GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2007 🢒 Lucerne 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Disassembled Views
Figure 1:

Engine Block and Components
Object Number: 1837972 Size: MF
(1)Balance Shaft Gear Bolt
(2)Balance Shaft Driven Gear
(3)Balance Shaft Retainer Bolt
(4)Balance Shaft Retainer
(5)Balance Shaft Gear Pin
(6)Balance Shaft
(7)Balance Shaft Rear Bushing
(8)Engine Mount Strut Access Hole Plug
(9)Engine Front Cover Location Pin
(10)Engine Block
(11)Connecting Rod Bolt
(12)Connecting Rod Bearing Cap
(13)Connecting Rod Bearing
(14)Connecting Rod
(15)Piston Pin Retainer
(16)Piston Pin
(17)Piston Oil Ring
(18)Piston Compression Lower Ring
(19)Piston Compression Upper Ring
(20)Piston
(21)Crankshaft Rear Oil Seal Housing Bolt
(22)Crankshaft Rear Oil Seal Housing
(23)Crankshaft Rear Oil Seal Housing Gasket
(24)Cylinder Head Location Pin
(25)Transmission Locating Pin
(26)Starter Motor Heat Shield Bolt
(27)Starter Motor Heat Shield Bolt
(28)Oil Level Indicator
(29)Oil Level Indicator Tube Nut
(30)Oil Level Indicator Tube Seal
(31)Oil Level Indicator Tube
(32)Starter Motor Heat Shield
(33)Knock Sensor
(34)Oil Pump Screen Seal
(35)Oil Pump Screen
(36)Oil Pump Screen Bolt
(37)Engine Block Expansion Plug
(38)Engine Front Cover Location Pin
(39)Drive Belt Idler Pulley Bracket Bolt
(40)Drive Belt Idler Pulley
(41)Drive Belt Idler Pulley Bolt
(42)Drive Belt Idler Pulley Bracket
(43)Engine Block Coolant Drain Hole Plug
(44)Timing Chain Dampener
(45)Engine Block Oil Gallery Plug
(46)Camshaft Thrust Plate Bolt
(47)Crankshaft Sprocket
(48)Timing Chain
(49)Camshaft Sprocket Bolt
(50)Camshaft Position Sensor Magnet
(51)Camshaft Sprocket
(52)Balance Shaft Drive Gear
(53)Camshaft Thrust Plate
(54)Camshaft Key
(55)Camshaft
(56)Camshaft Bearing
(57)Camshaft Bearing
(58)Camshaft Bearing
(59)Engine Mount Strut Bracket Stud
(60)Engine Block Oil Gallery Plug
Figure 2:

Crankshaft and Components
Object Number: 1837974 Size: LF
(1)Engine Oil Filter Adapter
(2)Engine Oil Pressure Indicator Switch
(3)Engine Oil Filter Adapter Bolt
(4)Engine Oil Filter Adapter Gasket
(5)Engine Oil Pressure Relief Valve
(6)Camshaft Position Sensor Bolt
(7)Camshaft Position Sensor
(8)Camshaft Position Sensor Seal
(9)Oil Pump Cover
(10)Oil Pump Cover Bolt
(11)Crankshaft
(12)Crankshaft Balancer Key
(13)Crankshaft Upper No. 1, 3 and 4 Bearing
(14)Crankshaft Upper No. 2 Bearing
(15)Crankshaft Rear Oil Seal
(16)Flywheel
(17)Flywheel Bolt
(18)Crankshaft Lower No. 4 Bearing
(19)Crankshaft Lower No. 3 Bearing
(20)Crankshaft Lower No. 2 Bearing
(21)Crankshaft Lower No. 1 Bearing
(22)Crankshaft No. 1 Bearing Cap
(23)Crankshaft Bearing Cap Bolt
(24)Crankshaft Bearing Cap Bolt
(25)Crankshaft No. 2 Bearing Cap
(26)Crankshaft No. 3 Bearing Cap
(27)Crankshaft No. 4 Bearing Cap
(28)Oil Level Indicator Switch
(29)Oil Level Indicator Switch Seal
(30)Oil Pan Bolt
(31)Oil Pan Drain Plug Seal
(32)Oil Pan Drain Plug
(33)Oil Pan
(34)Oil Pan Gasket
(35)Oil Pump Gear Set
(36)Engine Front Cover Gasket
(37)Engine Front Cover
(38)Crankshaft Position Sensor
(39)Crankshaft Position Sensor Stud
(40)Crankshaft Front Oil Seal
(41)Crankshaft Position Sensor Seal
(42)Crankshaft Balancer
(43)Crankshaft Balancer Bolt
(44)Water Pump
(45)Water Pump Bolt
(46)Water Pump Pulley Bolt
(47)Water Pump Pulley
(48)Water Pump Bolt
(49)Water Pump Gasket
(50)Engine Oil Filter Bypass Valve
(51)Engine Oil Filter Fitting
(52)Engine Oil Filter
(53)Engine Oil Pressure Relief Valve Spring
(54)Engine Front Cover Stud
(55)Engine Front Cover Bolt
Figure 3:

