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.

This may not eliminate the noise 100 percent in every case, but it should (in every case) reduce the noise level significantly.

WARRANTY INFORMATION





For vehicles repaired under warranty, use (see illustration).