Component Testing

WARNING: This page is about a different car, the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Using the J 35616 , connect a test lamp between battery positive voltage and any of the TR signal circuits at the PNP switch. Referring to Transmission Range Switch Logic will ensure that the test lamp illuminates when the TR signal circuit that is being tested is grounded.

If the test lamp does not illuminate when the circuit is grounded, replace the PNP switch.