Mechanics

CHEVY HOW TO CHANGE HEATER CORE

1999 Chevrolet Blazer

Heater problem
1999 Chevy Blazer 6 cyl Four Wheel Drive Automatic 173069 miles

I would like to know how to open the evaporator box on a 99 s10 blazer in order to change the heater core
Avatar
Tj Doporto
January 31, 2010.




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Bluelightnin6
Jan 31, 2010.
1999 Chevy Truck S10/T10 Blazer 4WD V6-4.3L VIN W

HEATER CORE REPLACEMENT

REMOVAL PROCEDURE


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1.Remove the heat/vent module. See: Housing Assembly HVAC\Service and Repair
2.Remove the heater core access cover screws.
3.Remove the heater core access cover.


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4.Remove the heater core from the heat/vent module.

INSTALLATION PROCEDURE


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1.Install the heater core in the heat/vent module.


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NOTE: Refer to Fastener Notice in Service Precautions.

2.Install the heater core access cover. TIGHTEN Tighten the heater core access cover screws to 1.9 Nm (17 lb in)
3.Install the heat/vent module. See: Housing Assembly HVAC\Service and Repair

Rasmataz
Jan 31, 2010.