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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1646 (Engine Control System & Fuel System - 4.8L, 5.3L, 6.0L, 6.2L - Troubleshooting And Diagnosis) >> Service Bay Test >> Test Procedure

Test Procedure

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If the Service Bay Test aborts or fails, a DTC will NOT be set.
  1. Install a scan tool.
  2. Select the Service Bay Test with the scan tool.
    3. WARNING: Refer to Road Test Warning .
  3. Follow the instructions on the scan tool.
    • If the test aborts, correct the condition for running the test, then retest.
    • If the test fails, repair the vehicle for the condition indicated by the failure message on the scan tool.
  4. Verify that the EVAP inspection/maintenance system status is set to YES.
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