GM Service Manual Online
For 1990-2009 cars only

Disassembled Views L56, L65

Figure 1:

Cylinder Head and Components


Object Number: 74101  Size: LF
(1)Upper Intake Manifold Bolt
(2)Exhaust Gas Recirculation (EGR) Valve (If Equipped)
(3)EGR Gasket (If Equipped)
(4)Upper Intake Manifold Bolt
(5)Upper Intake Manifold
(6)Gasket
(7)EGR Gasket (If Equipped)
(8)Stud
(9)Bolt
(10)Lower Intake Manifold
(11)Bolt
(12)Valve Rocker Arm Cover
(13)Stud
(14)Bolt
(15)Valve Rocker Arm Shaft Bolt
(16)Valve Rocker Arm Shaft Retainer
(17)Valve Rocker Arm Shaft Assembly
(18)Valve Stem Key
(19)Exhaust Valve Rotator
(20)Exhaust Valve Seal
(21)Valve Spring
(22)Cylinder Head
(23)Cylinder Head Gasket
(24)Coolant Jacket Plug
(25)Exhaust Valve
(26)Cylinder Head Pre-Combustion Chamber
(27)Intake Valve
(28)Valve Lifter
(29)Valve Lifter Guide Plate
(30)Push Rod
(31)Valve Lifter Guide Plate Clamp
(32)Cylinder Head Bolt
(33)Valve Rocker Arm Shaft
(34)Valve Rocker Arm
(35)Valve Rocker Arm Retainer
(36)Bolt
(37)Stud
(38)Coolant Jacket Cover
(39)Gasket
(40)Exhaust Manifold (Right)
(41)Exhaust Manifold Bolt
(41)Exhaust Manifold Bolt
(42)Oil Level Indicator Tube Heat Shield
(43)Bolt
(43)Bolt
(44)Accessory Mounting/Lift Bracket
(45)Thermostat Housing (Lower)
(46)Engine Coolant Temprature (ECT) Sensor
(47)Stud
(48)Thermostat Seal
(49)Thermostat
(50)Thermostat Housing (Upper)
(51)Bolt
(52)Gasket
(53)Bolt
(54)Coolant Bypass Hose Nipple
(55)Exhaust Manifold Studs
(56)Exhaust Manifold Bolts
(57)Exhaust Manifold (Right)
(58)Bolt
(59)Gasket
(60)Turbocharger Oil Return Pipe
(61)Clamp
(62)Gasket
(63)Turbocharger Oil Return Pipe Adapter
(64)Bolt
(65)Hose
(66)Valve Rocker Arm Cover to CDR Valve Grommet
(67)Crankcase Depression Regulator (CDR) Valve
(68)Clamp
(69)Hose
(70)Turbocharger Assembly
(71)Turbocharger Brace (Long)
(72)Bolt
(73)Turbocharger Oil Feed Line
(74)Clamp
(75)Hose
(76)Turbocharger Brace (Short)
(77)Bolt
(78)Clamp
Figure 2:

