I have a 1990 K5 that needs quite a bit of love. The problems are:
1. Took it to the dealership to find out why I have no air coming into the cab whatsoever from the a/c and heater cents. Mechanic said the blower and resistor were bad so I replaced both and still nothing.

2. When I floor it the truck bogs down and backfires which I'm sure is just timing but just making sure.

3. Just found this out today while I was taking my kids for a ride. When I give it gas it starts choking itself out then revs back up then goes back down and dies. Starts right back up and kept doing the same thing.

Any help is much appreciated