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I need help changing the heater core

Customer Question
i need help changing the heater core
Submitted: 8 years ago.Category: Pontiac
Ask Your Own Pontiac Question
Answered in 19 minutes by:
6/27/2010
Pontiac Mechanic: 17 years GM tech, GM master tech replied 8 years ago
17 years GM tech
17 years GM tech, GM master tech
Category: Pontiac
Satisfied Customers: 1,918
Experience: 25 years automotive experience, 15 years with Saturn
Verified

Hello, I have the complete step by step instructions here for you.

Please click accept ...thank you and good luck

 

  1. Before servicing the vehicle, refer to the Precautions section.

  2. Drain the engine cooling system.

  3. Disable the Supplemental Inflatable Restraint (SIR) system, as outlined in the Chassis Electrical Section.

  4. Recover the A/C refrigerant.

  5. Remove or disconnect the following:

    • Evaporator hose from the evaporator

    • Heater hoses

    • Drain tube elbow

    • Heater case plate for the heater pipes

    • Heater case plate for the evaporator block

    • End caps

    • Sound insulators

    • Instrument panel compartment

    • Passenger inflator module

    • Tilt steering lever

    • Upper and the lower steering column covers

    • Hazard warning switch

    • Instrument panel cluster trim plate

    • Instrument panel cluster

    • Driver inflator module

    • Steering wheel

    • Multifunction lever

    • Accessory trim plate

    • Radio

    • Cup holder

    • Gearshift handle

    • Ignition switch bolts

    • Instrument panel upper bolt covers

    • Electrical junction box connections

    • Fog lamp switch

    • Windshield side upper garnish molding

    • Console from the instrument panel

    • Instrument panel from the tie bar

    • Air distribution duct

    • Floor air duct

    • Tie bar

    • Daytime Running Lights (DRL) sensor wiring harness from the Heating, Ventilation, Air Conditioning (HVAC) module

    • Blower motor electrical connectors

    • Temperature actuator electrical connector

    • HVAC module from the vehicle

    • Heater core case cover

    • Heater core bracket

    • Heater core

To install:

  1. Install or connect the following:

    • Heater core

    • Heater core bracket. Torque the screw to 9 inch lbs. (1 Nm).

    • Heater core case cover. Torque the screws to 9 inch lbs. (1 Nm).

    • HVAC module

    • Temperature actuator electrical connector

    • Blower motor electrical connectors

    • DRL wiring harness

    • Tie bar. Torque the bolts to 15 ft. lbs. (20 Nm).

    • Floor air duct. Torque the bolts to 18 inch lbs. (2 Nm).

    • Air distribution duct. Torque the bolts to 27 inch lbs. (3 Nm).

    • Instrument panel

    • Console to the instrument panel

    • Windshield side upper garnish molding

    • Fog lamp switch

    • Electrical junction box connections

    • Instrument panel upper bolt covers

    • Ignition switch bolts

    • Gearshift handle

    • Cup holder

    • Radio. Torque the bolts to 27 inch lbs. (3 Nm).

    • Accessory trim plate

    • Multifunction lever. Torque the screw to 35 inch lbs. (4 Nm).

    • Steering wheel. Torque the nut to 27 ft. lbs. (37 Nm).

    • Driver inflator module. Torque the screw to 89 inch lbs. (10 Nm).

    • Instrument panel cluster

    • Instrument panel cluster trim plate

    • Hazard warning switch

    • Upper and the lower steering column covers. Torque the screw to 18 inch lbs. (2 Nm).

    • Tilt steering lever

    • Passenger inflator module. Torque the fasteners to 89 inch lbs. (10 Nm).

    • Instrument panel compartment

    • Sound insulators

    • End caps

    • Heater case plate for the evaporator block. Torque the nuts to 89 inch lbs. (10 Nm).

    • Heater case plate for the heater pipes

    • Drain tube elbow

    • Heater hoses

    • Evaporator hose. Torque the fitting to 18 ft. lbs. (25 Nm).

  2. Fill the engine cooling system.

  3. Evacuate and recharge the A/C system.

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