1995 GMC Safari Heater Core replacement

Tiny
HOTHANDSTAN
  • MEMBER
  • 1995 GMC SAFARI
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 95,000 MILES
How do you get access and replace the heater core on a Safari with A/C. Just taking the engine cover off was a huge chore The Safari Van in not built for maintenance. Picked up heater core and six spark plugs, the Passenger side I was able to access from inside the Van however the driver side plugs had to access from under the van, the heater core looks impossibel to access from inside the van or outside hood.
thanks
Sunday, March 8th, 2009 AT 5:43 PM

1 Reply

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Hello

Replacement procedures are as follows:

REMOVAL:
The front heater core is located on the right side of the passenger compartment, under the dash.

Disconnect the negative battery terminal from the battery.
Place a catch pan under the radiator, open the drain cock and drain the coolant to a level below the heater core.
Remove the radiator overflow coolant bottle and the windshield washer fluid bottle.
In the engine compartment, remove the inlet/outlet hose clamps from the heater core. Remove and plug the heater hoses to prevent coolant spillage.
From inside the vehicle, remove the engine cover to provide extra room.
From under the dash, remove the lower right filler panel.
Remove the distributor duct, for extra room.
Remove the heater-to-cowl bolts and the heater assembly from the vehicle. In some instances this may not be necessary.
Separate the cover plate and the heater core from the heater assembly.

INSTALLATION:
Assemble the cover plate and the heater core to the heater assembly.
Install the heater-to-cowl bolts and the heater assembly in the vehicle, if the entire assembly was removed.
Install the distributor duct.
From under the dash, install the lower right filler panel.
From inside the vehicle, install the engine cover.
In the engine compartment, install the inlet/outlet hoses on the heater core tubes.
Install the radiator overflow coolant bottle and the windshield washer fluid bottle.
Refill the coolant to the proper level and check for leaks.
Connect the negative battery cable to the battery.
Start the engine and recheck for leaks after it has reached operating temperature.

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Monday, March 9th, 2009 AT 2:19 AM

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