2005 Buick Rainier Transmission Mount

You should raise and support the vehicle, place a drain pan under the transmission oil pan, remove the oil pan drain plug, and the bolts and position aside the range selector cable bracket for clearance while lowering the pan and the oil pan bolts from the front and sides of the pan only, loosen the rear oil pan bolts approximately 4 turns, lightly tap the oil pan with a rubber mallet, remove the remaining oil pan bolts, the oil pan and the gasket, the filter, and the filter seal, discard the seal, inspect the fluid color and the filter, pry the metal crimping away from the top of the filter and pull apart, clean the transmission case and the oil pan gasket surfaces with solvent, and air dry and remove all traces of the old gasket material.

You should 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, avoid installing the new retaining ring onto the fitting by pushing the retaining ring, ensure that the three 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, install the cooler line into the fitting, ensure that the cooler line is fastened into the quick connect fitting, position (snap) the plastic cap onto the fitting, ensure that the plastic cap is fully seated against the fitting, no gap is present between the cap and the fitting and the yellow identification band on the tube is hidden within the quick connect fitting and fill the transmission to the proper level.

You should raise the vehicle, place a drain pan under the vehicle, remove the propeller shaft and the case extension housing rear oil seal, pry the seal from the housing, inspect the case extension housing for damage and replace the extension housing if necessary.