Circuit/System Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Verify none of the following conditions exist:
P0506
- Restricted exhaust
- Mechanical conditions that limits engine speed
- Parasitic load on the engine-For example, a transmission condition, a belt driven accessory condition.
- If a condition is found, repair as necessary.
P0507
- Vacuum leaks
- A throttle valve that does not close correctly
- Verify the correct operation of the crankcase ventilation system. Inspect for the following conditions:
- The routing of the positive crankcase ventilation (PCV) system
- Vacuum leaks in the PCV system-Refer to Crankcase Ventilation System Inspection/Diagnosis
- If a condition is found, repair as necessary.