GM Service Manual Online
For 1990-2009 cars only

Engine

Spark Plug Type

Spark Plug Gap

Notice: Allow the engine to cool down before removing the spark plugs. Removing the spark plugs from an engine at operating temperature may damage the spark plug threads in the aluminum cylinder head..

1.6L

Denso Type K20PR-U11

1.0-1.1 mm (0.039-0.043 in)

NGK Type BKR6E-11

2.0L

Denso Type SK16PR11 or PK16PR11

NGK Type IFR5G11 or PFR5G-11

Replace the spark plugs every 100,000 km (60,000 mi) or 60 months.