2002 Buick Regal electric glitch

2002 BUICK REGAL
80,000 MILES • 6 CYL • FWD • AUTOMATIC
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TOM F.
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  • 3 POSTS
Once in a while when I start the engine, the heater fan, rear window defroster, air conditioner, and cruise control, won't work.

All other elec equipment works fine. Then after a few minutes, it all come back on and works normal.

I suspect a relay but, haven't been able to associate all the problem electrical devices to one relay.

I have had some luck, restarting the car a few times, and this sometimes brings back the non working items.

what do you think is wrong?
Apr 24, 2009 at 11:10 PM
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BUDDYCRAIGG
  • CERTIFIED EXPERT
  • 2,262 POSTS
those 3 items all get their power from an orange wire coming out of the ignition switch.

a red wire goes into the switch and branches off in two circuits, a brown wire and a orange wire.

next time it happens, try your wipers (which is on the brown wire) it they work, then i suspect the ignition switch is the problem.
Apr 26, 2009 at 5:00 PM