Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2000C TAHOE 2WD V8-5.7L VIN RREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGHEATER CORESERVICE AND REPAIR
2000 Chevrolet C Tahoe 2WD V8-5.7L VIN R
Heater Core: Service and Repair
2000 Chevrolet C Tahoe 2WD V8-5.7L VIN RSECTION Service and Repair
HEATER CORE REPLACEMENT
REMOVAL PROCEDURE
1. Drain the coolant. Refer to Draining and Filling Cooling System in Cooling System.
2. Remove the instrument panel storage compartment.
3. Disconnect the electrical connectors, as necessary.
4. Remove the center floor air distribution duct.
5. Remove the hinge pillar trim panels.
6. Remove the blower motor cover.
7. Remove the blower motor.
8. Remove the steering column.
9. Roll back the instrument panel. Refer to IP Assembly - Rotating in Instrument Panel, Gauges and Warning Indicators.
10. Remove the coolant recovery reservoir.
11. Remove the heater hoses.
12. While holding the heater case to the cowl, remove the screw on the interior side of the cowl, near the evaporator pipe, if equipped.
13. On the engine side of the cowl, remove the 4 screws that hold the heater case to the cowl.
14. On the engine side of the cowl, remove the 2 nuts that hold the heater case to the cowl.
15. Remove the heater case.
Ask an assistant for help, if necessary.
16. Remove the 7 screws that hold the heater cover to the heater case.
17. Remove the heater cover.
18. Remove the heater core from the retainer.
INSTALLATION PROCEDURE
1. Install the heater core into the retainer.
2. Install the 7 screws that hold the heater cover to the heater case. Replace the seals.
3. Install the heater cover.
Verify that the heater cover is properly sealed.
4. Install the heater case.
If necessary, ask an assistant for help.
5. On the engine side of the cowl, install the nuts that hold the heater case to the cowl.
6. On the engine side of the cowl, install the 4 screws that hold the heater case to the cowl.
7. On the interior side of the cowl, install the screw.
NOTE: Refer to Fastener Notice in Service Precautions.
8. Tighten the following fasteners:
Tighten
- Tighten the screws on the engine side of the cowl to 1.9 N.m (17 lb in).
- Tighten the two nuts to 2.8 N.m (25 lb in).
- Tighten the screw on the interior side of the cowl to 11 N.m (97 lb in).
9. Install the heater hoses.
10. Install the coolant recovery reservoir.
11. Roll forward the instrument panel. Refer to IP Assembly - Rotating in Instrument Panel, Gauges and Warning Indicators.
12. Install the steering column.
13. Install the blower motor.
14. Install the blower motor cover.
15. Install the hinge pillar trim panels.
16. Install the center floor air distribution duct.
17. Connect the electrical connectors, as necessary.
18. Install the instrument panel storage compartment.
19. Add the engine coolant. Refer to Draining and Filling Cooling System in Cooling System.
20. Inspect the system for leaks.
REMOVAL PROCEDURE
1. Drain the coolant. Refer to Draining and Filling Cooling System in Cooling System.
2. Remove the instrument panel storage compartment.
3. Disconnect the electrical connectors, as necessary.
4. Remove the center floor air distribution duct.
5. Remove the hinge pillar trim panels.
6. Remove the blower motor cover.
7. Remove the blower motor.
8. Remove the steering column.
9. Roll back the instrument panel. Refer to IP Assembly - Rotating in Instrument Panel, Gauges and Warning Indicators.
10. Remove the coolant recovery reservoir.
11. Remove the heater hoses.
12. While holding the heater case to the cowl, remove the screw on the interior side of the cowl, near the evaporator pipe, if equipped.
13. On the engine side of the cowl, remove the 4 screws that hold the heater case to the cowl.
14. On the engine side of the cowl, remove the 2 nuts that hold the heater case to the cowl.
15. Remove the heater case.
Ask an assistant for help, if necessary.
16. Remove the 7 screws that hold the heater cover to the heater case.
17. Remove the heater cover.
18. Remove the heater core from the retainer.
INSTALLATION PROCEDURE
1. Install the heater core into the retainer.
2. Install the 7 screws that hold the heater cover to the heater case. Replace the seals.
3. Install the heater cover.
Verify that the heater cover is properly sealed.
4. Install the heater case.
If necessary, ask an assistant for help.
5. On the engine side of the cowl, install the nuts that hold the heater case to the cowl.
6. On the engine side of the cowl, install the 4 screws that hold the heater case to the cowl.
7. On the interior side of the cowl, install the screw.
NOTE: Refer to Fastener Notice in Service Precautions.
8. Tighten the following fasteners:
Tighten
- Tighten the screws on the engine side of the cowl to 1.9 N.m (17 lb in).
- Tighten the two nuts to 2.8 N.m (25 lb in).
- Tighten the screw on the interior side of the cowl to 11 N.m (97 lb in).
9. Install the heater hoses.
10. Install the coolant recovery reservoir.
11. Roll forward the instrument panel. Refer to IP Assembly - Rotating in Instrument Panel, Gauges and Warning Indicators.
12. Install the steering column.
13. Install the blower motor.
14. Install the blower motor cover.
15. Install the hinge pillar trim panels.
16. Install the center floor air distribution duct.
17. Connect the electrical connectors, as necessary.
18. Install the instrument panel storage compartment.
19. Add the engine coolant. Refer to Draining and Filling Cooling System in Cooling System.
20. Inspect the system for leaks.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.