electrical problems

electrical problems

Postby briannaomi [OP] » October 4th 2009, 3:08am

I have a 2000 chevrolet astro awd and when I turned the heater control switch from off to any other position I would immediately lose power to my fuel gauge, temperature gauge, front blower, rear blower, rear defroster and overhead display for mileage, temperature, etc. as well as my digital odometer. It used to kick back on after a while once I turned it back to the off position, stay on for a while and then kick back off. It would always kick off instantly whenever I changed the heater control from the off position. What should I be looking for here? Any ideas?
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briannaomi
Fueling (Empty tank)
Fueling (Empty tank)
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Re: electrical problems

Postby Matrixx » October 4th 2009, 9:03am

This sounds like a short in the switch itself. Pull the assembly out from the console and check the back of it for any burn marks and current draw with a meter. This would be the first place I would check, then work out from their. The heater motor can also draw a heavy amount of power if it's seized or worn but check the switch first as mentioned. Let us know how things are going, Thanks.:)
96-GMC Safari - Rwd - Original Transmission - Exhaust - Air Cared - 3.73 Limited Slip Rear End - Motor Replaced - 91 octane (Chevron) for the last 14 years - MFI Upgrade - 640,000 Kilometers.
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AstroSafari Pioneer
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Firing on 6 Cylinders (L3)
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Re: electrical problems

Postby 8fox » July 2nd 2015, 4:28am

Hi, I had a similar problem in my 2001. All of those circuits run through the ignition switch. I tore apart my whole dash looking for a short or disconnected wire. Took it to a shop and they traced to the Ignition switch.
Hope this helps.
8fox
Fueling (Empty tank)
Fueling (Empty tank)
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