1998 Chevy Tahoe 4x4.

Asked by Jun 21, 2010 at 05:12 PM about the 1998 Chevrolet Tahoe

Question type: Maintenance & Repair

I drive a 1998 Chevy Tahoe 4x4. Recently, I was driving down the highway and my spedometer began to fluctuate greatly, then the vehicle started surging and lagging when I tried to get up to speed. Then my anti-lock brakes light came on and now my brakes are grinding.  What do you figure the problem is?

4 Answers

45

some 4x4 come with traction control that lightly applies on breaks on slipping wheel to put power to opp side. The only thing i can think of would be a malf in this system. If a malf happened and the ECM might have picked it up it would turn off TC/ABS module. Which would turn on ABS light. Hope it help keep us informed i'd like to know what happened myself

485

I'm thinking that, coincidently, you have two different unrelated problems. 1) You need a brake job, 2) your speed sensor in your tranny is going bad. When the ECM can't detect or read the speed of the tranny, it will throw it into "limp" mode not allowing it to shift out of 1st or 2nd gear(not sure exactly which gear on those), anyway, it will strange when that happens. It still should run smooth & fine while idleing.

1 of 1 people found this helpful.
25

my 97 tahoe is doing almost the same thing speed / rpm and gear slect not lighting up and not downshifting or shifting up through 1st and 2nd gear takes off in 3rd or od skipps a little at high speed otherwise runs fine at top speed no passing gear . i'm inclined to believe it's a sensor or elec problem

1 of 1 people found this helpful.
865

Computer on its way out

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