EXPERTEC TSB (91-8-19A)

Publication date: 1991-11-27
Reference number: 91-8-19A

EXPERTEC TSB

TECHNICAL SERVICE BULLETIN

Reference Number(s): 91-8-19A, Date of Issue: 11/27/91

OIL PRESSURE GAGE FLUTTER - MAY READ HIGH (REPLACE SENSOR)

Model(s): 1990-91 Pontiac 6000, Firebird, Sunbird, Grand Am, Grand Prix & Trans Sport Models

Bulletin No.: Pontiac 91-8-19A

Date: 11/27/1991

SUBJECT

OIL PRESSURE GAGE FLUTTERS, OR MAY READ HIGH (REPLACE SENSOR)

1990-91 6000, FIREBIRD, SUNBIRD, GRAND AM, GRAND PRIX AND TRANS SPORT MODELS

SERVICE INFORMATION

This bulletin is being revised to include Trans Sport models in the title of the bulletin. This bulletin cancels and replaces bulletin 91-8-19 issued 11/91. Please discard bulletin 91-8-19.

CONDITION

On vehicles with gages, the oil pressure gage may flutter, or may show unusually high oil pressure (full scale).

CAUSE

The internal resistance wire in the sensor may not be properly supported, resulting in an intermittent open condition.

SERVICE PROCEDURE

Check for normal causes of high oil pressure gage readings (high resistance or open circuit), such as a poor ground path caused by loose sensor mounting, oil cooler adapter loose, or poor electrical connections. If no cause can be found, replace the oil pressure sensor with the correct new part number from the attached chart.

WARRANTY INFORMATION

Use existing labor operation N2220.

PARTS INFORMATION

NEW OIL PRESSURE SENSOR PART NUMBERS 1990 - 1991 MODELS

Carline	Engine(s)	Engine VIN Codes	New P/N	Replaces
6000	LR8(90) LR8(91) LHO(90) LHO(91)	R R T T	10045775 10205676 10205410 10205676	Existing 10096200 10096199 10096200
Firebird	LHO L03/LB9/L98	T E, F, 8	10205410 10205411	1643535 10096207
Sunbird And Grand Am	exc. LD2/LGO LD2/LGO	K, M, T, U A, D	10191433 22578692	1647135 22542436
Grand Prix	LHO(90) LHO(91) LQ1 LD2	T T X D	10205410 10205676 10207183 22578692	10096199 10096200 10137630 22542436
Trans Sport	LG6(90) LG6(91)	D D	10205410 10205676	10096199 10096200

Parts are currently available from GMSPO.