Envoy 2WD L6-4.2L (2008)
2. Install the spark plugs to the engine.
Tighten the spark plugs to 18 N.m (13 lb ft).
3. Install the ignition coils.
GMC Workshop Service and Repair Manuals
Compression Check >
< Ignition System - Runs Rough MIL/ON DTC P0300/P0306|Page 3426
Page 2
