I need detailed instructions for replacing the heater core

Tiny
LARRY
  • MEMBER
  • 2000 CHEVROLET SILVERADO
  • 41,700 MILES
Would like to replace the heater core in this truck
Do you
have the same problem?
Yes
No
Tuesday, September 27th, 2011 AT 8:56 PM

2 Replies

Tiny
ASEMASTER6371
  • EXPERT
Here are some pictures of the core. The instrument cluster must be removed to gain acess to the case assembly. It pays 6.5 hours in the book plus evac and charge the ac.

Roy
Was this
answer
helpful?
Yes
No
-1
Friday, April 30th, 2021 AT 2:34 PM
Tiny
WOLFENPIXELS
  • MEMBER
Ok remove dash and instrument panel as suggested. Then Service Information
Home Publications Number Search New Bulletins Bulletin Search Feedback Help

2000 Chevrolet C Silverado - 2WD | Sierra, Silverado,
Heater Core Replacement
Removal Procedure
1. Drain the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
3. Remove the heater/vent module. Refer to Heater/Vent Module Replacement.
4. Remove the heater core cover screws.

Object Number: 363771
Click here for detailed picture of above image.
5. Remove the heater core cover.

Object Number: 363772
Click here for detailed picture of above image.
6. Remove the heater core.
Installation Procedure

Object Number: 363772
Click here for detailed picture of above image.
1. Install the heater core.

Object Number: 363771
Click here for detailed picture of above image.
2. Install the heater core cover.

Notice: Refer to Fastener Notice in Cautions and Notices.
3. Install heater core cover screws.

Tighten
Tighten the screws to 1.6?N m (14?Lb?In).
4. Install the heater/vent module. Refer to Heater/Vent Module Replacement.
5. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
6. Refill the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
2. If equipped remove the auxiliary battery. Refer to Battery Replacement in Engine Electrical.
3. Disconnect the heater hoses. Refer to Heater Hoses Replacement.
4. Remove the accumulator. Refer to Air Conditioning Accumulator Replacement.
5. Remove the instrument panel carrier. Refer to Instrument Panel Carrier Replacement in Instrument Panel, Gauges and Console.
6. Remove the HVAC module drain hose.

Object Number: 499156
Click here for detailed picture of above image.
7. Disconnect the electrical harnesses and the ground connections as needed.

Object Number: 363009
Click here for detailed picture of above image.
8. Remove the mounting nuts and the screws from the HVAC module.
9. Remove the HVAC module assembly from the vehicle.
Installation Procedure

Object Number: 363009
Click here for detailed picture of above image.
1. If you are replacing the HVAC module, transfer the components from the old HVAC module as necessary.
2. Install the HVAC module assembly to the vehicle.

Notice: Refer to Fastener Notice in Cautions and Notices.
3. Install the mounting nuts and the screws to the HVAC module.

Tighten
Tighten the mounting screws to 4?N m (35?Lb?In).
Tighten the mounting nuts to 9?N m (80?Lb?In).

Object Number: 499156
Click here for detailed picture of above image.
4. Connect the electrical harnesses and the ground connections.
5. Install the HVAC module drain hose.
6. Install the instrument panel carrier. Refer to Instrument Panel Carrier Replacement in Instrument Panel, Gauges and Console.
7. Install the accumulator. Refer to Air Conditioning Accumulator Replacement.
8. Connect the heater hoses. Refer to Heater Hoses Replacement.
9. Install the auxiliary battery. Refer to Battery Replacement in Engine Electrical.
10. Fill the cooling system. Refer to Cooling System Draining and Filling
hope that helped and yes im a gm mechanic:)
Was this
answer
helpful?
Yes
No
Friday, April 30th, 2021 AT 2:34 PM

Please login or register to post a reply.

Sponsored links