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Engine Block - Rear View

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Block Bolt Holes - Rear View
GM64590Courtesy of GENERAL MOTORS CORP.
Engine Block - Rear View

Hole Thread Size Insert Drill Counterbore Tool Tap Driver Drill Depth - Maximum mm (in) Tap Depth - Maximum mm (in)
1 M10 x 1.5 J 42385-215 J 42385-211 J 42385-212 J 42385-213 J 42385-214 27.0 (1.06) 21.5 (0.846)
2-4 M8 x 1.25 J 42385-210 J 42385-206 J 42385-207 J 42385-208 J 42385-209 22.5 (0.885) 17.5 (0.688)
5-6 M10 x 1.5 J 42385-215 J 42385-211 J 42385-212 J 42385-213 J 42385-214 27.0 (1.06) 21.5 (0.846)
7-13 M8 x 1.25 J 42385-210 J 42385-206 J 42385-207 J 42385-208 J 42385-209 22.5 (0.885) 17.5 (0.688)
14-16 M10 x 1.5 J 42385-215 J 42385-211 J 42385-212 J 42385-213 J 42385-214 27.0 (1.06) 21.5 (0.846)
17-18 M8 x 1.25 J 42385-210 J 42385-206 J 42385-207 J 42385-208 J 42385-209 22.5 (0.885) 17.5 (0.688)