GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

The ELC system air lines may be repaired by splicing in a coupling at the leaking area using the following procedure:


    Object Number: 187172  Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Locate the leaking area with soap and water or a stethoscope.
  3. Cut and remove the leaking line (2) section.
  4. Perform the following steps in order to splice the replacement line to the existing line:
  5. 4.1. Remove the plastic retainer pin from one of the nuts and slide the replacement line onto the nut until the new line bottoms in the rubber seal (5).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    4.2. Hold the line in the position described in the above step.

    Tighten
    Tighten the nut to 8 N·m (70 lb in).

    4.3. Attach the original line to the other end of the coupling as described in the previous steps.
    4.4. Secure the air line to the vehicle in a location where the line is not pinched, or kinked, and will not contact the exhaust system. Use a tie strap.
  6. Re-inflate the system and check for leaks.
  7. Lower the vehicle.