GM Service Manual Online
For 1990-2009 cars only

Application

Specification

Tightening Specification

3100 L82 (VIN M)

AC Type 41-940, gap at 1.52 mm (0.060")

15 N·m (11 lb ft)

3800 L36 (VIN K)

AC Type 41-921, gap at 1.52 mm (0.060")

15 N·m (11 lb ft)

3800 L67 (VIN 1)

NGK Type PTR4B-15, gap at 1.52 mm (0.060")

Replace with AC Type 41-921, gap at 1.52 mm (0.060")

15 N·m (11 lb ft)