Why does my Chevy Tahoe not have 4 wheel drive?

When shifted out of 4wd, the switch opens up and no voltage goes to the actuator. Check voltage at the connector for the front actuator (at the front differential – it looks like a large bullet that threads into the front diff.) If it has 12 volts, check the transfer case switch and the power feed to the transfer case.

What is the fuse on a Chevy Tahoe 4 wheel drive?

So check the fuse. When in 4wd mode, a switch on top of the transfer case conducts 12 volts out to the actuator. Wire #50 (brown) is the 12v feed, and it conducts to the light blue wire (#900) to the actuator. When shifted out of 4wd, the switch opens up and no voltage goes to the actuator.

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.

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.

Where can I get my Chevy Tahoe 4WD serviced?

Went to switch it to 4WD for the first time I was going off road, and the red light came on and the dash board said service 4WD…any ideas or what the prob may be or cost of getting it serviced or where i can get it serviced…I live in charlotte if there are any users in the area Had “service 4wheel drive” warning coming on as well.

What’s the service light on a Chevy Tahoe?

UG! I have 4wd Tahoe switch is stock on 4hi and ,if i press 2h light is blinking service 4wd massage comes on and goes back to 4hi ,change the switch but didn’t help .

Why is my service button not working on my Chevy Tahoe?

It starts with an occasion service 4WD or traction control. Then when in normal 2 High range the indicator lights on the 4WD shift button panel will not be lit up properly, then the buttons will not respond. This all happened to me.

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.

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.

Why does my Tahoe say service 4WD?

Obviously there is something wrong as it still says service 4WD. Z71 Tahoe transfer case makes noise when going down the road. Vehicle jumped while at stoplight, like someone bumped into me. Lifted rear axle,put into 2wd ,while tires start to turn loud noise coming from transfer case and klunking sounds.

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 does my Chevy Tahoe not have 4 wheel drive?