97 Blazer 2door 2wd 4.3L 6 Auto 130k miles
I thought it had a problem with the gas charge or something.
One knob has Max A/C, A/C, the A/C to dash and feet, then vent (outide
air to dash, then defrost.
In all but the max a/c position I get good cold air out the
appropriate ducts. In max a/c the air flow is slightly reduced
compared to a/c, which is not how it used to work. The air coming out
is 20 degrees warmer than the a/c position (whch I think cools outside
air, whereas max a/c is supposed to recirculate).
Well, at least on a/c I get cold air. In max a/c the compressor does
ocome on normally.
Thoughts? Maybe it's time to bite the bullet and get that service
manual (from Chevy, I understand the after-market ones ones are not
good on accessory non-drivetrain things.???)
Did a quick look on the passenger side for obvious cracked/ brittle
vacuum lines and so far did not find any. One poster noted there may
be some under the battery - will check there, also.