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1997 Chevy Truck replacing leaking heater cores

Tiny
UNCLE FLOYD
  • MEMBER
  • 1997 CHEVROLET TRUCK
  • V8
  • 2WD
  • AUTOMATIC
  • 168,000 MILES
Have replaced heater core twice in the last two months. Have run ground wire to core for electrolyst, but hear air in system even after letting it run for 20 minutes with the radiator cap off. Thlinking I need to change heater core manufucturer?
Friday, May 7th, 2010 AT 7:34 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
See I f you have air bleeds for the cooling system on the inlet or thermostat housing. If you do then leave cap on and bleed the air out while running. If it still does it replace the rad cap as it may be bad and it's a cheap fix.
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Saturday, May 8th, 2010 AT 8:45 PM

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