Chevrolet Silverado / GMC Sierra. Service manual — part 393

Engine Front Cover - 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 8 x

1.25

-206

-207

N/A

-208

-209

-210

22 0.866 17 0.669

2

M 8 x

1.25

-206

-207

N/A

-208

-209

-210

17 0.669 12 0.472

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 18: Engine Front Cover (Front View)
Courtesy of GENERAL MOTORS CORP.

Engine Front Cover - Front View

Engine Front Cover - Side 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 8 x

1.25

-206

-207

N/A

-208

-209

-210

19 0.748 15 0.591

2

M 10 x

1.5

-211

-212

N/A

-213

-214

-216

20 0.788 16 0.630

3

M 6 x

1.0

-201

-202

N/A

-203

-204

-205

14 0.551 10 0.394

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 19: Engine Front Cover (Side View)
Courtesy of GENERAL MOTORS CORP.

Engine Front Cover - Side View

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Engine Front Cover - Bottom View

Fig. 20: Engine Front Cover (Bottom View)
Courtesy of GENERAL MOTORS CORP.

Engine Front Cover - Bottom View

Lower Rocker Arm Cover - Top 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 6 x

1.0

-201

-202

N/A

-203

-204

-205

14 0.551 10 0.394

2

M 6 x

1.0

-201

-202

N/A

-203

-204

-205

THRU

10 0.394

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

17 0.669 13 0.512

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado