Thread Repair Specifications. GMC Truck GMC C Sierra

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Engine 🢒 Engine Mechanical - 6.6L (LB7) 🢒 Thread Repair Specifications

Table 1:	Cylinder Head - Exhaust Port View
Table 2:	Cylinder Head - Intake Port View
Table 3:	Cylinder Head - Top View
Table 4:	Cylinder Head - Back View
Table 5:	Cylinder Head - Front View

Service Hole Location	Thread Size	Drill	Counterbore Tool	Stop Collar	Tap	Driver	Insert	Drill Depth (Max)		Tap Depth (Min)
								mm	(in)	mm	(in)
1	M 10 x 1.5	211	212	N/A	213	214	215	25	0.98	21	0.827
2	M 10 x 1.25	not serviced						80	3.15	30	1.181
3	M 10 x 1.5	211	212	N/A	213	214	215	25	0.98	21	0.827
4	M 10 x 1.25	not serviced						80	3.15	30	1.181
5	M 10 x 1.5	211	212	N/A	213	214	215	25	0.98	21	0.827
6	M 10 x 1.25	not serviced						80	3.15	30	1.181
7	M 10 x 1.5	211	212	N/A	213	214	215	25	0.98	21	0.827
8	M 10 x 1.25	not serviced						80	3.15	30	1.181
9	M 10 x 1.5	211	212	N/A	213	214	215	25	0.98	21	0.827
10	M 10 x 1.5	211	212	N/A	213	214	215	25	0.98	21	0.827
11	M 10 x 1.5	211	212	N/A	213	214	215	25	0.98	21	0.827
12	M 10 x 1.5	211	212	N/A	213	214	215	25	0.98	21	0.827

Service Hole Location	Thread Size	Drill	Counterbore Tool	Stop Collar	Tap	Driver	Insert	Drill Depth (Max)		Tap Depth (Min)
								mm	(in)	mm	(in)
1	M 8 x 1.25	206	207	N/A	208	209	210	21	0.83	17	0.669
2	M 8 x 1.25	206	207	N/A	208	209	210	21	0.83	17	0.669
3	M 8 x 1.25	206	207	N/A	208	209	210	21	0.83	17	0.669
4	M 8 x 1.25	206	207	N/A	208	209	210	21	0.83	17	0.669
5	M 8 x 1.25	206	207	N/A	208	209	210	21	0.83	17	0.669
6	M 8 x 1.25	206	207	N/A	208	209	210	21	0.83	17	0.669
7	M 8 x 1.25	206	207	N/A	208	209	210	21	0.83	17	0.669
8	M 8 x 1.25	206	207	N/A	208	209	210	21	0.83	17	0.669
9	M 8 x 1.25	206	207	N/A	208	209	210	21	0.83	17	0.669
10	M 8 x 1.25	206	207	N/A	208	209	210	21	0.83	17	0.669
11	M 8 x 1.25	206	207	N/A	208	209	210	21	0.83	17	0.669
12	M 8 x 1.25	206	207	N/A	208	209	210	21	0.83	17	0.669
13	M 8 x 1.25	206	207	N/A	208	209	210	21	0.83	17	0.669
14	M 8 x 1.25	206	207	N/A	208	209	210	21	0.83	17	0.669

Service Hole Location	Thread Size	Drill	Counterbore Tool	Stop Collar	Tap	Driver	Insert	Drill Depth (Max)		Tap Depth (Min)
								mm	(in)	mm	(in)
1	M 10 x 1.5	211	212	N/A	213	214	215	26	1.02	21	0.827
2	M 6 x 1.0	201	202	N/A	203	204	205	17	0.67	13	0.512
3	M 10 x 1.5	not serviced						26	1.02	21	0.827
4	M 6 x 1.0	201	202	N/A	203	204	205	17	0.67	13	0.512
5	M 10 x 1.5	211	212	N/A	213	214	215	26	1.02	21	0.827
6	M 6 x 1.0	201	202	N/A	203	204	205	17	0.67	13	0.512
7	M 10 x 1.5	not serviced						26	1.02	21	0.827
8	M 6 x 1.0	201	202	N/A	203	204	205	17	0.67	13	0.512
9	M 10 x 1.5	211	212	N/A	213	214	215	26	1.02	21	0.827
10	M 6 x 1.0	201	202	N/A	203	204	205	17	0.67	13	0.512
11	M 8 x 1.25	206	207	N/A	208	209	210	21	0.83	17	0.669
12	M 6 x 1.0	201	202	N/A	203	204	205	17	0.67	13	0.512
13	M 6 x 1.0	201	202	N/A	203	204	205	17	0.67	13	0.512
14	M 10 x 1.5	211	212	N/A	213	214	215	26	1.02	21	0.827
15	M 6 x 1.0	201	202	N/A	203	204	205	17	0.67	13	0.512
16	M 10 x 1.5	211	212	N/A	213	214	215	26	1.02	21	0.827
17	M 6 x 1.0	201	202	N/A	203	204	205	17	0.67	13	0.512
18	M 10 x 1.5	211	212	N/A	213	214	215	26	1.02	21	0.827
19	M 6 x 1.0	201	202	N/A	203	204	205	17	0.67	13	0.512
20	M 10 x 1.5	211	212	N/A	213	214	215	26	1.02	21	0.827
21	M 6 x 1.0	201	202	N/A	203	204	205	17	0.67	13	0.512
22	M 6 x 1.0	201	202	N/A	203	204	205	17	0.67	13	0.512

Service Hole Location	Thread Size	Drill	Counterbore Tool	Stop Collar	Tap	Driver	Insert	Drill Depth (Max)		Tap Depth (Min)
								mm	(in)	mm	(in)
1	M 10 x 1.5	211	212	N/A	213	214	14mm length	20	0.79	16	0.63
2	M 10 x 1.5	211	212	N/A	213	214	14mm length	20	0.79	16	0.63
3	M 8 x 1.25	206	207	N/A	208	209	854	17	0.67	13	0.512
4	M 8 x 1.25	206	207	N/A	208	209	854	17	0.67	13	0.512
5	M 10 x 1.5	211	212	N/A	213	214	14mm length	20	0.79	16	0.63
6	M 8 x 1.25	206	207	N/A	208	209	854	17	0.67	13	0.512
7	M 8 x 1.25	206	207	N/A	208	209	854	17	0.67	13	0.512

Service Hole Location	Thread Size	Drill	Counterbore Tool	Stop Collar	Tap	Driver	Insert	Drill Depth (Max)		Tap Depth (Min)
								mm	(in)	mm	(in)
1	M 10 x 1.5	211	212	N/A	213	214	14mm length	20	0.79	16	0.63
2	M 8 x 1.25	206	207	N/A	208	209	854	17	0.67	13	0.512
3	M 8 x 1.25	206	207	N/A	208	209	854	17	0.67	13	0.512
4	M 10 x 1.5	211	212	N/A	213	214	14mm length	20	0.79	16	0.63
5	M 8 x 1.25	206	207	N/A	208	209	854	17	0.67	13	0.512
6	M 8 x 1.25	206	207	N/A	208	209	854	17	0.67	13	0.512