Removal Procedure

Open the hood.
Remove the engine front cover with oil pump. Refer to Engine Front Cover with Oil Pump Replacement .
Push the timing chain (2) in direction to the timing chain tensioner (1) and secure the tensioner with EN-955-10 fixing pin (3).

Fig 1: Timing Chain And Timing Chain Tensioner
Courtesy of GENERAL MOTORS COMPANY

NOTE: If EN-955-10 fixing pin can not be inserted, compress the timing chain tensioner further with the aid of a flat bladed tool to allow complete insertion of the pin.
Remove the 2 upper timing chain guide bolts (1).

Fig 2: Upper Timing Chain Guide And Bolts
Courtesy of GENERAL MOTORS COMPANY
Remove the upper timing chain guide (2).
Remove the 2 timing chain guide right side bolts (2).

Fig 3: Timing Chain Guide Right Side
Courtesy of GENERAL MOTORS COMPANY
Remove the timing chain guide right side (1).
Remove the timing chain tensioner shoe bolt (2).

Fig 4: Timing Chain Tensioner Shoe And Bolt
Courtesy of GENERAL MOTORS COMPANY
Remove the timing chain tensioner shoe (1).
Remove the timing chain (1) along with the crankshaft sprocket (2).

Fig 5: Timing Chain And Crankshaft Sprocket
Courtesy of GENERAL MOTORS COMPANY
Remove the engine front cover gasket (1).

Fig 6: Engine Front Cover Gasket
Courtesy of GENERAL MOTORS COMPANY