Hummer H2. Manual - part 1689

Engine Block - Rear View 

Fig. 2: Engine Block Bolt Holes - Rear View 
Courtesy of GENERAL MOTORS CORP.

1.5

215

211

213

214

11-

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

M8 x 

1.25

J 

42385-

210

J 

42385-

206

J 42385-207

J 

42385-

208

J 

42385-

209

Thru

18.0 (0.708)

15

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)

16

M8 x 

1.25

J 

42385-

210

J 

42385-

206

J 42385-207

J 

42385-

208

J 

42385-

209

Thru

18.0 (0.708)

17-

27

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)

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

  

Engine Block - Rear View 

Engine Block - Left Side 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)

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

  

Fig. 3: Engine Block Bolt Holes - Left Side View 
Courtesy of GENERAL MOTORS CORP. 

Engine Block - Left Side View 

Hole

Thread 

Size

Insert Drill

Counterbore 

Tool

Tap Driver

Drill Depth - 

Maximum mm (in)

Tap Depth - 

Maximum mm 

(in)

J 42385

1

M28 x 1.25

N/A

N/A

N/A

N/A

N/A

N/A

N/A

2

M8 x 1.25

210

206

207

208

209

28.5 (1.122)

23.0 (0.905)

3

M8 x 1.25

210

206

207

208

209

21.5 (0.846)

16.0 (0.629)

4

M10 x 1.25

215

211

212

213

214

29.0 (1.141)

23.0 (0.905)

5

M10 x 1.5

215

211

212

213

214

27.0 (1.062)

21.5 (0.846)

6

M16 x 1.5

N/A

N/A

N/A

N/A

N/A

N/A

N/A

7

M11 x 2.0 

First 

Design

108

105

N/A

106

107

124.0 (4.88)

115.0 (4.52)

7

M11 x 2.0 

Second 

Design

108

105

N/A

106

107

69.0 (2.72)

60.0 (2.36)

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

  

Engine Block - Right Side View 

Fig. 4: Engine Block Bolt Holes - Right Side View 
Courtesy of GENERAL MOTORS CORP. 

Engine Block - Right Side View 

8

M11 x 2.0

108

105

N/A

106

107

69.0 (2.72)

60.0 (2.36)

z

Bolt holes 7, second design, and 8 have a 30 mm (1.18 in) counterbore included in the 69.0 mm 
(2.72 in) drill depth. Use sleeve J 42385-315 with the drill and tap.  

z

Bolt holes 7, first design, have a 85 mm (3.34 in) counterbore included in the 124.0 mm (4.88 in) 
drill depth.  

Hole

Thread 

Size

Insert Drill

Counterbore 

Tool

Tap Driver

Drill Depth - 

Maximum mm (in)

Tap Depth - 

Maximum mm 

(in)

J 42385

1

M28 x 1.25

210

206

207

208

209

22.5 (0.885)

17.5 (0.688)

2

M8 x 1.25

210

206

207

208

209

26.5 (1.04)

19.0 (0.784)

3

M11 x 2.0

108

105

N/A

106

107

69.0 (2.72)

60.0 (2.36)

4

M10 x 1.25

215

211

212

213

214

29.0 (1.141)

23.0 (0.905)

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2