2000 silverado-no heat - The 1947 - Present Chevrolet & GMC Truck Message Board Network

truckeez · 11-13-2012, 05:16 PM

4.3 v6, what to look for?
The mechanism that makes the door close off routing air thru the heater core is not operating apparantly, how Do i get it happinin? Thanks

**ms2335** · 11-13-2012, 09:50 PM

Had a 93 Chevy 4.3 that would not heat. The heater core was stopped up and water was not passing through it. Backflushed the heater core and heat worked great

clinebarger · 11-13-2012, 11:13 PM

Check that both heater hoses are HOT.
Check for movement of the the Blend door actuator.

67ChevyRedneck · 11-16-2012, 12:25 AM

Quote:

Originally Posted by ms2335

Had a 93 Chevy 4.3 that would not heat. The heater core was stopped up and water was not passing through it. Backflushed the heater core and heat worked great

I had the same issue with my 2000 5.3L last year. I had no heat at all. I backflushed a turd of crap out of it.

11-13-2012, 05:16 PM	#1
truckeez Registered User Join Date: Feb 2010 Location: Cruzeville Posts: 219	2000 silverado-no heat 4.3 v6, what to look for? The mechanism that makes the door close off routing air thru the heater core is not operating apparantly, how Do i get it happinin? Thanks

11-13-2012, 09:50 PM	#2
ms2335 Senior Member Join Date: Jan 2009 Location: glenmora. la Posts: 290	Re: 2000 silverado-no heat Had a 93 Chevy 4.3 that would not heat. The heater core was stopped up and water was not passing through it. Backflushed the heater core and heat worked great __________________ 65 Chevy C10 Short Fleet BBW 6.0L/4l80E 68 Chevy C10 SWB 6.0L/4L80E 84 Chevy C10 SWB 5.3/4l60E QA1 Suspension

11-13-2012, 11:13 PM	#3
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: 2000 silverado-no heat Check that both heater hoses are HOT. Check for movement of the the Blend door actuator.



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