Installation Procedure

Install the crankshaft balancer carefully by pressing into position.

Fig 1: Engine Oil Pump Rotor And Crankshaft
Courtesy of GENERAL MOTORS COMPANY

NOTE: The crankshaft balancer flange must fit to the hexagon of the oil pump rotor (2) and to the two-flat of the crankshaft (1). The TDC markings on crankshaft balancer and engine front cover must match.
Measure the distance (a) between the crankshaft balancer (2) and the mark on the engine front cover (1). The distance (a) should be 5.5 mm (0.21654 in).

Fig 2: Engine Front Cover And Crankshaft Balancer
Courtesy of GENERAL MOTORS COMPANY
Install a NEW crankshaft balancer bolt.
NOTE: Never re-use the crankshaft balancer bolt.
Tighten the crankshaft balancer bolt (4) to 150 N.m (111 lb ft) while fixing the crankshaft balancer (3) with EN-49979 crankshaft shock mount retainer (1) and EN-956-1 extension (2). Use EN-470-B wrench.

Fig 3: Crankshaft Balancer, Retainer And Extension
Courtesy of GENERAL MOTORS COMPANY

CAUTION: Refer to Fastener Caution .

CAUTION: Refer to Torque-to-Yield Fastener Caution .
Tighten the crankshaft balancer bolt to an additional 45 - 60 degrees while fixing the crankshaft balancer (3) with EN-49979 crankshaft shock mount retainer (1) and EN-956-1 extension (2).
Install the drive belt to the crankshaft balancer and remove the fixing pin. Refer to Drive Belt Replacement .
Install the right wheelhouse liner. Refer to Front Wheelhouse Liner Replacement .
Lower the vehicle.
Check and correct engine oil level.