Chevrolet Silverado / GMC Sierra. 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