Mechanics

HEATER INOP CHEVROLET PICKUP

1988 GMC Other

Question for a 1988 Chevrolet 1/2 Pickup w/ AC.
25 Amp Heater Fuse blew today while selecting blower from high speed to low speed, Electronic Display/Control Panel will not illuminate/Inop. Replaced fuse blew instantly, Disconnected blower and A/c compressor and 25 Amp Fuse still blows.
Looking for possible componets which may be at fault.I would like to know location of blower relays and resistor. Any Help is appreciated.
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Skiase
February 11, 2006.



Problem Solved !
FYI
I found the relays and the resistor behind the glove box.
After disconnecting all the components to verify none of them at fault, I started checking the wiring. I found that several wires were shorted to ground in the main harness, behind the cassette deck bracket. There actually 6 wires chafed into the core of the wires and 2 pinched and shorted to ground.

Tiny
Skiase
Feb 12, 2006.