Cylinder Block and Components


Object Number: 67734  Size: LF
(1)Oil Pump Drive
(2)Oil Pump Drive Gasket
(3)Bolt
(4)Oil Pump Drive Clamp
(5)Bolt
(6)Fuel Drain Tube (If Equipped)
(7)Oil Gallery Plug
(7)Oil Gallery Plug
(7)Oil Gallery Plug
(7)Oil Gallery Plug
(7)Oil Gallery Plug
(7)Oil Gallery Plug
(8)Camshaft Plug
(9)Oil Cooler Bypass Valve
(10)Oil Filter Bypass Valve
(11)Cup Plug
(12)Oil Filter Attachment Fitting
(12)Oil Filter Attachment Fitting
(13)Oil Filter
(13)Oil Filter
(14)Gasket
(15)Oil Filter Adapter (If Equipped)
(16)Oil Filter Adapter Seal (If Equipped)
(17)Oil Filter Adapter Gasket (If Equipped)
(18)Oil Filter Adapter Bolt (If Equipped)
(19)Coolant Jacket Plug
(20)Connecting Rod Nut
(21)Connecting Rod Bearing Cap
(22)Connecting Rod Bearing
(23)Flywheel Bolt
(24)Retainer (If Equipped)
(25)Flywheel
(26)Crankshaft Rear Oil Seal (One Piece)
(27)Clutch Pilot Bearing (If Equipped)
(28)Flywheel Dowel Pin
(29)Crankshaft Rear Bearing Cap
(30)Crankshaft Bearing Cap Bolt
(31)Crankshaft Bearing Cap
(31)Crankshaft Bearing Cap
(32)Crankshaft Thrust Bearing Cap
(33)Crankshaft Bearing
(33)Crankshaft Bearing
(34)Crankshaft Thrust Bearing
(35)Crankshaft
(36)Crankshaft Sprocket (and Reluctor Wheel)
(37)Crankshaft Timing Chain
(38)Crankshaft Sprocket Key
(39)Crankshaft Bearing
(39)Crankshaft Bearing
(40)Crankshaft Thrust Bearing
(41)Camshaft Bolt
(42)Camshaft Washer
(43)Fuel Injection Pump Drive Gear
(44)Camshaft Sprocket
(45)Bolt
(46)Camshaft Thrust Bearing
(47)Camshaft Sprocket Key
(48)Camshaft Sprocket Spacer Ring
(49)Camshaft
(50)Piston Pin Retainer
(51)Piston and Pin
(52)Piston Compression (Fire) Ring (Keystone Ring)
(53)Piston Compression Ring (2nd Ring)
(54)Piston Oil Ring
(55)Connecting Rod
(56)Connecting Rod Bolt
(57)Oil Pressure Sensor Switch
(58)Block
Figure 3:

Front Cover, Oil Pan, and Components


Object Number: 67735  Size: LF
(1)Oil Pump
(2)Oil Pump Drive Shaft
(3)Oil Pump Pressure Relief Spring
(4)Oil Pump Bolt
(5)Oil Pump Pick Up Tube and Screen
(6)Rear Oil Pan Seal
(7)Bolt
(8)Oil Pan
(9)Oil Pan Drain Plug
(10)Bolt
(11)Stud
(12)Oil Cooler Pipe Clip
(13)Front Cover
(14)Crankshaft Front Oil Seal
(15)Bolt
(16)Water Pump Backing Plate
(17)Gasket
(18)Torsional Damper
(19)Torsional Damper Washer
(20)Torsional Damper Bolt
(21)Water Pump and Backing Plate Bolt
(22)Water Pump and Backing Plate Stud
(23)Bolt
(24)Water Pump
(25)Coolant Bypass Nipple
(26)Clamp
(27)Hose
(28)Clamp
(29)Oil Fill Tube
(30)Oil Filler Cap
(31)Oil Fill Tube Grommet
(32)Clamp
(33)Stud
(34)Bolt
(35)Fuel Injection Pump Driven Gear Bolt
(36)Fuel Injection Pump Driven Gear
(37)Bolt
(38)Fuel Injection Pump Mounting Stud
(39)Fuel Injection Pump Retaining Nut
Figure 4:

Fuel Systems Components


Object Number: 67731  Size: LF
(1)Fuel Injection Pipe Clamp
(1)Fuel Injection Pipe Clamp
(1)Fuel Injection Pipe Clamp
(1)Fuel Injection Pipe Clamp
(2)Fuel Injection Pipe One Piece Clip
(2)Fuel Injection Pipe One Piece Clip
(2)Fuel Injection Pipe One Piece Clip
(3)Fuel Injection Pipe Clamp
(3)Fuel Injection Pipe Clamp
(4)Fuel Injection Pipe
(5)Fuel Injection Pipe
(6)Fuel Injection Pipe
(7)Fuel Injection Pipe
(8)Fuel Injection Pipe
(9)Fuel Injection Pipe
(10)Fuel Injection Pipe Bracket
(10)Fuel Injection Pipe Bracket
(11)Fuel Injection Nozzle Cap
(12)Clamp
(13)Hose
(13)Hose
(14)Fuel Injection Nozzle
(15)Gasket
(16)Hose
(16)Hose
(16)Hose
(16)Hose
(17)Clamp
(17)Clamp
(18)Fuel Drain Back Pipe (If Equipped)
(19)Fuel Drain Back Pipe (If Equipped)
(20)Fuel Injection Pump
(21)Gasket
(22)Fuel Drain Back Pipe Clip
(23)Fuel Drain Back Pipe (If Equipped)
(24)Fuel Drain Back Pipe (If Equipped)
(25)Fuel Water Separator Valve

