Operation CHARM: Car repair manuals for everyone.
Home >> GMC >> 1989 >> Jimmy Full Size V8-379 6.2L DSL >> Repair and Diagnosis >> Heating and Air Conditioning >> Heater Core >> Service and Repair >> With Air Conditioning
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With Air Conditioning



DEFROSTER DUCT AND HEATER CORE REPLACEMENT









Remove or Disconnect

1. Battery ground cable.
- Drain the radiator.
2. Heater hoses from the core tubes.
- Plug the core tubes to prevent spillage.
3. Instrument panel compartment and door.
4. Center duct from the defroster outlet duct.
5. Center lower air distributor and center air outlet ducts.
6. Temperature door cable.
7. Nuts from the three selector duct studs that project into the dash panel.
8. Defroster outlet duct-o-dash panel screw (inside the vehicle).
9. Defroster outlet duct assembly.
- Pull rearward until the core tubes clear the dash panel.
- Lower the defroster duct assembly to reach the vacuum and electrical harness.
10. Vacuum and electrical harness.
11. Core mounting strap screws and strap.
12. Core.









Install or Connect

1. Core.
2. Core mounting strap and strap screws.
3. Vacuum and electrical harnesses.
4. Defroster outlet duct assembly.
5. Temperature door cable.
6. Center lower air distributor and center air outlet ducts.
7. Center lower air distributor duct to defroster out let duct.
8. Instrument panel bar and door.
9. Heater hoses.
10. Coolant to the radiator.
11. Battery ground cable.

Adjust

Temperature door cable.
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