This is in regard to a 2000 Chevrolet Silverado 1500 with the 4.8L engine. This is the basic model, sold to fleet customers. It has approximately 209,000 miles on it.
The problem is that no matter what position I set the temperature or output vent dials, all I get is maximum heat out of the two vents on the side of the dash (facing toward the doors). Even if I turn the A/C on, it makes no difference. The A/C system has refrigerant, and the compressor runs, but no cold air.
I have read online about a “blend door actuator” repair, but could not locate any decent instructions. I have a Haynes book, and it does not have any instructions for this repair. Any advice, or link to a website or discussion board with good instructions for this repair would be appreciated.