GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 Yukon XL - 4WD 🢒 Body and Accessories 🢒 Body Rear End 🢒 Pickup Box Tonneau Cover Replacement

Removal Procedure
  1. Open the endgate.
  2. Remove the cover from vehicle.

    3. Object Number: 609421 Size: SH
  3. Remove the bows from side rails.
  4. Remove the rear rail from vehicle.
  5. Remove the side and front rails from vehicle.
  6. Close endgate.

Installation Procedure
  1. Open the endgate.
  2. Loose assemble side and front rails to vehicle.
  3. Attach rear rail to side rails.

    4. 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. Close endgate to align rail assembly.

    5. Tighten
    Tighten side rail bolts 9 N·m (80 lb in).


    Object Number: 609421 Size: SH
  5. Open the endgate.
  6. Install the bows to rails inline with each fastener.
  7. Install cover starting at front of vehicle and working toward rear.
  8. Close the endgate.