Cylinder Head - Exhaust Manifold Deck View

WARNING: This page is about a different car, the 2007 Isuzu i-370, 2007 GMC Canyon, and 2007 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Cylinder Head - Exhaust Manifold Deck 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 8 x 1.25	206	207	n/a	208	209	210	28	1.103	23	0.906
2	M 6 x 1	201	202	n/a	203	204	205	22	0.866	18	0.709
3	M 6 x 1	405	n/a	406	203	204	205	28	1.103	23	0.906
4	M 10 x 1.5	417	n/a	n/a	418	419	420	53	2.088	45	1.773