For 1990-2009 cars

# SMU - SEC. 6E - ENG. CONTROLS USE OF INJECTOR TEST ADAPTERS

#### SUBJECT: SERVICE MANUAL UPDATE - SECTION 6E - ENGINE CONTROLS USE OF INJECTOR TEST ADAPTERS (J 39021-70 AND J 39021-60) WHEN PERFORMING FUEL INJECTOR BALANCE TEST OR FUEL INJECTOR COIL TESTS

#### MODELS: 1993-96 BUICK CENTURY 1992-96 CHEVROLET BERETTA, CORSICA 1992-97 CHEVROLET CAVALIER 1993-96 OLDSMOBILE CIERA 1995-97 PONTIAC SUNFIRE

1994-97 CHEVROLET AND GMC S MODELS WITH 2.2L ENGINE (VIN 4 - RPO LN2)

THIS BULLETIN IS BEING ISSUED TO RECOMMEND THE FOLLOWING INFORMATION BE ADDED TO SECTION 6E OF THE APPROPRIATE SERVICE MANUALS:

WHEN PERFORMING THE FUEL INJECTOR BALANCE TEST OR THE FUEL INJECTOR COIL TESTS ON CARS WITH 2.2L ENGINES, USE J 39021-70 INJECTOR TEST ADAPTER WITH THE J 39021 FUEL INJECTOR TESTER.

WHEN PERFORMING THE FUEL INJECTOR BALANCE TEST OR THE FUEL INJECTOR COIL TESTS ON TRUCKS WITH THE 2.2L ENGINE, USE J 39021-60 INJECTOR TEST ADAPTOR WITH THE J 39021 FUEL INJECTOR TESTER.

PLEASE REVISE YOUR SERVICE MANUALS WITH THIS UPDATE.

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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.

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