Diagnostic Aids
- Monitoring Fuel Injector circuit status with scan tool, while moving fuel injector harness, may help isolate an intermittent condition.
- Performing Fuel Injector Coil test may help isolate an intermittent condition. See FUEL INJECTOR COIL TEST .
- For an intermittent condition, go to INTERMITTENTS in TROUBLE SHOOTING - NO CODES - 4.2L BRAVADA, ENVOY, ENVOY XL, TRAILBLAZER & TRAILBLAZER EXT article.