Engine - Low Oil Pressure Reading
87chevy14CHEVROLET NUMBER: 88-T-08
SECTION: 6D - Engine Electrical
DATE: March, 1987
SUBJECT: LOW OIL PRESSURE READING
MODELS: 1987 R/V, G, P AND 1988 C/K 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, 5.0L, 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. 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. This condition was corrected in production beginning with the following VIN breakpoints:
1987 R/V
Flint
Line 1 GMC HF718914
Chevrolet HF368115
Line 2 GMC HF517180
Chevrolet HF136663
Janesville GMC HJ515257
Chevrolet HJ139069
St. Louis GMC HS515905
Chevrolet HS145384
1987 G Van
Lordstown GMC 513772
Chevrolet 143213
Scarborough GMC 509369
Chevrolet 119458
1987 P Chassis
Detroit GMC H3503077
Chevrolet H3315178
1988 C/K
Pontiac GMC JE501049
Chevrolet JE103403
Ft Wayne GMC JZ500361
Chevrolet JZ103371
Oshawa GMC J1503576
Chevrolet J1110750