I posted a thread in the general tech discussion and got no replies, so figured I try here. I bought a Stant 12270 pressure tester to help track down a coolant leak on my 04 gtp. The adapter needed to screw onto the filler neck, well... it doesn't screw on. Neither of the adapters (12032 & 12026) for Stant listed for use on GM vehicles will (I ordered mine off rockauto, but verified it was the "right" one on Stant's website).
Has anyone performed a pressure test or owns a pressure tester for these cars? What model is it and what adapter goes with it? Part numbers would be helpful. Thanks
