rob122

I had a problem after installing aftermarket speakers and an aftermarket head unit in my 05 cobalt LS coupe. After installing using the correct harness from crutchfield my dash does not work. The lights work but i have no gas gauge no tach no speedo and no milage. Does anyone know what I can do to fix this?

abstract

did you check all your fuses? maybe you blew something when you were hookin it up

Brian MP5T

^^ Werd, I was thinking that myself..

rob122

all fuses were fine. ABS light brake light and airbag light also stay on. blinkers work outside the car but not in the car. car starts and runs fine.

hardtocope

sounds like u damaged ur body control module.

Bandit2941

I read on here where someone else had the same problem and I believe it was because they wired it wrong. I think they tried to pull power from the GM LAN wire (which gives the stock radio the turn on command so that's were the confusion came from). When they wired it properly the problem went away. I would re-check all of your connections and remember that if you don't have a wire coming from the fuse box or elsewhere as your turn on signal you have it hooked up wrong.

Brian MP5T

Cool, Sounds like an easy and honest mistake could be the problem. Let us know.

hardtocope

u fix it??????????

Ern

ya the power to the gm lan is wrong, buddy of mine did that and my had lines all cross my DIC. He just disconnected it and used another and its fine now.

rob122

got it fixed i pinched a wire behind the radio and it shorted out and destroyed the onstrument cluster

hardtocope

that sucks.. how much was that to fix?

rob122

it only cost me $250 because i knew the people at the dealership so i cut a deal with them