Sierra 1500 2WD V8-5.3L VIN B HO (2006)
Ignition Coil: Service and Repair
IGNITION COIL(S) REPLACEMENT
REMOVAL PROCEDURE
1. If equipped with regular production option (RPO) HP2, disconnect the energy storage box (ESB).
2. Remove the spark plug wire from the ignition coil.
3. Disconnect the ignition coil electrical connector.
4. If equipped with regular production option (RPO) HP2, remove the auxiliary heater water pump bracket bolts.
5. Remove the auxiliary heater water pump from the studs, and reposition out of the way.