GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Metric

English

Ignition Type

Module/Coil Per Cylinder

Firing Order

1-2-7-3-4-5-6-8

Primary Coil Current

10 Amps

Spark Plug Torque

15N·m

11 lb ft

Spark Plug Gap

1.27 mm

0.050 in

Spark Plug Type

GM 12571535

Initial spark plug torque on a new cylinder head is 20 N·m (15 lb ft)