Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Heater Core: Service and Repair
Without Air Conditioning
Front
Heater Blower Case - Exploded View
REMOVE OR DISCONNECT
1. Battery ground cable.
2. Heater hoses at the core tubes.
CAUTION: The heater core can be damaged near the tube attachment seams if force is applied on them. if the heater hoses do not come off, cut
the hoses forward of the core tubes. Cut the hose on core tubes to remove.
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Drain engine coolant into a clean pan.
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Plug the core tubes to prevent spillage.
3. Nuts from the distributor duct studs that project into the engine compartment.
4. Instrument panel compartment assembly.
5. Air defroster and temperature cables.
6. Floor outlet.
7. Screw that holds the defroster duct to the heater distributor.
8. Screws that hold the heater distributor to the dash panel.
^ Pull the assembly rearward to reach the wiring harness.
9. Wiring harness.
10. Heater distributor.
11. Core retaining clamps.
12. Core.
INSTALL OR CONNECT
1. Core.
2. Core retaining clamps.
3. Heater distributor.
4. Wiring harness.
5. Defrost duct to heater distributor.
6. Floor outlet.
7. Air defroster and temperature cables.
8. Instrument panel compartment.
