Buick Regal: Suspension Position Sensor Calibration
Calibration Criteria
NOTE: Remove any excess weight and do not sit in the vehicle during the
headlamp leveling sensor learn procedure. Any additional weight will
cause the calibration of the front and rear suspension position sensors to
be inaccurate and affect the operation of the headlamp leveling system.
The headlamp leveling sensor learn procedure must be performed after a
suspension position sensor has
been removed/reinstalled/replaced, or if the headlamp leveling control module
has been serviced. The
learn procedure will set the front and rear suspension position sensors home
value. This value is used by
the headlamp leveling control module to determine the movement of the front and
rear suspension
systems. The headlamp leveling control module compares the information from both
suspension
position sensors and adjusts the headlamp leveling as needed.
Calibration Procedure
- Ignition ON/vehicle in Service Mode.
- Install a scan tool.
- Navigate to the Configuration/Reset Functions menu of the Headlamp
Control Module.
- Select Configuration/Reset Functions.
- Select Headlamp Leveling Sensor Learn procedure and follow the
directions displayed on the
screen.
HEADLAMP LED DRIVER MODULE REPLACEMENT
Preliminary Procedure
Headlamp Replacement.
- Headlamp LED Driver Module Screw [3x]
CAUTION:
Fastener Caution
Tighten
2.5 N.m (22 lb in)
- Headlamp LED Driver Module
Procedure
- Disconnect the electrical connector.
- After installation, aim the headlamps.
HEADLAMP CONTROL MODULE REPLACEMENT (T4L WITH T95 AND UVG)
- Headlamp Control Module Nut [2x]
CAUTION:
Fastener Caution
Tighten
9 N.m (80 lb in)
- Headlamp Control Module
Procedure
- Disconnect the electrical connector.
- Perform the necessary programming and setup procedure: Control
Module
References
HEADLAMP CONTROL MODULE REPLACEMENT (T4L WITHOUT T95 AND UVG)
Preliminary Procedure
Headlamp Replacement.
- Headlamp LED Driver Module Bolt [3x]
CAUTION:
Fastener Caution
Tighten
2.5 N.m (22 lb in)
- Headlamp Control Module
Procedure
- Disconnect the electrical connectors.
- Run all necessary programming and setup procedure.
FRONT FOG LAMP REPLACEMENT
Preliminary Procedure
Front Fog Lamp Bezel Replacement (Base) Front Fog Lamp Bezel Replacement (YWC).
- Front Fog Lamp Bolt [3x]
CAUTION:
Fastener Caution
Tighten
2.5 N.m (22 lb in)
- Front Fog Lamp
Procedure
- Disconnect the electrical connector.
- Replace bulbs as necessary.
FRONT FOG LAMP BRACKET REPLACEMENT
Preliminary Procedures
1. Front Bumper Fascia Replacement.
2. Front Fog Lamp Replacement.
- Front Fog Lamp Bracket
Procedure
Unlock the retaining tabs in direction of the arrow.
FRONT FOG LAMP AND FRONT OBJECT SENSOR WIRING HARNESS REPLACEMENT
Preliminary Procedures
1. Front Bumper Fascia Replacement.
2. Front Bumper Fascia Energy Absorber Replacement.
- Front Fog Lamp and Front Object Sensor Wiring Harness Retainer [6x]
- Front Fog Lamp and Front Object Sensor Wiring Harness
Procedure
- Disconnect the electrical connectors.
- Unlock the retaining tabs.
FRONT SIDE MARKER LAMP REPLACEMENT
Preliminary Procedure
Front Wheelhouse Liner Replacement (LGX) Front Wheelhouse Liner Replacement (LTG).
- Front Side Marker Lamp
Procedure
- Disconnect the electrical connector.
- Squeeze the front side marker lamp retainer, pull outward and down
to remove
front side marker lamp from the fascia.
- Transfer components as necessary.
FRONT SIDE TURN SIGNAL LAMP REPLACEMENT
- Front Side Turn Signal Lamp
Procedure
- Use a flat bladed plastic tool to remove.
- Unlock the retaining tabs in direction of the arrow.
- Disconnect the electrical connector.
- Replace bulbs as necessary.
HIGH MOUNT STOP LAMP REPLACEMENT (WAGON)
Preliminary Procedure
Rear End Spoiler Replacement (5-Door Wagon 35).
- High Mount Stop Lamp Bolt [2x]
CAUTION:
Fastener Caution
Tighten
2.5 N.m (22 lb in)
- High Mount Stop Lamp
Procedure
Disconnect the electrical connector.
HIGH MOUNT STOP LAMP REPLACEMENT (HATCHBACK)
Removal Procedure
1.
Liftgate Upper Side Trim Finish Panel (2) - Remove.
2.
High Mount Stop Lamp Nut (1) - Remove [4x].
3. Disconnect the electrical connector.
4. Release the retaining tab.
5. Apply a double layer of masking tape around the perimeter of the painted
surfaces.
6.
Using a flat-bladed trim tool, apply appropriate force between the taped
surface and high mount
stop lamp (1) to release.
