Heater Core

[C_andy460]

Hey Guys, I have a 1997 Tahoe and it started leaking antifreeze on the passenger side floor. Anybody have instructions and pictures on how to change the heater core?
Thanks,
Andy
PS build date of truck is 12/96

 

[SunlitComet]

This is the procedure for a unit with a/c as well:

With Air Conditioning HEATER CORE

Remove or Disconnect

1. Engine coolant.
2. Instrument panel storage compartment.
3. Electrical connectors, as necessary.
4. Center floor air distribution duct.
5. Hinge pillar trim panels.
6. Blower motor cover.
7. Blower motor.
8. Steering column.
9. Roll instrument panel back.
10. Coolant recovery reservoir.
11. Heater hoses.

1. Screw on interior side of cowl, near the evaporator pipe (if equipped) while holding heater case to the cowl.

1. Four screws on the engine side of the cowl holding the heater case to the cowl.

1. Two nuts on the engine side of the cowl holding the heater case to the cowl.
2. Heater case.

• • It may be necessary to have an assistant when removing heater case.

1. Heater cover.

• • Remove seven screws that hold cover to the heater case.

1. Heater core from retainer.

Install or Connect

1. Heater core into retainer.

• • Install seven screws that hold heater cover to heater case.

1. Heater cover.

• • Make sure heater cover is properly sealed.

1. Heater case.

• • May be necessary to have an assistant when installing heater case.

1. Nuts.
2. Screws.

Tighten

• Screws on engine side of the cowl to 1.9 N.m (17 lb in) .
• uts to 2.8 N.m (25 lb in) .
• Screw on interior side of the cowl to 11 N.m (97 lb in) .

1. Heater hoses.
2. Coolant recovery reservoir.
3. Roll instrument panel forward.
4. Steering column.
5. Blower motor.
6. Blower motor cover.
7. Hinge pillar trim panels.
8. Center floor air distribution duct.
9. Electrical connectors, as necessary.
10. Instrument panel storage compartment.
11. Engine coolant.

• • Check the system for leaks.

 

[C_andy460]

Pictures

Thanks for the reply but I didn't get the pictures before they changed, can you repost the pictures?
Thanks,
Andy

 

[SunlitComet]

two different pictures shown multiples times.