TPS SPECIFICATIONS 1981-1985 SETTINGS

Model and Year 1981 THRU 1984

TO: ALL CHEVROLET DEALERS

Listed below are all Throttle Position Sensor (TPS) settings for 1981 thru 1984.

ENGINE-PRODUCED BY VIN VOLTS CONDITION ------------------ --------- ---------- 1981 ---- Buick 3.8L A .97V High step of fast idle cam Buick 3.8L Turbo "A" Car 1.30V High step of fast idle cam Buick 4.1L .56V Stopped at curb idle

Chevrolet 1.6L 9 . 41V Stopped at curb idle Chevrolet 2.8L X .51V Stopped at curb idle Chevrolet 3.8L K .41V ISC retracted at slow idle Chevrolet 4.4L .51V Stopped at curb idle Chevrolet 5.0L H .56V Stopped at curb idle Chevrolet 5.7L .56V Stopped at curb idle

Oldsmobile 5.0L Y .46V Stopped at curb idle

Pontiac 2.5L 5 .51V Stopped at curb idle

1982

Buick 3.8L Non-Turbo A .77V High step of fast idle cam

Chev. 1.6L Minimum System C .92V High step of fast idle cam (Fed) Chev. 1.6L Full Function C .40V Stopped at curb idle (Calif) Chev. 1.8L L4 G .26V ISC retracted at slow idle Chev. 2.8L V6 X,Z,1 .26V Stopped at curb idle Chev. 3.8L V6 .36V ISC retracted at slow idle Chev. All V8 H,7 .51V Stopped at curb idle

Oldsmobile 5.0L, 4.3L .46V Stopped at curb idle Pontiac 2.5L R,2 .525V Ign. on, engine off

1983

Buick 3.8L A .86V High step of fast idle cam Chevrolet 1.6L C .92v High step of fast idle cam Chevrolet 2.0L P .525V Curb idle Chevrolet 2.8L L,X,Z,1 .26V Curb idle solenoid retracted Chevrolet 3.8L 9 .36V ISC retracted (min. idle) Chevrolet 5.0L H,S,7 .51V Curb idle Oldsmobile 5.0L .46V ILC retracted Pontiac 2.5L R,2 * Curb idle

1984

Buick 3.8L A .46V Curb idle

Pontiac 2.5L R,2 * Curb idle

Chevrolet 2.0L P .525V Curb idle Chevrolet 5.0L G,H .48V Curb idle Chevrolet 3.8L .48V Curb idle Chevrolet 1.6L C .92V High step of fast idle cam Chevrolet 2.8L L,X,Z,1 .30V Throttle kicker retracted

*Non-Adjustable.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.