Disassembled Views L57

Figure 1:

Cylinder Head and Components


Object Number: 205743  Size: LF
(1)Valve Rocker Arm Cover to CDR Valve Grommet
(2)Crankcase Depression Regulator (CDR) Valve
(3)Clamp
(4)Hose
(5)Intake Manifold
(6)Stud
(7)Bolt
(8)Intake Manifold Gasket
(9)Valve Rocker Arm Cover
(10)Stud
(11)Bolt
(12)Exhaust Manifold
(13)Exhaust Manifold Bolt
(13)Exhaust Manifold Bolt
(14)Oil Level Indicator Tube Heat Shield
(15)Valve Rocker Arm Shaft Bolt
(16)Valve Rocker Arm Shaft Retainer
(17)Valve Rocker Arm Shaft Assembly
(18)Valve Stem Key
(19)Exhaust Valve Rotator
(20)Exhaust Valve Seal
(21)Valve Spring
(22)Cylinder Head
(23)Cylinder Head Gasket
(24)Coolant Jacket Plug
(25)Exhaust Valve
(26)Cylinder Head Pre-Combustion Chamber
(27)Intake Valve
(28)Valve Lifter
(29)Valve Lifter Guide Plate
(30)Push Rod
(31)Valve Lifter Guide Plate Clamp
(32)Cylinder Head Bolt
(33)Valve Rocker Arm Shaft
(34)Valve Rocker Arm
(35)Valve Rocker Arm Retainer
(36)Bolt
(37)Stud
(38)Coolant Jacket Cover
(39)Gasket
(40)Bolt
(40)Bolt
(41)Accessory Mounting/Lift Bracket
(42)Thermostat Housing (Lower)
(43)Stud
(44)Bolt
(45)Stud
(46)Bolt
(47)Stud
(4048)Thermostat Housing (Upper)
(49)Gasket
(50)Thermostat
Figure 2:

Cylinder Block and Components


Object Number: 67734  Size: LF
(1)Oil Pump Drive
(2)Oil Pump Drive Gasket
(3)Bolt
(4)Oil Pump Drive Clamp
(5)Bolt
(6)Fuel Drain Tube (If Equipped)
(7)Oil Gallery Plug
(7)Oil Gallery Plug
(7)Oil Gallery Plug
(7)Oil Gallery Plug
(7)Oil Gallery Plug
(7)Oil Gallery Plug
(8)Camshaft Plug
(9)Oil Cooler Bypass Valve
(10)Oil Filter Bypass Valve
(11)Cup Plug
(12)Oil Filter Attachment Fitting
(12)Oil Filter Attachment Fitting
(13)Oil Filter
(13)Oil Filter
(14)Gasket
(15)Oil Filter Adapter (If Equipped)
(16)Oil Filter Adapter Seal (If Equipped)
(17)Oil Filter Adapter Gasket (If Equipped)
(18)Oil Filter Adapter Bolt (If Equipped)
(19)Coolant Jacket Plug
(20)Connecting Rod Nut
(21)Connecting Rod Bearing Cap
(22)Connecting Rod Bearing
(23)Flywheel Bolt
(24)Retainer (If Equipped)
(25)Flywheel
(26)Crankshaft Rear Oil Seal (One Piece)
(27)Clutch Pilot Bearing (If Equipped)
(28)Flywheel Dowel Pin
(29)Crankshaft Rear Bearing Cap
(30)Crankshaft Bearing Cap Bolt
(31)Crankshaft Bearing Cap
(31)Crankshaft Bearing Cap
(32)Crankshaft Thrust Bearing Cap
(33)Crankshaft Bearing
(33)Crankshaft Bearing
(34)Crankshaft Thrust Bearing
(35)Crankshaft
(36)Crankshaft Sprocket (and Reluctor Wheel)
(37)Crankshaft Timing Chain
(38)Crankshaft Sprocket Key
(39)Crankshaft Bearing
(39)Crankshaft Bearing
(40)Crankshaft Thrust Bearing
(41)Camshaft Bolt
(42)Camshaft Washer
(43)Fuel Injection Pump Drive Gear
(44)Camshaft Sprocket
(45)Bolt
(46)Camshaft Thrust Bearing
(47)Camshaft Sprocket Key
(48)Camshaft Sprocket Spacer Ring
(49)Camshaft
(50)Piston Pin Retainer
(51)Piston and Pin
(52)Piston Compression (Fire) Ring (Keystone Ring)
(53)Piston Compression Ring (2nd Ring)
(54)Piston Oil Ring
(55)Connecting Rod
(56)Connecting Rod Bolt
(57)Oil Pressure Sensor Switch
(58)Block
Figure 3:

