Common questions

Why is my service 4WD indicator not working?

Why is my service 4WD indicator not working?

If the wires are broken, the actuator won’t operate and the actuator won’t move. If it does not move to the proper position, the buttons on the dash will blink and the “Service 4WD” indicator will be lit because the TCCM never sees a complete 4WD engagement. The ground wire to my front axle actuator was the culprit on my truck.

Why are there no lights on my 4WD?

2006 silverado 1500. 4×4 would not engage on mine. I would receive service 4wd message on dash and 4wd switch would change light locations randomly. Changed swich and it did not fix the problem.

Why is my 4WD not working on my Jeep Wrangler?

They could be any of the following but not limited to: These are some of the most common reasons why your Jeep could fail to engage the 4WD system. The symptoms will differ somewhat between them, for example, the 4WD light will flash on the dash but never actually engage, or the 4WD light will shine solid, but you have no active 4WD engaged.

Why are there no lights on the selector switch?

I know this is an old thread but still very informational. On a 99 silverado 5.3 the switch lights would not come on also it was stuck in 2wd.l I replaced the actuator on the transfer case, checked the 4wd fuse in the cab, replaced the switch and the TCCM. Still no lights and no 4wd.

How often should I switch my 4WD selector?

To avoid having your 4WD selector light come on and go off at random, it’s recommended that you switch your vehicle into 4WD at least once a month and properly maintain your transfer case fluid. When the engine is cool, remove the drain and fill plug at the bottom of your transfer case, which should be facing your rear axle.

If the wires are broken, the actuator won’t operate and the actuator won’t move. If it does not move to the proper position, the buttons on the dash will blink and the “Service 4WD” indicator will be lit because the TCCM never sees a complete 4WD engagement. The ground wire to my front axle actuator was the culprit on my truck.

Why is my 4WD selector light not working?

If the 4WD selector light in your truck won’t work properly, the problem could be any number of things. However, don’t anticipate making a drive down to your local Chevrolet dealer or mechanic for help just yet.

They could be any of the following but not limited to: These are some of the most common reasons why your Jeep could fail to engage the 4WD system. The symptoms will differ somewhat between them, for example, the 4WD light will flash on the dash but never actually engage, or the 4WD light will shine solid, but you have no active 4WD engaged.

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?

What does the service 4WD light on a GM Truck mean?

The solid lights on the 4WD buttons are telling you where the transfer case encoder motor thinks it is, and blinks on the mode that it is trying to go to after you push the button. If it fails to move to the new position, it goes back to a solid light on the original position and illuminates the “SERVICE 4WD” light.

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.

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

The solid lights on the 4WD buttons are telling you where the transfer case encoder motor thinks it is, and blinks on the mode that it is trying to go to after you push the button. If it fails to move to the new position, it goes back to a solid light on the original position and illuminates the “SERVICE 4WD” light.

How can I tell if my Chevy 4 wheel drive is working?

Check the indicator lights in the knob to find out what driving setting you are in if the vehicle exhibits any unusual behavior. The lights will correspond to the “2” and up-arrow position for two-wheel-drive high, “4” and down-arrow for four-wheel drive low, and so on.

What does 4WD mean on a Silverado Sierra?

I get the “Service 4WD” message when I start the truck, and nothing happens when I turn the switch to 2WD (The indicator light on the switch goes off, and doesn’t reappear until I turn the switch back to AUTO). Our roads are mostly snow covered and I’m sure it is in 4 high.

What causes a Silverado to get stuck in 4WD?

– no real action to cause problem, just driving paved side street 4WD came on, switch lights went out and then noticed in 4WD by feel of the drive. Checked fuses in the dash panel and under the hood, all were good. Checked for loose wiring, appeared/felt fine. Swapped out the switch for a known working, no change.

– no real action to cause problem, just driving paved side street 4WD came on, switch lights went out and then noticed in 4WD by feel of the drive. Checked fuses in the dash panel and under the hood, all were good. Checked for loose wiring, appeared/felt fine. Swapped out the switch for a known working, no change.

I get the “Service 4WD” message when I start the truck, and nothing happens when I turn the switch to 2WD (The indicator light on the switch goes off, and doesn’t reappear until I turn the switch back to AUTO). Our roads are mostly snow covered and I’m sure it is in 4 high.

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Ruth Doyle