Install the left spark plugs and tighten to
15 N·m (11 lb ft).
Apply a small amount of dielectric grease GM P/N 12345579,
(Canadian P/N 1974984), to each spark plug boot (1) of the ignition coil assembly.
Carefully, install the left ignition coil assembly.
Install the left ignition coil assembly bolts (708) and ball studs (709).
Tighten the left ignition coil assembly bolts (708) and ball studs (709) to
10 N·m (89 lb in).