Special Valve Connectors
WARNING: This page does not describe the selected car, but rather 125 other vehicles, including the 2003 Dodge Ram Van, 2002 Saturn Vue, 2002 Saturn SL2, 2002 Saturn SL1, and 2002 Saturn SL. However, it is still accessible from the selected car via links, so may be relevant.
On some General Motors models, thread size on high-side service valve (3/8" x 24 threads) is different from thread size on low-side service valve (7/16" x 20 threads). Special adapters are required to make this connection. See Fig 1. These adapters are available in 45-degree and 90-degree angles in addition to straight-fixed and flexible adapters.