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.
Install the J 44152 on the transmission side of the AT 20-way inline connector. See Special Tools . Using the J 35616 measure the resistance between the TFT sensor signal circuit and the low reference circuit. Refer to Temperature Versus Resistance for the resistance values.
If the resistance is not within the specified range, replace the transmission wiring harness.