What to do if your 4WD light is not on?

Very cheap and easy to replace Today I hopped in my truck and the light wasn’t on! So I switched into 4×4 and then the light on the switch died.. Drove for a few minutes, then came to a red light and it lurched, clunked, and went back into 2wd all by itself.

Why are the lights on my 05 LLY not working?

Hey guys so on my 05 lly the 4×4 is acting up. For awhile it would ocassionally give me the Service 4wd message and the lights on the switch would go out. Then it would come back.

What does the 4 wheel drive light mean?

The purpose of the 4 wheel drive light is to indicate when you have engaged 4WD mode by selecting 4H. When the light flashes continuously for more than 30 seconds it signifies there is a problem somewhere on your drivetrain system and that 4WD has not engaged properly.

What does the blinking 4 wheel drive indicator mean?

So what is that 4 wheel drive indicator blinking on your dashboard means? The purpose of the 4 wheel drive light is to indicate when you have engaged 4WD mode by selecting 4H. When the light flashes continuously for more than 30 seconds it signifies there is a problem somewhere on your drivetrain system and that 4WD has not engaged properly.

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.

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.

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.

Hey guys so on my 05 lly the 4×4 is acting up. For awhile it would ocassionally give me the Service 4wd message and the lights on the switch would go out. Then it would come back.

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 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 is my service 4WD light 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.

Why are there no lights on my 4WD suburban?

Last week the message does not go away after restarting the car so I pull out the selector switch and resolder the joints then plug it back in to find that the “Service 4WD” message is gone but there are no lights at all. I press the buttons but nothing happens. I’m in 2WD.

Why are my 4 wheel drive lights not flashing?

Learn More no lights at the selector switch, service four wheel drive message, changed selector switch,encoder,fuses check wiring harnesses replaced front actuator still no luck, the selector switches lights do flash when the key is turned to start the truck 4wd will not switch. 4wd service light on.

What causes the service 4WD message to be displayed?

Share it! 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. Ready to sell? CarMax buys all kinds of cars

How does a 4 wheel drive light work?

It accomplishes this by means of a small electric motor bolted onto the transfer case that shifts a pin in place to lock the center transfer differential. The actuator allows you to shift from 2WD to 4WD on the fly and back to 2WD without stopping and can be engaged and disengaged by means of a switch inside the cabin, usually on the dashboard.

Are there any lights on my Silverado 4WD?

So I switched into 4×4 and then the light on the switch died.. Drove for a few minutes, then came to a red light and it lurched, clunked, and went back into 2wd all by itself. Last time I read codes there was nothing, but I’ll try agian today.

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.

Is the 4WD select switch a warning light?

Bad 4wd select switch on the dash. 8 times of of 10. The other 2 times is the control module. Don’t be afraid to drive it, it’s a notice light, not a warning light. GM/ASE Certified Parts Manager.

Why is there a service 4WD light on my Trailblazer?

Re: “Service 4WD” light on Trailblazer – Possible causes? (Kari) Bad 4wd select switch on the dash. 8 times of of 10. The other 2 times is the control module. Don’t be afraid to drive it, it’s a notice light, not a warning light. GM/ASE Certified Parts Manager.

Why is my 4 wheel drive light not engaging?

If you don’t shift it into neutral, the 4wd light will continue to flash and won’t get into gear. Seems to be a common occurrence on these trucks. Dodge dealers recommend engaging 4-lo, then back in 2-wheel drive, then back in 4-wheel drive hi (4H). This sequence apparently resolves the problem.

Why does my Chevy Silverado not go into 4WD?

Wire brushed it down and nothing changed. My 4wd would blink but not engage. It would engage into lower gear in 4lo but wouldn’t actually go into 4wd. Taking a closer look at the wires, I noticed that there is a small ground wire that was hidden in the tube that got unconnected. Simply put a new connector on it and works like a charm now!

What to do if your truck won’t go into 4 Hi?

Check the wiring on the shifter module motor on the transfer case and see if the wires are split or damaged. If the wires are good and the harness has no corrosion or oil in it, then remove the shifter module motor and put it on a jack or something while it is hooked up under the vehicle.

Is there a 4WD light on a 2000 Chevy Silverado?

Mine is a 2000 Silverado Z-71 Extended Cab. The part number is the longer of the two – 15709327. I believe they used this part for 1999, 2000, and 2001. You can purchase the part, APDTY 012173 4×4, Four Wheel Drive 4WD Transfer Case Selector Button Switch. Replaces GM Part Numbers 15709327, or 19168767, from amazon by clicking the link below.

What is the 4 wheel drive switch on a 2000 Chevy Silverado?

Turn the switch over and look for the part number on the back. Mine is a 2000 Silverado Z-71 Extended Cab. The part number is the longer of the two – 15709327. I believe they used this part for 1999, 2000, and 2001. You can purchase the part, APDTY 012173 4×4, Four Wheel Drive 4WD Transfer Case Selector Button Switch.

Is the 4 wheel drive switch a failure?

The 4 wheel drive switch is an extremely high failure part. i would replace it and you should be ok! hope this info helps! Testimonial: “thanks for the info. ”

What to do if your 4WD light is not on?