We have an 2001 Chevy Tahoe equipped with auto 4wd, and we have an intermittent problem with the service 4wd light coming on and the lights on the 4wd switch will not illuminate. We have tried replacing the switch. Also, the ABS and brake light come on and there is no ABS code stored.

autodr

• 260 Answers
• Posted on Nov 16, 2008

SOURCE: driver side power seat 2001 Chevy Tahoe

as long as nothing is stuck in track and you hear no noise when using switches, look for broken wire at connector or in harness. ck fuse first of course, if blown, something may be stuck in track causing it to stop and blowing fuse

SOURCE: 2001 Chevy Tahoe with ABS & Brake light on.

I hope you have the problem fixed by now, but, it is the ABS control under the truck. You need to go under the hood and open the fuse box and disconnect the 60 amp fuse for the ABS, this will turn it off before it burns up. This however will also cause the traction assist off light to stay lit all the time. To the fix the problem you can pay tons of money ($700 or so) to have the dealership install a ABS control and the problem will happen again over time. Or, remove it yourself, go on ebay and ship it off to a guy who repairs them for about $150 and you will never have the problem again. Also, if you wrap your cable ends with plastic and protect them good, you can still drive you truck while the part is being worked on. It takes about a week.

SOURCE: 2003 chevy tahoe front rear end fluid

i think what you are talking about is the front differential. you will wanna put gear oil in it. the correct weight would be found in your manual.

SOURCE: 2001 Chevy 4WD button lights don't come on - 4WD wont engage

check the solenoid on the front chunk these vehicles have had a lot of problems with these solenoids. have personally replaced about 10 of these on 98-02 models.

SOURCE: 4WD LO will not disengage what can cause this.

@ 2000 gmc: Exactly right.

asker: Also, it helps if you're rolling at about 2 mph with the steering wheels straight.
You cannot shift into 4LO with the wheels turned or when in a drive
gear. Also, it may be that you need the electric shift unit serviced.
It is not recommended to drive on dry pavement while in 4LO.