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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1363 (Hybrid Controls - DTC B008A To DTC P0AF7) >> DTC P0AF7 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Review the Failure Records when the DTC set.
    • If the engine coolant temperature (ECT) was above 125°C (257°F) when the DTC set, go to Symptoms - Engine Cooling and correct that concern first.
  2. Operate the vehicle while monitoring the APM heat plate temperature with the scan tool.
  3. If the APM heat plate temperature is more than 100°C (212°F) proceed with Circuit/System Testing.
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