7.
High Mount Stop Lamp (1) - Remove.
Installation Procedure
1.
High Mount Stop Lamp (1) - Install.
2. Remove the double layer of masking tape around the perimeter of the painted
surfaces.
3. Connect the electrical connector.
4.
CAUTION: Refer to Fastener Caution.
High Mount Stop Lamp Nut (1) - Install and tighten [4x] 2.5 N.m (22 lb in).
5.
Liftgate Upper Side Trim Finish Panel (2) - Install.
REAR BODY STRUCTURE STOP LAMP REPLACEMENT (5-DOOR HATCHBACK 68)
Preliminary Procedure
Open the rear compartment side trim panel service flap.
- Rear Body Structure Stop Lamp Nut [2x]
CAUTION:
Fastener Caution
Tighten
2.5 N.m (22 lb in)
- Rear Body Structure Stop Lamp
Procedure
- Unlock the retaining tabs.
- Disconnect the electrical connector.
- Replace bulbs as necessary.
REAR BODY STRUCTURE STOP LAMP REPLACEMENT (5-DOOR WAGON 35)
Removal Procedure
1. Liftgate - Open.
2.
Rear Body Structure Stop Lamp Cap (1) - Remove [2x].
3. Unlock the retaining tabs.
4.
Rear Body Structure Stop Lamp Bolt (1) - Remove [2x].
5. Rear Body Structure Stop Lamp (2) - Remove.
6. Unlock the retaining tabs.
7. Disconnect the electrical connector.
8. Replace bulbs as necessary.
Installation Procedure
1.
CAUTION: Fastener Caution.
Rear Body Structure Stop Lamp (2) - Install.
2. Connect the electrical connector.
3. Rear Body Structure Stop Lamp Bolt (1) - Install and tighten [2x] 2.5 N.m (22
lb in).
4.
Rear Body Structure Stop Lamp Cap (1) - Install [2x].
5. Liftgate - Close.
REAR LICENSE PLATE LAMP REPLACEMENT
- Rear License Plate Lamp
Procedure
- Unlock the retaining tabs.
- Disconnect the electrical connector.
- Replace bulbs as necessary.
TAIL LAMP REPLACEMENT (5-DOOR HATCHBACK 68)
- Liftgate Lower Trim Finish Panel Service Flap
Procedure
Unlock the retaining tabs.
- Tail Lamp Nut
CAUTION:
Fastener Caution
Tighten
2.5 N.m (22 lb in)
- Tail Lamp
Procedure
- Unlock the retaining tabs.
- Disconnect the electrical connector.
- Replace bulbs as necessary.
TAIL LAMP REPLACEMENT (5-DOOR WAGON 35)
- Liftgate Lower Trim Finish Panel Service Flap
Procedure
Unlock the retaining tabs.
- Tail Lamp Nut
CAUTION:
Fastener Caution
Tighten
2.5 N.m (22 lb in)
- Tail Lamp
Procedure
- Unlock the retaining tabs.
- Disconnect the electrical connector.
- Replace bulbs as necessary.
REAR CLOSURE HANDS FREE LAMP REPLACEMENT (WITHOUT GS BUMPER)
Preliminary Procedure
Rear Bumper Valance Panel Replacement (Base).
- Rear Closure Hands Free Lamp
Procedure
- Disconnect the electrical connector.
- Unlock the retaining tabs.
REAR CLOSURE HANDS FREE LAMP REPLACEMENT (WITH GS BUMPER)
Preliminary Procedure
Rear Bumper Valance Panel Replacement (GS).
- Rear Closure Hands Free Lamp
Procedure
- Disconnect the electrical connector.
- Unlock the retaining tabs.
REAR COMPARTMENT COURTESY LAMP REPLACEMENT (5-DOOR HATCHBACK 68)
- Rear Compartment Courtesy Lamp
Procedure
- Unlock the retaining tabs.
- Disconnect the electrical connector.
- Replace bulbs as necessary.
REAR COMPARTMENT COURTESY LAMP REPLACEMENT (5-DOOR WAGON 35)
- Rear Compartment Courtesy Lamp
Procedure
- Unlock the retaining tabs.
- Disconnect the electrical connector.
- Replace bulbs as necessary.
READ NEXT:
HEADLIGHTS/DAYTIME RUNNING LIGHTS (DRL) WIRING SCHEMATICS
Controls and Indicators
Halogen Lamps and Daytime Running Lamps (T4A)
Left LED Headlamp Power, Ground and Serial Data (T4L)
Left LED Low Be
SPECIFICATIONS
FASTENER SPECIFICATIONS
Reusable Threaded Fastener Tightening Specifications
NOTE:
All fasteners listed in this table can be reused after removal.
SCHEMATIC WIRING DIAGRAMS
INSIDE REAR
SEE MORE:
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Refer to Diagnostic Procedure Instructions for an overview of each
diagnostic category.
DTC Descripto
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diagnostic Procedure Instructions provides an overview of each
diagnostic category.
DTC Descriptor
DT