blower motor works, a/c works, but no heat??
blower motor works, a/c works, but no heat??
06 1ton 4X4 duramax/6speed ext.cab WT
Hummer wheels :^)
dual lift pump
Banks air intake
Does the engine seem like it is overheating?
Does the upper radiator hose get hot? Does the lower radiator hose at least get very warm?
Point being: Is your water pump moving any water?
The first sign I had that my pump had spun loose from its drive gear was that the heater wasn't blowing any heat. The second sign was that the engine temp got WAYY hot. The third sign was that the coolant started blowing out the overflow tube. What should've clued me in to its not being a head gasket problem was the lack of residual pressure in the cooling system after the engine cooled down.
then again, it could just be a bad heater hose valve...
engine temp is fine...
06 1ton 4X4 duramax/6speed ext.cab WT
Hummer wheels :^)
dual lift pump
Banks air intake
I had that problem on an 05 Chev 2500 HD Duramax and it was an easy fix but don't remember what the fix was. Try cycling through hot and cold.
Sounds like a stuck door?
Kennedy Diesel-owner
More than just a salesman-I use and test the products that I sell on a daily basis!
Superflow Lie Detector in house
2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
2005 Chev K3500SRW D/A CC Long LT(SOLD)
2007 Chev K2500 Classic EC Short LT (Sold)
2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
2016 GMC K3500SRW D/A CC short LTZ
Custom tuning in house using EFI Live tuning software!
i found the problem, right under the glove box latch is a plug, my brand new border collie has toys down on the floor under the glove box..the plug was unplugged...got heat now!!
06 1ton 4X4 duramax/6speed ext.cab WT
Hummer wheels :^)
dual lift pump
Banks air intake