1999 Chevy Blazer heater core removal

  • 19 POSTS

Heater problem
1999 Chevy Blazer 6 cyl Two Wheel Drive Automatic

im having trouble figuring the easiest way to go about removal of the heater core. Any tips? Cant get a chiltons right now.

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Sunday, August 30th, 2009 AT 7:43 AM

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  • 19,434 POSTS

Removal & Installation ("C" & "K" Series)
Disable air bag system.
Disconnect negative battery cable.
Remove glove box by squeezing sides together. Remove 2 instrument panel retaining bolts from glove box opening.
Remove center floor duct.
Remove center support bolt.
Remove Electronic Control Module (ECM) and tray. Remove both kick panels.
Remove blower motor cover and blower motor.
Remove driver's lower instrument panel cover and knee bolster.
Lower steering column.
Remove instrument panel left and right pivot bolts located at lower corners of instrument panel. Remove 3 screws from defrost vent, near windshield. Disconnect any connectors and tilt instrument panel back far enough to access heater case.
Remove coolant recovery reservoir from engine compartment.
Drain engine coolant. Disconnect heater hoses at core.
Remove bolts and nuts from engine compartment attaching heater case to vehicle.
Remove heater case.
Remove 7 screws attaching heater case cover plate. Remove screws and bracket attaching core to case. Remove heater core.
To install, reverse removal procedure.
Replace any seals.
Fill cooling system. Start engine and check for leaks.

Removal & Installation ("S" & "T" Series)
Disconnect negative battery cable.
Drain engine coolant.
Disconnect heater hoses at core.
Remove instrument panel. .
Remove air inlet assembly.
Disconnect vacuum lines to heater case components. Remove heater case retaining studs from engine compartment. Disconnect blower motor resistor. Remove heater case. Remove heater core access cover from top of heater case. Remove heater core. Remove seals. To install, reverse removal procedure. Fill cooling system. Replace old seals with new seals. Start engine and check for leaks.



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Sunday, August 30th, 2009 AT 8:07 AM

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