gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Fuel Injector|Service and Repair > < Fuel Injector Diagnosis (w/J 39021 or Tech 2)|Page 11036
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6. View the test results.

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If any injector exceeds the recommended tolerance, replace the injector(s), E-85 only. All other engine, refer to Fuel Injector Cleaning.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.  See: Computers and Control Systems/Testing and
Inspection/Diagnostic Trouble Code Tests and Associated Procedures/Verification Tests and Procedures

Fuel Injector Replacement

Fuel Injector|Service and Repair > < Fuel Injector Diagnosis (w/J 39021 or Tech 2)|Page 11036