Removal Procedure

WARNING: This page is about a different variant/trim than selected.

Engine Oil and Oil Filter - Remove and DISCARD - Engine Oil and Oil Filter Replacement
Transmission - Remove - Automatic Transmission Removal and Installation (LM2, 4WD and NP0 without F47) , or Automatic Transmission Removal and Installation (LM2, 4WD and NQH without F47) , or Automatic Transmission Removal and Installation (LM2, 4WD and NP0 with F47) , or Automatic Transmission Removal and Installation (LM2, 4WD and NQH with F47)
Courtesy of GENERAL MOTORS COMPANY

Install the EN-49979 Crankshaft Holder (1) with EN-956-1 Extension (3).
Courtesy of GENERAL MOTORS COMPANY

Automatic Transmission Flex Plate Bolt (2) - Remove and DISCARD [8x]
Automatic Transmission Flex Plate (1) - Remove
Courtesy of GENERAL MOTORS COMPANY

Remove the EN-49979 Crankshaft Holder (1) with EN-956-1 Extension (3).
Reposition hoses as needed.
Courtesy of GENERAL MOTORS COMPANY

Remove the 16 timing chain cover bolts (1, 2).
Courtesy of GENERAL MOTORS COMPANY

NOTE:
Avoid prying close to the transmission pins.

Using a suitable tool at the locations indicated by the arrows to pry, loosen the timing chain lower cover carefully from the engine block.
Courtesy of GENERAL MOTORS COMPANY

Timing Chain Lower Cover (1) - Remove
Courtesy of GENERAL MOTORS COMPANY

NOTE:
Use a suitable rubber or plastic mallet to remove the crankshaft rear oil seal.

Crankshaft Rear Oil Seal (1) - Remove and DISCARD
Courtesy of GENERAL MOTORS COMPANY

Install the EN-47634 Holder (1) with EN-956-1 Extension (4) onto the oil pump sprocket (2) and loosen the oil pump drive bolt (3).
Remove the EN-47634 Holder (1) with EN-956-1 Extension (4).
Courtesy of GENERAL MOTORS COMPANY

Oil Pump Drive Bolt (1) - Remove
Oil Pump Sprocket (2) - Remove
Timing Belt (3) - Remove