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01-03-2012, 11:38 AM #1
Truck won't blow heat down by floor
Hi everyone. Really digging this site, lots of helpful info. Hopefully someone can shed some light for me on this one.
I recently noticed that my '00 Silverado will not blow heat from the low vents down by your feet. Up top it is fine, nice and hot and strong. Down by the feet, nothing.
Thoughts?-2001 Suburban 2500 LT 8.1
-2000 Silverado 1500 LT Z71
Gone but not forgotten:
-2007 TrailBlazer SS
-2004 Cadillac CTS-V
-1998 Silverado 1500 LT Z71
-1989 Pontiac Formula WS6
01-03-2012, 07:03 PM #2
You might check all of your vacuum hoses to make sure they are connected and/or not cracked. I had a 2000 GMC astro van that did something similar with the AC blowing up out of the defrost, but not the vents/floor.06 Chevy Silverado V6 4.3 Reg Cab
71 Chevy Nova SS 350 SB
01-04-2012, 01:00 AM #3
- Join Date
- Nov 2011
- Shady Spring, WV
My Suburban was doing that last year and the blend doors were binding and had to be replaced. Also, one actuator was bad not working the blend door.
01-04-2012, 09:38 AM #4
01-05-2012, 08:57 AM #5
you can get to your blend door easily, it sits right above the transmission hump, just a couple screws and it will open it up and you can see what it is or isnt doing when you switch it to the floor vents. there is a gasket that helps it seal into its different positions, most of the time that had torn and is caught up in the door99 K1500 Suburban LT "THE BEAST"
Hypertech III, K&N, true dual
01-05-2012, 09:27 AM #6
01-05-2012, 08:08 PM #7
I have a friend with a 2008 K2500 that just got his blend door problem fixed for the 2nd time. Also his fan would only run on high so it took a resistor/relay worth about $300 to get it working right. $575 total to get it fixed at a GM dealership.
01-07-2012, 12:40 PM #8
01-07-2012, 05:30 PM #9
01-07-2012, 06:03 PM #10
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