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Cylinder Head- Top/End Views

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Cylinder Head - Top/End View
GM1967294Courtesy of GENERAL MOTORS COMPANY
Cylinder Head- Top/End Views

Hole Thread Size Insert Drill Counterbore Tool Tap Driver Drill Depth- Maximum mm (in) Tap Depth- Maximum mm (in)
J 42385-
1 M8 x 1.25 210 206 207 208 209 26.5 (1.04) 19.0 (0.784)
2 M6 x 1.0 205 201 202 203 204 20.05 (0.789) 16.05 (0.632)
3 M10 x 1.5 215 211 212 213 214 28.0 (1.10) 20.0 (0.787)
4 M6 x 1.0 205 201 202 203 204 22.5 (0.885) 15.0 (0.688)