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HOMESERVICE MANUALSBUICK2010LUCERNE CXL, 3.9 MREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 127 (HEATING, VENTILATION, AND AIR CONDITIONING)REPAIR INSTRUCTIONSAIR CONDITIONING (A/C) REFRIGERANT PRESSURE SENSOR REPLACEMENT
2010 Buick Lucerne CXL, 3.9 M

Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement

2010 Buick Lucerne CXL, 3.9 MSECTION Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement
WARNING: This page is about a different car, the 2010 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Air Conditioning (A/C) Refrigerant Pressure Sensor
GM1661545Courtesy of GENERAL MOTORS CORP.
Callout Component Name

Preliminary Procedure

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the front air deflector. Refer to Front Air Deflector Replacement .
  3. Unclip the brake lines from engine frame to allow access.
  4. Disconnect the A/C pressure sensor electrical connector.
1 O-ring
Tip:  Remove and discard the O-ring. Refer to Air Conditioning O-Ring Seal Replacement .
2 A/C Refrigerant Pressure Sensor
CAUTION: Refer to Fastener Caution .

Tighten:  5 N.m (44 lb in)
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.