Dye and Black Light Method
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Use the J 42220 and the J 28431-6 to isolate the leak point. Fluid dye and black light kits are also available from various tool manufacturers. All transmissions that are diagnosed, that require replacement due to leakage, must be diagnosed with the leak dye and black light method.
- Follow the manufacturer's instructions in order to determine the amount of dye to use.
- Detect the leak with the black light.
- Make the necessary repairs.