Front Cover, Oil Pan, and Components


Object Number: 67735  Size: LF
(1)Oil Pump
(2)Oil Pump Drive Shaft
(3)Oil Pump Pressure Relief Spring
(4)Oil Pump Bolt
(5)Oil Pump Pick Up Tube and Screen
(6)Rear Oil Pan Seal
(7)Bolt
(8)Oil Pan
(9)Oil Pan Drain Plug
(10)Bolt
(11)Stud
(12)Oil Cooler Pipe Clip
(13)Front Cover
(14)Crankshaft Front Oil Seal
(15)Bolt
(16)Water Pump Backing Plate
(17)Gasket
(18)Torsional Damper
(19)Torsional Damper Washer
(20)Torsional Damper Bolt
(21)Water Pump and Backing Plate Bolt
(22)Water Pump and Backing Plate Stud
(23)Bolt
(24)Water Pump
(25)Coolant Bypass Nipple
(26)Clamp
(27)Hose
(28)Clamp
(29)Oil Fill Tube
(30)Oil Filler Cap
(31)Oil Fill Tube Grommet
(32)Clamp
(33)Stud
(34)Bolt
(35)Fuel Injection Pump Driven Gear Bolt
(36)Fuel Injection Pump Driven Gear
(37)Bolt
(38)Fuel Injection Pump Mounting Stud
(39)Fuel Injection Pump Retaining Nut
Figure 4:

Fuel Systems Components


Object Number: 67731  Size: LF
(1)Fuel Injection Pipe Clamp
(1)Fuel Injection Pipe Clamp
(1)Fuel Injection Pipe Clamp
(1)Fuel Injection Pipe Clamp
(2)Fuel Injection Pipe One Piece Clip
(2)Fuel Injection Pipe One Piece Clip
(2)Fuel Injection Pipe One Piece Clip
(3)Fuel Injection Pipe Clamp
(3)Fuel Injection Pipe Clamp
(4)Fuel Injection Pipe
(5)Fuel Injection Pipe
(6)Fuel Injection Pipe
(7)Fuel Injection Pipe
(8)Fuel Injection Pipe
(9)Fuel Injection Pipe
(10)Fuel Injection Pipe Bracket
(10)Fuel Injection Pipe Bracket
(11)Fuel Injection Nozzle Cap
(12)Clamp
(13)Hose
(13)Hose
(14)Fuel Injection Nozzle
(15)Gasket
(16)Hose
(16)Hose
(16)Hose
(16)Hose
(17)Clamp
(17)Clamp
(18)Fuel Drain Back Pipe (If Equipped)
(19)Fuel Drain Back Pipe (If Equipped)
(20)Fuel Injection Pump
(21)Gasket
(22)Fuel Drain Back Pipe Clip
(23)Fuel Drain Back Pipe (If Equipped)
(24)Fuel Drain Back Pipe (If Equipped)
(25)Fuel Water Separator Valve