Removal Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Remove the plastic caps from the quick connect fittings by pulling the caps back along the pipe before installation.

Fig 1: Special Tool On Transmission Oil Cooler Pipe

Courtesy of GENERAL MOTORS CORP.

Install the DT-41623-B 3/8 inch line quick release tool onto the transmission oil cooler (TOC) pipe, or use the DT-28585 universal snap ring remover for the 5/8 inch line.

Fig 2: Sliding Toward Generator Cooling Inlet Pipe Fitting

Courtesy of GENERAL MOTORS CORP.

Slide the DT-41623-B 3/8 inch line quick release tool toward the TOC pipe fitting, or use the DT-28585 universal snap ring remover for the 5/8 inch line.

Fig 3: Rotating Quick-Connect On Coolant Pipe

Courtesy of GENERAL MOTORS CORP.

NOTE:

Rotate the DT-41623-B 3/8 inch line quick release tool to engage the TOC pipe fitting's retainer slots.

The DT-41623-B 3/8 inch line quick release tool should be nearly flush with the fitting.

Connect the DT-41623-B 3/8 inch line quick release tool onto the TOC pipe fitting.

Fig 4: Rotating Quick Release Tool

Courtesy of GENERAL MOTORS CORP.

Rotate the DT-41623-B 3/8 inch line quick release tool or use the DT-28585 universal snap ring remover for the 5/8 inch line until the retainer clip (1) rises above the fitting retainer seat.

Fig 5: Special Tool And Generator Cooling Inlet Pipe

Courtesy of GENERAL MOTORS CORP.

Pull back on the TOC pipe to disengage the pipe from the TOC pipe fitting.
Remove the DT-41623-B 3/8 inch line quick release tool or the DT-28585 universal snap ring remover for the 5/8 inch line from the TOC pipe.