Engine Block - Top View

WARNING: This page is about a different car, the 2011 GMC Canyon and 2011 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Engine Block - Top View

Courtesy of GENERAL MOTORS CORP.

Service Hole Location	Thread Size	Drill	Counterbore Tool	Stop Collar	Tap	Driver	Insert	Drill Depth (Max)		Tap Depth (Min)
J 42385-400								mm	(in)	mm	(in)
1	M 11 x 2	402	n/a	n/a	403	404	108	59	2.324	51	2.009
2	M 6 x 1	201	202	n/a	203	204	205	22	0.866	18	0.709
3	M 6 x 1	201	202	n/a	203	204	205	30	1.182	26	1.024