system is freezing...pressure cycling switch on the accumulatorSomeone on HB's posted the GM bulletin on this GM truck AC problem:
After a few hours, the A/C blows less air, and warmer air.
Parking the truck for about 30 minutes, the a/c will work again for a few hours, then the problem repeats itself.
The bulletin was a 3 pager with several items in the system that had to be upgraded to correct it.
My freon pressure and switches are fine,, the AC works great for 2 hours then the low, warm air flow mulligan shows it's ugly head again.
If anyone has the bulletin number or the bulletin would sure appreciate the info.
This problem has finally jumped us.
Our GM dealers here can't seem to find it the info.