Why is my 4WD light not working on my GMC Sierra?

Why is my 4WD light not working on my GMC Sierra?

Selector Switch was giving me issues about 3 years ago (64,000 mi). Shifting out of drive,stuck in 4WD hi/low and couldn’t switch it back or shifts to neutral and cant switch to 2WD. The sensor in the transfer case had a bad seal and fluid was getting in and shorting it out.

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.

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.

Selector Switch was giving me issues about 3 years ago (64,000 mi). Shifting out of drive,stuck in 4WD hi/low and couldn’t switch it back or shifts to neutral and cant switch to 2WD. The sensor in the transfer case had a bad seal and fluid was getting in and shorting it out.

How many 4WD Motors does a GMC Sierra have?

So in summary, I went through two 4wd Switched, 3 Encoder Motors, had wiring redone from the switch to the transfer case & whatever other part replaced on it, the auto-clutches replaced, a left front wheel speed sensor replaced, and fluids changed.

Where is the shift encoder motor on a Silverado?

The Shift Encoder Motor is located on the outside of the transfer case and is secured to the transfer case with 3 bolts. If your truck will not switch into 4×4 mode a faulty Shift Encoder motor maybe the cause. 2007 Chevrolet Silverado 1500 Classic & 1500 HD Classic Does this Fit my Truck?

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.

Is the service 4WD light on on my GMC Sierra 1500?

4×4 buttons red light is on ,neutral. I had a “Service 4WD” msg pop up out of no where. Looks like it might be the switch based on what I’m reading out here. Wow…quality job #29.

What is the factory 4WD indicator switch number?

The factory 4WD indicator switch is a three-pin switch. From what I can tell, it is ACDelco part number 15693423. From research, it appears the wiring for it is as follows: My [2003] PCM has Green connector pin 16 labeled 4WD Low Signal.

So in summary, I went through two 4wd Switched, 3 Encoder Motors, had wiring redone from the switch to the transfer case & whatever other part replaced on it, the auto-clutches replaced, a left front wheel speed sensor replaced, and fluids changed.

Where is the speed sensor on a Silverado?

This is part of the circuit between the front and rear propshaft speed sensors (mounted on the transfer case) and the transfer case control module.

What are the blinking lights on my 4×4?

After about 4 hours of crawling on the ground, I figured out what is wrong with my 4X4 blinking lights. Problem: When switching from 2 WD to 4 WD hi or 4 WD low, the lights on the dash switches would start blinking, indicating a malfunction and also I had no 4 WD.

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 the dash lights blinking on my Chevy Colorado?

Problem: When switching from 2 WD to 4 WD hi or 4 WD low, the lights on the dash switches would start blinking, indicating a malfunction and also I had no 4 WD. I troubleshot the drive line and found that all was working, except for the front drive axle actuator, part #26060073, though this is what I thought.

Why are my GM 4WD warning lights flashing?

These systems use dash-mounted mode switches and electronic controls to perform the functions of the 4WD system. They allow shift-on-the-fly from 2WD to 4WD high range. This is accomplished by locking the front differential using a remote actuator. Why Are My 4WD Lights Flashing?

After about 4 hours of crawling on the ground, I figured out what is wrong with my 4X4 blinking lights. Problem: When switching from 2 WD to 4 WD hi or 4 WD low, the lights on the dash switches would start blinking, indicating a malfunction and also I had no 4 WD.

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.

Problem: When switching from 2 WD to 4 WD hi or 4 WD low, the lights on the dash switches would start blinking, indicating a malfunction and also I had no 4 WD. I troubleshot the drive line and found that all was working, except for the front drive axle actuator, part #26060073, though this is what I thought.