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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1026 (Engine Controls - 6.6L (Lb7) (Troubleshooting & Diagnosis) >> Troubleshooting >> Symptoms - Engine Controls >> Before Using This Section

Before Using This Section

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Before using this section, you should have performed the Diagnostic System Check-Engine Controls and determined that the following criteria:

  1. The control module and the malfunction indicator lamp (MIL) are operating correctly.
  2. There are no diagnostic trouble codes (DTCs) stored, or a DTC exists but without MIL.

Several of the following symptom procedures call for a careful visual and physical inspection. The visual and physical inspection is very important. The inspection can lead to correcting a problem without further inspection which may save valuable time.

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