For 1990-2009 cars

# TPS SETTINGS INFORMATION

#### VEHICLES AFFECTED: All 1981-1984 Models With Gasoline Engines

Listed below are Throttle Position Sensor (TPS) settings for 1981 through 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 3.8L Turbo 'E' Car 1.12V High step of fast idle cam Buick 4.1L .56V Stopped at curb idle

Chev. 1.6L 9 .41V Stopped at curb idle Chev. 2.8L X .51V Stopped at curb idle Chev. 3.8L K .41V ISC retracted at slow idle Chev. 4.4L .51V Stopped at curb idle Chev. 5.0L H .56V Stopped at curb idle Chev. 5.7L .56V Stopped at curb idle Olds. 5.0L Y .46V Stopped at curb idle

Pont. 2.5L 5 .51V Stopped at curb idle Pont. 4.3L S .41V ISC retracted at slow idle Pont. 4.9 Turbo T .40V ISC retracted at slow idle Pont. 4.9L Non-Turbo with ESC W 1.0V At 2000 RPM Pont. 4.9L Without ESC Z .35V ISC retracted at slow idle

#### 1982

Buick 3.0L .52V ISC retracted at slow idle Buick 3.8L Non-Turbo A .77V High stop of fast idle cam Buick 3.0L Turbo 'G' Car 1.28V High stop of fast idle cam Buick 3.0L Turbo 'E' Car 1.28V High stop of fast idle cam Buick 4.1L 4 .97V High stop of fast idle cam Chev. 1.6L Minimum system C .92V High stop 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 V-6 X,Z,1 .26V Stopped at curb idle Chev. 3.8L V-6 .36V ISC retracted at slow idle Chev. All V-8 H,7 .51V Stopped at curb idle

Olds. 5.0L, 4.3L .46V Stopped at curb idle

Pont. 1.8L O Curb idle Pont. 2.5L R,2 .525V Ign. On, Engine Off

#### 1983

Buick 3.8L A .86V High step of fast idle cam Buick 3.8L Turbo 1.28V High step of fast idle cam Buick 3.0L .51V ISC retracted (min. idle) Buick 4.1L .97V High step of fast idle cam Chev. 1.6L C .92V High step of fast idle cam Chev. 2.0L P .525V Curb idle Chev. 2.8L L,X,Z,1 .26V Curb idle solenoid retracted Chev. 3.8L 9 .36V ISC retracted (min. idle) Chev. 5.0L H,S,7 .51V Curb idle

Olds. 5.0L .46V ILC retracted Pont. 1.8L 0 Curb idle Pont. 2.5L R,2 Curb idle

#### 1984

Buick 3.8L A .46V Curb idle Buick 4.1L .56V Curb idle Pont. 1.8L O,J * Curb idle Pont. 2.5L R,2 * Curb idle Chev. 2.0L P .525V Curb idle Chev. 5.0L G,H .48V Curb idle Chev. 3.8L .48V Curb idle Chev. 1.6L C .92V High step of fast idle cam Chev. 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.