GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Metric

English

Firing Order

1-3-2

Spark Plug Wire Resistance

1,800-8,000 Ohms

Spark Plug Gap - Leaded

0.8 mm

0.031 in

Spark Plug Gap - Unleaded

Bosch - 1.1 mm,

NGK - 1.2 mm

Bosch - 0.043 in,

NGK - 0.047 in

Spark Plug Torque

25 N·m

18 lb ft

Spark Plug Type - Leaded

Bosch - WR8DC,

NGK - BPR5EY

Spark Plug Type - Unleaded

Bosch - WR8DCX,

NGK - BPR5EY-11