GM Service Manual Online
For 1990-2009 cars only

3.8L (L36)

Application

Specification

Spark Plug

41-921

Spark Plug Gap

0.060 inch (1.524 mm)

5.7L (LS1)

Application

Specification

Spark Plug

41-931

Spark Plug Gap

0.060 inch (1.524 mm)