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C 30 1 Ton Pickup 2WD V8-454 7.4L VIN W 4-bbl (1983)

Heating and Air Conditioning > Blower Motor > Component Information > Technical Service Bulletins > Customer Interest: > 85167 > Dec > 85 > Interior - Wind Whistling Noise From Vent Window

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Blower Motor: Customer Interest
Interior - Wind Whistling Noise From Vent Window

85-167
10
DEC.., 1985
Subject:

WIND WHISTLE IN CAB WITH BLOWER ON "HIGH"

Model and Year:
1983-85 C/K TRUCKS WITH SILVERADO TRIM (RPOYE9)
TO:

ALL CHEVROLET DEALERS

ILLUSTRATION

Some C/K Silverado Trucks may exhibit a wind whistling noise in the area of the vent window or the side door glass lower seal when the HVAC blower
is on "high".

This condition is the result of a restriction in air flow from the cab interior to the outside environment. The following procedure will improve the air flow
and eliminate the whistle.

Heating and Air Conditioning > Blower Motor > Component Information > Technical Service Bulletins > Customer Interest: > 85167 > Dec > 85 > Interior - Wind Whistling Noise From Vent Window

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