Chevrolet Silverado / GMC Sierra. Service manual — part 390

Fig. 7: Intake Manifold (Right Side View)
Courtesy of GENERAL MOTORS CORP.

Intake Manifold - Right Side View

Intake Manifold - Left 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

-415

16 0.630 13 0.512

2

M 8 x

1.25

-206

-207

N/A -208 -209

-210

THRU

THRU

3

M 6 x

1.0

-201

-202

N/A -203 -204

-205

16 0.0630 12 0.472

2008 Chevrolet Silverado 1500

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

Fig. 8: Intake Manifold (Left Side View)
Courtesy of GENERAL MOTORS CORP.

Intake Manifold - Left Side View

Oil Cooler

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

THRU

THRU

2

M 6 x

1.0

-201

-202

N/A

-203

-204

-205

14 0.551 11 0.433

3

M 6 x

1.0

-201

-202

N/A

-203

-204

-205

16 0.630 12 0.472

2008 Chevrolet Silverado 1500

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

Fig. 9: View Of Oil Cooler
Courtesy of GENERAL MOTORS CORP.

Oil Cooler

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 0.827 17 0.669

2

M 8 x

1.25

-206

-207

N/A

-208

-209

-210

THRU

THRU

2008 Chevrolet Silverado 1500

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

EGR Cooler - Rear View

Fig. 10: EGR Cooler (Rear View)
Courtesy of GENERAL MOTORS CORP.

EGR Cooler - Rear View

EGR Cooler - 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

THRU

THRU

2008 Chevrolet Silverado 1500

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