New guy with defrost trouble - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Old crumudgon · 12-04-2008, 10:18 AM

Hello guys, I have a 2000 Silverado that has a new issue that I have noticed since the weather turned cold. In previous years I could start the truck let it warm and defrost the windshield fairly quickly, now the defrost air never seems to get warm or as warm as the heater air. It will however somewhat work after the truck is driven, but I basically have no defroster.
I have replaced the thermostat and made sure the coolant is at the proper level and now kind of suspect a problem with a blend door, vacuum or electronics.
Anybody have any thoughts?

Rex

**truckdude239** · 12-05-2008, 11:15 PM

umm sounds liek a blend door problem to me but i'm not sure about how to find out

**truckdude239** · 12-06-2008, 10:38 AM

thought about it it could also be a heater control valve gone bad

RANDYC · 12-15-2008, 11:23 AM

Rex, where you able to solve your problem yet? I have a 2000 chev with same problem
Randy

12-04-2008, 10:18 AM	#1
Old crumudgon Registered User Join Date: Dec 2008 Location: Reno Nevada Posts: 2	New guy with defrost trouble Hello guys, I have a 2000 Silverado that has a new issue that I have noticed since the weather turned cold. In previous years I could start the truck let it warm and defrost the windshield fairly quickly, now the defrost air never seems to get warm or as warm as the heater air. It will however somewhat work after the truck is driven, but I basically have no defroster. I have replaced the thermostat and made sure the coolant is at the proper level and now kind of suspect a problem with a blend door, vacuum or electronics. Anybody have any thoughts? Rex

12-05-2008, 11:15 PM	#2
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,237	Re: New guy with defrost trouble umm sounds liek a blend door problem to me but i'm not sure about how to find out __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

12-06-2008, 10:38 AM	#3
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,237	Re: New guy with defrost trouble thought about it it could also be a heater control valve gone bad __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

12-15-2008, 11:23 AM	#4
RANDYC clay Join Date: Sep 2005 Location: central wisconsin Posts: 41	Re: New guy with defrost trouble Rex, where you able to solve your problem yet? I have a 2000 chev with same problem Randy



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