2000 Chevy Silverado heater not working

Tiny
CARTER96
  • MEMBER
  • 2000 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 171,500 MILES
I have the correct amount, mix, and type coolant and my heater is still not working. I have noticed that of the two hoses going to the heater core only one is hot. Would this be a clog or a valve not opening?
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Sunday, January 20th, 2008 AT 9:11 AM

2 Replies

Tiny
BMRFIXIT
  • EXPERT
Try this
isolate the heater core and flush
do it twice
let me know
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Sunday, January 20th, 2008 AT 9:18 AM
Tiny
BMRFIXIT
  • EXPERT
From: carter96
To: BMRFIXIT
Posted: Sun Jan 20, 2008 4:22 am
Subject: heater core
never done that before more comfortable working on outboards but not completely dumb when it comes to vechicles. How would I go about isolating heater core and flushing? Thanks in advance

Engine cool
lower the coolant level
Locate the two hoses running to the heater core
disconnect them at the engine side leaving hoses connected to heater core throw the firewall
use garden water hose and compressed air if possible
run the water and follow by air throw one side and out the other and vice versa
do that two to three times watching what leaving the heater core you are looking for the go flow and clear water to run throw
good luck
let me know
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Sunday, January 20th, 2008 AT 9:36 AM

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