Cobalt L4-2.0L SC (2007)
5. Install the water pump bolt.
Tighten the water pump bolt to 25 N.m (18 lb ft).
6. Install the idler pulley.
Tighten the bolts to 25 N.m (18 lb ft).
7. Install the drive belt tensioner.
8. Install the drive belt tensioner bolts.
Tighten the drive belt tensioner bolts to 45 N.m (33 lb ft).
9. Install the crankcase balancer.