2010 GMC Yukon Automatic Transmission Oil Cooler Line Connector

You can pull the plastic cap back from the quick connect fitting and down along the cooler line about 5 cm (2 in), pull on one of the open ends of the retaining ring to rotate the retaining ring around the quick connect fitting until the retaining ring is out of position and can be completely removed, remove the retaining ring from the quick connect fitting, discard the retaining ring, pull the cooler line straight out from the quick connect fitting.

You can install a new retaining ring into the quick connect fitting using the following procedure, hook one of the open ends of the retaining ring in one of the slots in the quick connect fitting, rotate the retaining ring around the fitting until the retaining ring is positioned with all 3 ears through the 3 slots on the fitting, do not install the new retaining ring onto the fitting by pushing the retaining ring, ensure that the 3 retaining ring ears are seen from inside the fitting and that the retaining ring moves freely in the fitting slots, install the cooler line into the quick connect fitting, insert the cooler line end into the quick connect fitting until a click is either heard or felt, do not use the plastic cap on the cooler line to install the cooler line into the fitting, pull back sharply on the cooler line to ensure that the cooler line is fastened into the quick connect fitting, position (snap) the plastic cap onto the fitting. Do not manually depress the retaining ring when installing the plastic cap onto the quick connect fitting, ensure that the plastic cap is fully seated against the fitting, ensure that no gap is present between the cap and the fitting, ensure that the yellow identification band on the tube is hidden within the quick connect fitting, and fill the transmission to the proper level with DEXRON(R) VI transmission fluid.

The recommended torque is 24 Nm (18 lb-ft).

You can drain the cooling system and remove the transaxle oil cooler pipe from the oil cooler fittings on the radiator, and do not remove the upper and lower transaxle oil cooler fittings from the radiator at the same time otherwise the transaxle oil cooler may fall inside the radiator end tank.