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I have a 2000 Grand am gt and I'm having it throw some

Customer Question
Hi I have a...

Hi I have a 2000 Grand am gt and I'm having it throw some lights on the dash ONLY when I turn the fan on on the climate control. No codes appear when I scan the vehicle tho.

Mechanic's Assistant: Have you checked the fuses? The dashboard bulbs?

The lights that are illuminated at the trak off, service vehicle soon and abs

Mechanic's Assistant: Are you fixing your Grand Am yourself? What have you tried so far?

I was thinking since the climate control is working under vacuum it's pulling too much to run the motor without issue. Fuses are all good.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

The car was in pretty bad shape when I got it's there's a possibility there's a hackjob of wiring or missing relays/fuses.

Submitted: 7 months ago.Category: Pontiac
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Answered in 13 minutes by:
1/11/2018
Pontiac Mechanic: Pete, Mechanic replied 7 months ago
Pete
Pete, Mechanic
Category: Pontiac
Satisfied Customers: 139
Experience: Ase Master Tech
Verified

The most common problem with the older GMs was the ignition switch. When they go bad all kinds of odd electrical problems show up. The blower motor, acting irratically, is good sign that the ign switch is going bad. If someone was in there hacking wires you might have a project on your hands.

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Customer reply replied 7 months ago
I believe whoever worked on it before cut wires to rip the dash out. I think I have anything connected again with butt connectors. Anyway, I noticed the color coded lines for the blender doors were crossed but nothing other than that.
Customer reply replied 7 months ago
you're saying the ignition switch can make all those lights turn on when I turn on the heater/ac fan? That's most likely the culprit?
Customer reply replied 7 months ago
It definitely feels like a rough idle once the lights show up so I was thinking that vacuum had something to do with it since the climate control is vacuum operated.
Pontiac Mechanic: Pete, Mechanic replied 7 months ago

That is where I would start. I did a lot of them in the past for some of the problems you are having now.

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Pontiac Mechanic: Pete, Mechanic replied 7 months ago

You can block off the vacuum feed hose to see if that is your idle problem.

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Customer reply replied 7 months ago
I'll start there and see where we end up . Thank you.
Pontiac Mechanic: Pete, Mechanic replied 7 months ago

Good luck with it.

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