1991 Chevrolet Van Replaced Heater Core Well Switch On Lines Just Before Now

350,000 MILES
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ANONYMOUS
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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
Dec 17, 2012 at 8:48 PM
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DRCRANKNWRENCH
  • ✓Experienced 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
Dec 17, 2012 at 10:15 PM
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