GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 41623-B Cooler Quick Connect Tool
    • DT-47731 1/2 Inch Quick Connect Release Tool

Removal Procedure


    Object Number: 1195053  Size: SH
  1. Install the J 41623-B or the DT-47731 onto the differential oil cooler (DOC) pipe.

  2. Object Number: 1195054  Size: SH
  3. Slide the J 41623-B or the DT-47731 toward the DOC pipe fitting.

  4. Object Number: 1195056  Size: SH

    Important: Rotate the J 41623-B or the DT-47731 to engage the DOC pipe fitting's retainer slots.

    The J 41623-B or the DT-47731 should be nearly flush with the fitting.

  5. Connect the J 41623-B or the DT-47731 onto the DOC pipe fitting.

  6. Object Number: 1195059  Size: SH
  7. Rotate the J 41623-B or the DT-47731 until the retainer clip (1) rises above the fitting retainer seat.

  8. Object Number: 1195062  Size: SH
  9. Pull back on the DOC pipe to disengage the pipe from the DOC pipe fitting.
  10. Remove the J 41623-B or the DT-47731 from the DOC pipe.

Installation Procedure


    Object Number: 1195424  Size: SH

    Important: Inspect the DOC pipe fitting and retaining clip for signs of wear or damage. Replace the components if necessary.

  1. Install the DOC pipe into the DOC pipe fitting.
  2. A distinct snap should be heard or felt when assembling the DOC pipe to the fitting.

  3. To ensure the cooler line is properly installed, give the cooler pipe a gentle pull.