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ABS light, parking brake light, and no heat or fan -- HELP


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thcguy12
New User

Jan 5, 2020, 8:08 PM

Post #1 of 2 (311 views)
ABS light, parking brake light, and no heat or fan -- HELP Sign In

08 GMC envoy. 4.2L
95000 miles RWD
Weird car issue:

Today I went out to go somewhere and my GMC envoy had multiple warning lights on. ABS, parking brake, and traction stabilty control lights all on + the heater would blow nothing but cold air. Heater would not change zones, fan speed, temp. Just cold air blowing. Car drives fine. Engine is warm. Seems bad.

I was driving home and hit bump going into neighborhood - all the warning lights went off and heat started blowing hot.

WHAT DO YOU THINK MY ISSUE IS?

Tried to check wiring on battery and ground. Seems fine.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 5, 2020, 8:39 PM

Post #2 of 2 (307 views)
Re: ABS light, parking brake light, and no heat or fan -- HELP Sign In

Probably a bad power source or ground connection somewhere. Go over all the grounds and power connection near the battery and fuse box. Jiggle the wires and watch for a response.



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