LOW OIL PRESSURE READING INCORRECT OIL PRESS. SENDER

VEHICLES AFFECTED: 1987 R/V, G,P AND 1988 C/K MODELS WITH LB4 (VIN CODE Z), L03 (VIN CODE H), L05 (VIN CODE K), L19 (VIN CODE N) TBI ENGINES

Some 1987 R/V, G, P and 1988 C/K models with 4.3L, 5.OL, 5.7L and 7.4L engines with throttle body injection may have a low oil pressure reading at the gage. This condition may be caused by an incorrect oil pressure sender being installed in production prior to the VIN breakpoints listed below.

If this condition is encountered, it can be repaired by using a new oil pressure sender, P/N 10069218. The new design sender can be identified by a "60" that is stamped on the hex drive portion of the sender. For installation instructions, refer to the service procedure in Section 8C of the appropriate service manual.

1987 R/V 1987 G VAN -------- ---------- FLINT LINE 1 GMC HF718914 LORDSTOWN GMC 513-772 CHEV HF368115 CHEV 143213

* LINE 2 GMC HF517180 SCARBOROUGH GMC 522145 CHEV HF136663 CHEV 145649

JANESVILLE GMC HJ515257 CHEV HF139069 1987 P CHASSIS

ST. LOUIS GMC HS515905 CHEV HS145384 DETROIT GMC H3503077 CHEV H3315178

1988 C/K

PONTIAC GMC JE501049 CHEV JE103403

FT WAYNE GMC JZ500361 CHEV JZ103371

OSHAWA GMC J1503576 CHEV J1110750

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.