1994 Chevy Silverado heater core replacement

Tiny
PAULADAMS1954
  • MEMBER
  • 1994 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
Do you have any tips on replacing the heater core? Thank you, Paul
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Monday, October 4th, 2010 AT 7:11 AM

4 Replies

Tiny
WRENCHTECH
  • EXPERT
Does your truck have air conditioning?
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Monday, October 4th, 2010 AT 7:31 AM
Tiny
PAULADAMS1954
  • MEMBER
Yes
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Monday, October 4th, 2010 AT 11:12 AM
Tiny
WRENCHTECH
  • EXPERT
REMOVE OR DISCONNECT

1. Engine coolant.
2. Instrument panel compartment.
3. Electrical connectors, as necessary.
4. Center floor air distribution duct.
5. ECM and mounting tray.
6. Hinge pillar trim panels.
7. Blower motor cover.
8. Blower motor (16).
9. Steering wheel.
10. Tilt back instrument panel.
11. Coolant recovery reservoir.
12. Heater hoses.
13. Screw (24).
14. Screws ( 18 ).
15. Nuts (19).
16. Heater case (17).

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

17. Heater cover (25).

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

18. Heater core from retainer.

INSTALL OR CONNECT

1. Heater core into retainer.
2. Heater cover (25).

CAUTION: Make sure heater cover is properly sealed.

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

3. Heater case (17).

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

4. Nuts (19).
5. Screws ( 18 ).
6. Screw (24).

Tighten

* Screws ( 18 ) to 1.9 Nm (17 in. Lbs.).
* Nuts (19) to 2.8 Nm (25 in. Lbs.).
* Screw (24) to 11 Nm (97 in. Lbs.).

7. Heater hoses.
8. Coolant recovery reservoir.
9. Instrument panel.
10. Steering wheel.
11. Blower motor (16).
12. Blower motor cover.
13. Hinge pillar trim panels.
14. ECM and mounting tray.
15. Center floor air distribution duct.
16. Electrical connectors, as necessary.
17. Instrument panel compartment.
18. Engine coolant.

O Check the system for leaks.
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Monday, October 4th, 2010 AT 11:35 AM
Tiny
PAULADAMS1954
  • MEMBER
Thank you.
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Monday, October 4th, 2010 AT 11:54 AM

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