Oil Pump Assembly Installation: Installation

WARNING: This page is about a different car, the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Installing J 25025-1

Courtesy of GENERAL MOTORS CORP.

Install the J 25025-1 . See Special Tools .

Fig 2: View Of 39855-2

Courtesy of GENERAL MOTORS CORP.

Remove the J 39855-2 which is part of kit J 39855 . See Special Tools .

Fig 3: View Of Pump To Drum Thrust Washer

Courtesy of GENERAL MOTORS CORP.

Install the pump to drum thrust washer (601).
Use J 36850 or equivalent to retain the washer to the pump. See Special Tools .

Fig 4: View Of Pump Cover, Case & Gasket

Courtesy of GENERAL MOTORS CORP.

Install the pump cover to case gasket (6).

IMPORTANT: The oil pump to case seal is installed after the oil pump assembly, during torque converter installation. Refer to Converter Housing Installation .

Install the oil pump assembly (4) into the case and align all holes properly.

Fig 5: View Of J 25025-1

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice .

IMPORTANT: The pump to case bolt O-ring seals (3) must be replaced.

Install the pump to case bolts (2) with new O-ring seals (3).
Tighten: Tighten the bolts to 29 N.m (21 lb ft).
Remove the J 25025-1 . See Special Tools .

Fig 6: Locating Pump To Case Bolts & O-Ring Seals

Courtesy of GENERAL MOTORS CORP.

Install the remaining pump to case bolts (2) and O-ring seals (3), in the holes where the J 25025-1 were. See Special Tools .
Tighten: Tighten the bolts to 29 N.m (21 lb ft).