1979 Chevy Silverado Heater core leaking

Tiny
WILSODON
  • MEMBER
  • 1979 CHEVROLET SILVERADO
Heater problem
1979 Chevy Silverado V8 Two Wheel Drive Automatic

How much trouble is it to replace the heater core in a 79 chevy pickup truck?
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Monday, March 8th, 2010 AT 11:03 PM

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Tiny
BLUELIGHTNIN6
  • EXPERT
1. Disconnect the negative battery cable.
2. Detach the heater hoses at the core tubes and drain the engine coolant. Plug the core tubes to prevent spillage.
3. Remove the nuts from the distributor air ducts in the engine compartment.
4. Remove the glove compartment and door.
5. Disconnect the Air-Defrost and Temperature door cables.
6. Remove the floor outlet and remove the defroster duct-to-heater distributor screw.
7. Remove the heater distributor-to-instrument panel screws. Pull the assembly rearward to gain access to the wiring harness and disconnect the wires attached to the unit.
8. Remove the heater distributor from the truck.
9. Remove the heater core retaining straps and remove the core from the truck.
10. Installation is the reverse of removal. Be sure that the core-to-core and case-to-dash panel sealer is intact. Fill the cooling system and check for leaks.
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Monday, March 8th, 2010 AT 11:15 PM

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