Chevrolet Silverado / GMC Sierra. Service manual — part 391

Fig. 11: EGR Cooler (Front View)
Courtesy of GENERAL MOTORS CORP.

EGR Cooler - Front View

Service

Hole

Thread

Counterbore Stop

Drill

Depth
(Max)

Tap

Depth

(Min)

2008 Chevrolet Silverado 1500

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

EGR - Top View

Fig. 12: EGR (Top View)

Location

Size

Drill

Tool

Collar Tap Driver Insert 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

Courtesy of GENERAL MOTORS CORP.

EGR - Top View

Thermostat Housing - Top View

Fig. 13: Thermostat Housing (Top View)
Courtesy of GENERAL MOTORS CORP.

Thermostat Housing - 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 8 x

1.25

-206

-207

N/A

-208

-209

-210

THRU

THRU

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

3

NPT 3/8 -2013

N/A

N/A

-294 -2015 -2016

THRU

THRU

4

M 8 x

1.25

-206

-207

N/A

-208

-209

-210

19 0.748 15 0.591

2008 Chevrolet Silverado 1500

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

AC Bracket

Fig. 14: View Of AC Bracket
Courtesy of GENERAL MOTORS CORP.

AC Bracket

Generator Bracket - 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

-420

30 1.182 25 0.985

2008 Chevrolet Silverado 1500

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