GMC Workshop Service and Repair Manuals

Throttle Position Sensor: Technical Service Bulletins
Throttle Position Sensor - Specifications

84-235
6C (VI)
Feb., 1985
Subject:

TPS SETTINGS - ALL GASOLINE ENGINES

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

ENGINE-PRODUCED BY

VIN

VOLTS

CONDITION

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

 

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