Air Intake Duct - Installation Precaution

File In Section: 6E - Engine Fuel & Emission

Bulletin No.: 57-65-02

Date: March, 1995

SUBJECT:
Air Intake Duct Installation

MODELS:
1994-95 Buick Roadmaster
1994-95 Cadillac Fleetwood
1994-95 Chevrolet Corvette, Caprice, Camaro
1994-95 Pontiac Firebird
with 4.3L and 5.7L Engines (VINs W, P - RPOs L99, LT1) and 4L6O-E/Manual Transmission (RPOs MM6/ML9)

When servicing the air duct assembly, care must be taken when installing the air duct to the throttle body. It may be possible to fold the lower lip of the air duct as it is slid over the throttle body causing unmetered, nonfiltered air to enter the intake manifold. This condition could cause an MIL to set or a customer driveability concern.

When installing the air duct assembly to the throttle body, lubricate the air duct with a soapy water solution.

NOTE:
DO NOT use any type of silicone solutions. They can cause contamination to the oxygen sensors.

After the air duct is installed, visually inspect the air duct to be sure it is properly sealed around the throttle body.