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Rear Wheel Speed Sensor: Installation

CAUTION: New nuts must be used as torque retention of old nuts may not be sufficient.
  1. Install hub and brake shield to rear axle control arm with new nuts. Tighten rear hub assembly-to-knuckle nuts to 50 N.m (37 ft lbs) + 30° to 45°.
    2. Fig 1: Installing Hub & Brake Shield To Rear Axle Control Arm
    G01943768Courtesy of GENERAL MOTORS CORP.
  2. Install brake rotor/drum and tighten retaining screw. Tighten brake drum retaining fastener to 4 N.m (35 inch lbs).
    3. Fig 2: Installing Brake Rotor/Drum
    G01943769Courtesy of GENERAL MOTORS CORP.
  3. On vehicles equipped with rear disc brakes, perform the following steps:
    CAUTION: Clean caliper support bracket fasteners thoroughly with brake and choke cleaner (P/N 21007432 or equivalent). Apply Loctite 272(R) Threadlocker (or equivalent) to caliper support bracket fasteners. If Loctite 272(R) Threadlocker (or equivalent) is not available, new caliper support bracket fasteners must be used.
    1. Install caliper to rear axle control arm, tighten fasteners. Tighten rear caliper-to-rear axle control arm bolts to 80 N.m (59 ft lbs).
      2. Fig 3: Installing Caliper To Rear Axle Control Arm
      G01943770Courtesy of GENERAL MOTORS CORP.
    2. Connect brake pipe support bracket to control arm. Tighten brake pipe bracket-to-rear control arm to 8 N.m (71 inch lbs).
      3. Fig 4: Connecting Brake Pipe Support Bracket To Control Arm
      G01943771Courtesy of GENERAL MOTORS CORP.
    NOTE: Ensure that all electrical connections are fully seated and latches are engaged.
  4. Connect ABS sensor electrical connector.
    Fig 5: Connecting ABS Sensor Electrical Connector
    G01943772Courtesy of GENERAL MOTORS CORP.
    CAUTION: Before installing wheels, remove rust or corrosion from wheel mounting surfaces and brake rotors. Failure to do so can cause wheel bolts to loosen in service.
  5. Position wheel and tire assembly onto hub.
  6. Install wheel bolts and tighten in a crisscross pattern.
    1. Hand tighten all five wheel bolts.
    2. Use a torque wrench to tighten wheel bolts using a crisscross pattern. Tighten wheel bolts (initial torque) to 63 N.m (46 ft lbs).
    3. Use a torque wrench to final tighten wheel bolts using a crisscross pattern. Tighten wheel bolts (final torque) to 125 N.m (92 ft lbs).
  7. Lower vehicle from hoist.
  8. Program EBTCM with correct engine and transaxle options or DTD C0551 will set and traction control will not operate.
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