FixVault

Cylinder Head - Front View

WARNING: This page is about a different car, the 2004 Saturn Ion 3, 2004 Saturn Ion 2, and 2004 Saturn Ion 1. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Cylinder Head Thread Specifications - Front View
GM524584Courtesy of GENERAL MOTORS CORP.
Cylinder Head - Front View

Service Call Out Thread Size Insert Drill Counterbore Tool Tap Driver Drill Depth (Maximum) Tap Depth (Maximum)
J 42385- MM (IN) MM (IN)
1 M8 x 1.25 210 206 207 208 209 25 0.984 20 0.787
2 M6 x 1.0 205 201 202 203 204 20 0.787 16 0.630