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 MANUALSCADILLAC1998SEVILLE SLS V8-4.6L VIN YREPAIR AND DIAGNOSISBODY AND FRAMEBODY CONTROL SYSTEMSBODY CONTROL MODULESERVICE AND REPAIRBODY CONTROL MODULE REPLACEMENT (HEATER AND A/C CONTROL/IPM)
1998 Cadillac Seville SLS V8-4.6L VIN Y
Body Control Module Replacement (Heater and A/C Control/IPM)
1998 Cadillac Seville SLS V8-4.6L VIN YSECTION Body Control Module Replacement (Heater and A/C Control/IPM)
REMOVAL PROCEDURE

1. Remove the instrument panel center trim plate.
2. Remove the console trim plate.
3. Remove the control assembly.

4. Remove the control assembly bracket fasteners.
5. Disconnect the electrical connector from the control assembly.

6. Remove the control assembly retaining nuts.
7. Remove the control assembly from the bracket.
INSTALLATION PROCEDURE

1. Install the control assembly to the bracket.
2. Install the control assembly retaining nuts.
Tighten
Tighten the radio retaining nuts to 10 N.m (88 lb in).

3. Connect the electrical connector to the control assembly.
4. Install the control assembly bracket fasteners.

5. Install the control assembly to vehicle.
6. Install the console trim plate.
7. Install the instrument panel center trim plate.
Body Control Module Replacement (Heater and A/C Control/IPM) : Removal Procedure:
1. Remove the instrument panel center trim plate.
2. Remove the console trim plate.
3. Remove the control assembly.
Body Control Module Replacement (Heater and A/C Control/IPM) : Removal Procedure:
4. Remove the control assembly bracket fasteners.
5. Disconnect the electrical connector from the control assembly.
Body Control Module Replacement (Heater and A/C Control/IPM) : Removal Procedure:
6. Remove the control assembly retaining nuts.
7. Remove the control assembly from the bracket.
INSTALLATION PROCEDURE
Body Control Module Replacement (Heater and A/C Control/IPM) : Installation Procedure:
1. Install the control assembly to the bracket.
2. Install the control assembly retaining nuts.
Tighten
Tighten the radio retaining nuts to 10 N.m (88 lb in).
Body Control Module Replacement (Heater and A/C Control/IPM) : Installation Procedure:
3. Connect the electrical connector to the control assembly.
4. Install the control assembly bracket fasteners.
Body Control Module Replacement (Heater and A/C Control/IPM) : Installation Procedure:
5. Install the control assembly to vehicle.
6. Install the console trim plate.
7. Install the instrument panel center trim plate.
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.