GM Service Manual Online
For 1990-2009 cars only

Ignition System Specifications

Application

Specification

Metric

English

Firing Order

1-3-4-2

Spark Plug Torque

25 N·m

18 lb ft

Spark Plug Gap

1.0-1.2 mm

0.040-0.048 in

Spark Plug Type

SC20HR11 DENSO