The ac on my 91 gmc 1 ton dually has been retro fitted and charged with R134a. It has worked well for the past year. Last week it quit. The truck has a digital display and the ac light started flashing, indicating that the system need to be serviced. I've had the system checked and it is still fully charged. I'm told that there is no power getting to the compressor and this could be a possible relay or fuse problem. How can I check this out, and where are the relays located. (The 25 amp fuse in the fuse block is good)
Jul 7, 2008 at 11:42 AM
