I have a 1991gmc suburban that did have a 6.2 diesel but was stolen so insurance paid for a 1993 6.5 diesel from a Humvee. My problem is the glow plugs seem to have no power and I can't figure out why.
WarWagon, my AC system lost its charge. I added one more can to get me to 3 lbs 8 oz. It ran fine registering 40 psi on the low side and then the next day nothing. The valve with the plastic twist on cap for the high side on top of the compressor has UV dyed oil around the base. No other places show signs of leaks.
