive may be disabled temporarily.

What does a 4×4 service include?

Four-wheel drive vehicles demand rugged performance from their transmissions, especially when used for off-road driving or towing. Our 4×4 services include: Draining and refilling the Transfer Case with fresh, clean fluid. Draining and refilling the Front Differential with fresh, clean fluid.

What does it mean when my truck says service 4WD?

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.

Are 4WD more expensive to service?

The main disadvantage of 4WD is added cost for purchase, maintenance, and fuel. The extra equipment (differentials, transfer case, etc.) adds complexity and weight to the vehicle, increasing initial market value, tire wear, and the cost of repairs and maintenance.

Why does my dash say service 4 wheel drive?

Service 4 wheel drive in dash indicator comes on and lights go out on the transfer case switch nob. If I turn off the engine and wait for 10 min. then start truck everything is ok. and I can turn nob to whatever location I want and it will shift.

Where is the service 4×4 light on the dash?

Technicians may find DTC C0327 in the Transfer Case Control Module (TCCM) and/or DTC P0836 in the Transmission Control Module (TCM) and/or DTC P0500 and P1875 in the Powertrain Control Module (PCM). It is possible that the module may be in a mode that will not allow any shifts or updates for the software or calibrations.

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.

Why is my service 4WD message not working?

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 your service 4WD comes on?

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.

What does 4×4 service mean?

What do you do if your truck is stuck in 4 wheel drive?

How to Disengage a Stuck Four-Wheel Drive Line

Check to see if you have manual hubs and that they are in “free” mode.

Put your vehicle into four-wheel high mode.

Drive forward for about a quarter of a mile.

Stop the vehicle and shift from four-wheel to two-wheel drive.

Why does my service 4WD light come on and off?

When the 4WD light appears, it is letting you know that there is an issue with the 4WD system and it must be handled promptly. Another reason why this light may occur is an incomplete shift in gears. This is confusing and damaging to the engine and could result in your 4WD service light flashing continuously.

What does it mean when the 4×4 light flashes?

A lot of the time, a flashing 4WD light is no reason to be alarmed, because it simply means that the system is working as designed. On vehicles where four-wheel drive is only activated on demand — that is to say, when traction conditions require it — this light shows up to tell you that it’s been activated.

Is there fluid in 4WD drive?

Four wheel drive vehicles have differentials in both the front and back. The differential contains fluid that lubricates and cools the gears. As with any other lubricant, differential fluid breaks down over time. Along with the engine, the differential is very particular about its oil and condition.

Navigation