K 3500 Truck 4WD V8-350 5.7L (1993)
Technical Service Bulletin # 93C03
Date: 921106
Campaign - Engine Oil/Filter Replacement
NUMBER:
93-C-03
DATE:
NOVEMBER 6, 1992
GROUP:
6A - ENGINE MECHANICAL
SUBJECT:
ENGINE OIL/FILTER REPLACEMENT
MODELS:
1993 C/K TRUCKS (BELOW 8500 GVW) AND G VANS (BELOW 8500 GVW) WITH FLINT BUILT 5.0L (L03) OR 5.7L (L05) ENGINES (VIN
CODE H & K)
GENERAL MOTORS HAS DETERMINED THAT CERTAIN 5.0L (L03) AND 5.7L (L05) ENGINES FROM THE FLINT V8 ENGINE PLANT
HAVE ENGINE OIL MIXTURES THAT DO NOT MEET THE 5W-30 REQUIRED FUEL ECONOMY IMPROVEMENT FACTOR
SPECIFICATION.
TO CORRECT THIS CONDITION DEALERS ARE TO CHANGE THE OIL AND REPLACE THE OIL FILTER ON AFFECTED VEHICLES
PRIOR TO DELIVERY.
Vehicles Involved
INVOLVED ARE CERTAIN 1993 C/K TRUCKS AND G VANS EQUIPPED WITH 5.0L OR 5.7L ENGINES AND BUILT WITHIN THE VIN
BREAKPOINTS.
THE SPECIFIC VEHICLES INVOLVED IN THIS CAMPAIGN HAVE BEEN IDENTIFIED BY VEHICLE IDENTIFICATION NUMBER
COMPUTER LISTINGS. THESE LISTINGS WILL BE MAILED TO ALL INVOLVED DEALERS WITH A PAPER COPY OF THIS MESSAGE IN
APPROXIMATELY 1-2 WEEKS.
NOTICE:
PRIOR TO RECEIVING THE SPECIFIC VEHICLE LISTING, DEALERS MAY WISH TO CHANGE THE OIL AND FILTER ON AFFECTED
VEHICLES. TO ACCOMPLISH THIS, THE TABLE OF INVOLVED VEHICLES AS LISTED BELOW MUST BE USED IN SOME
VEHICLE/VEHICLE PLANT CATEGORIES. A CHECK OF THE ENGINE STAMP ON THE FRONT RIGHT SIDE OF ENGINE BLOCK MUST
BE DONE TO VERIFY WHETHER THE ENGINE IS FROM FLINT OR ST. CATHARINES ENGINE PLANT. ONLY ENGINES FROM FLINT
IDENTIFIED BY THE LETTER "V" IN THE FIRST POSITION OF THE STAMP REQUIRE THE OIL AND OIL FILTER CHANGE.
VEHICLE ASSEMBLY PLANT VIN NUMBER J:
1993 C/K TRUCK WITH L05, AND LESS THAN GVW 8500 LB. PJ700144 THROUGH VIN PJ711984 (GMC) NO ENGINE BLOCK STAMP
CHECK REQUIRED
VEHICLE ASSEMBLY PLANT VIN NUMBER 1:
1993 C/K TRUCKS WITH L05 + MG5 + NA5/NA6 - NM8, AND LESS THAN GVW 8500 LB. BEGINNING VIN P1504602 THROUGH VIN
P1516615 (GMC) NO ENGINE BLOCK STAMP CHECK REQUIRED
VEHICLE ASSEMBLY PLANT VIN NUMBER E:
1993 C/K TRUCKS WITH L03 OR L05, AND LESS THAN GVW 8500 LB. PE502898 THROUGH VIN PE515488 (GMC) VERIFY ENGINE
BLOCK STAMP FOR LETTER "V" PRIOR TO CHANGING OIL AND FILTER