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Fuse: Customer Interest
A/C - Erratic HVAC Operation & Self Diagnostic Blinks

Group Ref.: HVAC

Bulletin No.: 361102

Date: February, 1994

SUBJECT:
BLOWN FUSE, ERRATIC HVAC OPERATION, AND SELF DIAGNOSTIC FEATURE BLINKS (INSULATE WIRES)

MODELS:
1994 AND PRIOR CHEVROLET AND GMC C/K TRUCKS

CONDITION:

Some owners may experience a blown fuse, erratic HVAC operation, or a blinking HVAC control head self diagnostic indicator.

CAUSE:

Two possible hard to find causes have been discovered for the above symptoms:

-

Six way I/P to HVAC connector terminals may short to the ashtray. The connector has slots to accommodate the terminal positive attachment locks
that allow metal to metal contact between the exposed terminals and the ashtray (Figure 1).

Power and Ground Distribution > Fuse > Component Information > Technical Service Bulletins > Customer Interest: > 361102 > Feb > 94 > A/C - Erratic HVAC Operation & Self Diagnostic Blinks

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