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July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Spark Plug Replacement

Fig 1: Spark Plugs
GM2381728Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
Preliminary Procedure 
Remove the ignition coil. Refer to Ignition Coil Replacement .
1 Spark Plug (Qty: 4)
CAUTION: Refer to Fastener Caution .

Tighten 
25 N.m (18 lb ft)