where do i find the air cindtioner ports on my 91 gmc jimmy?
air works well when driving down the freeway, but when get into town at lights heat comes out of the vents. I think it is a vacuum problem in the dash for the vent doors. how do you get the dash board off and how do ia check the vent door? 91 olds 98 regency elite.
Do I need Automotive Air Conditioning Repair