S10/T10 P/U 2WD V6-262 4.3L (1988)
Dashboard / Instrument Panel: All Technical Service Bulletins
Interior - Tapping Noise In Corner of Dash
Number:
89-101-10
Section:
10
Date:
MARCH, 1989
Subject:
TAPPING NOISE IN CORNER OF DASH
Model and Year:
1987-89 S/T TRUCKS
TO:
ALL CHEVROLET DEALERS
Some 1987-89 S/T Trucks may experience a noise from the cowl area located around either of the front dash speakers. The noise has been described as a
tapping or creaking noise similar to tapping a pencil lead on the windshield.
This condition occurs primarily at ambient temperatures below 45 degrees Fahrenheit. Therefore, vehicles which sit inside a heated facility during repair
should be "cold soaked" prior to verifying the repair.
Repair Procedure
Apply repair procedure exactly as described in Chevrolet Bulletin 86-58 (Section 10) dated April, 1986, which has been reproduced in this bulletin for
your convenience.
IMPORTANT:
Windshield replacement will not resolve the situation.
For repairs to vehicles under warranty, use:
Labor Op:
T7230
1983-86 Models -
Labor Time:
.6 Hr per side
1987-89 Models -
Labor Time:
.8 Hr. per side
NOTE:
On 87-89 vehicles, the location of the one inch hole will encompass a small weld. Additional time has been added to the labor operation to
take this into account. Be sure to cut through only the first layer of sheet metal as specified in Step 9 on the bulletin.
IMPORTANT:
Dealers who have vehicles that are not repaired by this procedure should contact Technical Assistance for further assistance.
Subject:
COWL POPPING NOISE
Model and Year:
1983-86 S/T TRUCKS
Number:
86-58
Section:
10
Date:
APR., 1986
TO:
ALL CHEVROLET DEALERS
On some S/T Trucks operating in low ambient temperatures, a condition may exist where a snapping or "popping" noise is heard coming from the cowl.
This noise is caused by an "oil can" effect between the windshield frame and the door frame. The service procedure for eliminating the noise is as
follows:
1.
Remove the windshield wipers and radio antenna.
