C 3500 Truck 2WD V8-379 6.2L DSL (1988)
Tape Player: All Technical Service Bulletins
Audio - Tape Deck Noise/Static/Pauses Between Songs
Group Ref.: Accessories
Bulletin No.: 369602
Date:
January, 1994
SUBJECT:
TAPE DECK NOISE/STATIC DURING PROGRAM PAUSES BETWEEN SONGS (REPOSITION CROSS VEHICLE WIRING HARNESS AWAY
FROM TAPE DECK)
MODELS:
1988-93 CHEVROLET AND GMC C/K 1, 2, 3 TRUCKS WITH RPO UM6 OR UX1 RADIO WITH REMOTE CASSETTE PLAYER
THIS BULLETIN IS BEING REVISED TO CORRECT THE LABOR OPERATION NUMBER. PREVIOUS DIVISIONAL PUBLICATION
NUMBERS WERE:
DIVISION
BULLETIN #
PUBLISH DATE
CHEVROLET
93-249-9
AUGUST 1993
GMC TRUCK
93-8A-92
JULY 1993
GM CANADA
93-10-225
SEPTEMBER 1993
CONDITION:
Some owners may comment on noise/static heard through the audio system during program pauses when using the cassette player.
CAUSE:
Electromagnetic interference emitted from the cross vehicle wiring harness and received by the magnetically sensitive pick up heads in the cassette
player.
CORRECTION:
The cross vehicle wiring harness is several inches longer than necessary to accommodate servicing requirements. In some instances, the slack allows the
harness to bunch up inside the cross vehicle conduit/guide coming very close to the bottom of the tape player directly above the harness (Figure 1).
This condition can be corrected by removing the glove box liner for access and pulling the harness taut or otherwise as far away from the tape player as
possible.
