I replaced the heater core as well as the switch.

Tiny
ANONYMOUS
  • MEMBER
  • 1991 CHEVROLET VAN
  • 350,000 MILES
I replaced the heater core as well as the switch on the lines just before the heater core and now it is blowing no or little heat
Tuesday, December 18th, 2012 AT 4:48 AM

1 Reply

Tiny
DRCRANKNWRENCH
  • MECHANIC
  • 3,380 POSTS
You might have air in the system. To bleed air out of a coolant system do the following;
Remove the radiator cap once truck is cool
Turn heater temperature all the way to hottest setting
Start truck and allow to reach operating temperature
Top off the radiator and reserviour and replace the cap
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Tuesday, December 18th, 2012 AT 6:15 AM

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