Re: My rear AC and Heat is not working in my 2001Suburban
Start by check all fuses, then check for power at rear blower.if fuses are good and you have power then may have bad blower,if no power and fuses are good then may have bad resistor. hope this helps good luck.
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rear a/c fan may have a seperate fuse or relay. The same A/C system cools both the rear and front, only the temperature controls and the fan are seperate.
We just had the same problem and the AC, rear defrost and recriculate switches stopped working as well. We shut the Suburban off and when we turned it on again the issue was resolved. It hasn't been an issue since.
I'm just a regular diy'er, no training. Had same problem, 2001 Suburban, front blew cool air when heating, rear heat warmed up nicely. After reading other posts on other boards, took off the the heater hose clamps (make sure you remember which is which) at the firewall. With low pressure garden hose flushed left inlet/outlet first till I got good flow, then the right side, and back to left. Reattached hoses, started and tested. Heat blows just fine. I can't think of anything that could be damaged by this, but check with someone who know something first before trying it on your vehicle, but it worked for me. So far so good.
If no air is blowing. The resistor is blown. If that is the case check your cabin air filters. When they are clogged or dirty that’s when the resistor blows. There are two cabin air filters in the same compartment change both.
check all power outlets for loose change or metal objects in the doubble check the rears. fuse should be located on drivers side fuse pannal on side of dash
sounds like a connection at or a bad front blower motor. it's mounted under the hood on the passenger side fire wall. it should have 1 plug going into a rubber like connector. thats your power wire and another going to ground.i think back in 2001 the power wire was purple in color.
good luck chris
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