Chevrolet Silverado / GMC Sierra. Service manual — part 1869

Engine Block - Left/Right Side Views

Fig. 2: Engine Block - Left/Right Side Views
Courtesy of GENERAL MOTORS CORP.

Engine Block - Left/Right Side Views

Hole

Thread

Size

Insert

Drill

Counterbore

Tool

Tap

Driver

Drill

Depth -

Maximum

mm (in)

Tap Depth

-

Maximum

mm (in)

J 42385-

1

M8 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

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

108

105

N/A

106

107

69.0 (2.72) 60.0 (2.36)

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Engine Block - Top/Bottom Views

Fig. 3: Engine Block - Top/Bottom Views
Courtesy of GENERAL MOTORS CORP.

Engine Block - Top/Bottom Views

8

M28 x

1.25

N/A

N/A

N/A

N/A

N/A

N/A

N/A

Bolt hole 7 has 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.

Hole

Thread

Size

Insert

Drill

Counterbore

Tool

Tap

Driver

Drill

Depth -

Maximum

mm (in)

Tap Depth

-

Maximum

mm (in)

J 42385-

1

M8 x

1.25

210

206

207

208

209

22.5

(0.885)

17.5

(0.688)

2

M10 x

1.5

215

211

212

213

214

42.5 (1.67) 37.0 (1.45)

3

M10 x

2.0

104

101

N/A

102

103

31.0 (1.22) 25.5 (1.0)

4

M10 x

104

101

N/A

102

103

53.5 (2.10) 44.0 (1.73)

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Cylinder Head - Top/End Views

Fig. 4: Cylinder Head - Top/End Views
Courtesy of GENERAL MOTORS CORP.

Cylinder Head - Top/End Views

2.0

5

M8 x

1.25

210

206

207

208

209

26.5

(1.043)

19.0

(0.748)

Bolt hole 2 has an 11.5 mm (0.452 in) counterbore included in the 42.5 mm (1.67 in)
drill depth. Use sleeve J 42385-311 with the drill and tap.

Bolt hole 3 has a 1.5 mm (0.059 in) counterbore included in the 31.0 mm (1.22 in)
drill depth. Use sleeve J 42385-316 with the drill and tap.

Bolt hole 4 has a 20.5 mm (0.807 in) counterbore included in the 53.5 mm (2.10 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

M8 x

1.25

210

206

207

208

209

26.5 (1.04)

19.0

(0.784)

2

M6 x

1.0

205

201

202

203

204

20.05

(0.789)

16.05

(0.632)

3

M10 x

215

211

212

213

214

28.0 (1.10)

20.0

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Cylinder Head - Intake/Exhaust Side Views

Fig. 5: Cylinder Head - Intake/Exhaust Side Views
Courtesy of GENERAL MOTORS CORP.

Cylinder Head - Intake/Exhaust Side Views

1.5

(0.787)

4

M6 x

1.0

205

201

202

203

204

22.5

(0.885)

15.0

(0.688)

Hole

Thread

Size

Insert

Drill

Counterbore

Tool

Tap

Driver

Drill

Depth -

Maximum

mm (in)

Tap Depth

-

Maximum

mm (in)

J 42385-

1

M6 x

1.0

205

201

202

203

204

Thru

Thru

2

M10 x

1.5

215

211

212

213

214

28.0 (1.10)

20.0

(0.787)

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado