Circuit/System Verification
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Verify that the interior backlighting system operates normal. Refer to Interior Lighting Systems Description and Operation .
- Engine ON, press 1 on the PTO switch to engage PTO. The PTO LED indicator will turn on blinking at a 0.25 second interval rate when the PTO relay is energized. The indicator turns on solid once the PTO load feedback signal confirms the load has been engaged or after 3 seconds if load feedback is not utilized by the PTO system.