Intake Manifold and Components
Object Number: 1837975 Size: LF
(1)Sequential Multiport Fuel Injection Fuel Rail
(2)Sequential Multiport Fuel Injection Fuel Rail Nut
(3)Fuel Injector Seal
(4)Fuel Injector Retaining Ring
(5)Sequential Multiport Fuel Injector
(6)Fuel Injector Seal
(7)EVAP Purge Valve Bolt
(8)EVAP Purge Valve
(9)EVAP Purge Valve Seal
(10)Throttle Body Bolt
(11)Throttle Body Nut
(12)Throttle Body
(13)Throttle Body Seal
(14)Throttle Body Stud
(15)Engine Coolant Bleed Valve Fitting
(16)Engine Coolant Bleed Valve
(17)Water Outlet Housing
(18)Water Outlet Housing Stud
(19)Engine Coolant Thermostat Seal
(20)Engine Coolant Manifold Bolt
(21)Engine Coolant Manifold
(22)Engine Coolant Manifold Seal
(23)Engine Coolant Temperature Sensor
(24)Lower Intake Manifold Seal
(25)Lower Intake Manifold Gasket
(26)Engine Mount Strut Bracket Nut
(27)Engine Mount Strut Bracket Bolt
(28)Engine Mount Strut Bracket
(29)Engine Mount Strut Bracket
(30)Engine Mount Strut Bracket Bolt
(31)Engine Mount Strut Bracket Bolt
(32)EVAP Purge Valve Bracket
(33)EVAP Purge Valve Bracket Bolt
(34)Lower Intake Manifold
(35)Lower Intake Manifold Bolt
(36)Lower Intake Manifold Stud
(37)Generator Brace Bracket
(38)Generator Brace Bracket Bolt
(39)Generator Brace Bracket Bolt
(40)Engine Coolant Thermostat
(41)Water Outlet Housing Bolt
(42)Upper Intake Manifold Gasket
(43)Upper Intake Manifold
(44)Positive Crankcase Ventilation Valve Seal
(45)Positive Crankcase Ventilation Valve Seal
(46)Positive Crankcase Ventilation Valve
(47)Positive Crankcase Ventilation Valve Spring
(48)Positive Crankcase Ventilation Valve Retainer
(49)MAP Sensor Seal
(50)MAP Sensor
(51)Upper Intake Manifold Bolt
(52)Upper Intake Manifold Stud
(53)Upper Intake Manifold Stud
(54)Upper Intake Manifold Bolt
(55)Vacuum Manifold Seal
(56)Vacuum Manifold
Figure 4:

Cylinder Head and Components - Left - L26
Object Number: 1837977 Size: LF
(1)Valve Lifter Guide
(2)Valve Lifter Guide Bolt
(3)Valve Lifter
(4)Valve Push Rod
(5)Valve Rocker Arm Cover Gasket
(6)Oil Filler Tube Seal
(7)Oil Filler Tube
(8)Oil Filler Cap Seal
(9)Oil Filler Cap
(10)Valve Rocker Arm Cover Bolt
(11)Valve Rocker Arm Cover Bolt Grommet
(12)Valve Rocker Arm Cover
(13)Valve Stem Key
(14)Valve Stem Cap
(15)Valve Spring
(16)Valve Stem Key
(17)Valve Stem Cap
(18)Valve Spring
(19)Valve Lifter Guide
(20)Valve Stem Oil Seal
(21)Engine Mount Strut Bracket Bolt
(22)Engine Mount Strut Bracket Bolt
(23)Engine Mount Strut Bracket
(24)Exhaust Crossover Pipe Seal
(25)Exhaust Crossover Pipe Stud
(26)Brake Booster Heat Shield
(27)Brake Booster Heat Shield Nut
(28)Exhaust Crossover Pipe Bolt
(29)Exhaust Crossover Pipe
(30)Engine Lift Bracket
(31)Engine Lift Bracket Bolt
(32)Engine Lift Bracket Nut
(33)Exhaust Manifold Head Shield
(34)Exhaust Manifold Heat Shield Nut
(35)Exhaust Manifold Nut
(36)Exhaust Manifold Bolt
(37)Exhaust Manifold Bolt
(38)Exhaust Manifold
(39)Exhaust Manifold Gasket
(40)Spark Plug
(41)Cylinder Head Bolt
(42)Exhaust Manifold Stud
(43)Exhaust Valve
(44)Intake Valve
(45)Cylinder Head Gasket
(46)Cylinder Head Core Hole Plug
(47)Cylinder Head
(48)Cylinder Head Bolt
(49)Valve Rocker Arm Retainer
(50)Valve Rocker Arm
(51)Valve Rocker Arm Bolt
(52)Spark Plug Wire Support Clip
(53)Spark Plug Wire Harness
(54)Spark Plug Heat Shield
(55)Ignition Coil
(56)Ignition Coil Stud
(57)Ignition Coil Nut
Figure 5:

Cylinder Head and Components - Left - L32
Object Number: 1837978 Size: LF
(1)Spark Plug Wire Support Bolt
(2)Spark Plug Wire Support
(3)Spark Plug Heat Shield
(4) Ignition Coil
(5)Spark Plug Wire Support Clip
(6)Spark Plug Wire Harness
(7)Valve Lifter Guide
(8)Valve Lifter Guide Bolt
(9)Valve Lifter
(10)Valve Push Rod
(11)Cylinder Head
(12)Cylinder Head Bolt
(13)Valve Rocker Arm Retainer
(14)Valve Rocker Arm
(15)Valve Rocker Arm Bolt
(16)Valve Rocker Arm Cover Gasket
(17)Valve Rocker Arm Cover
(18)Valve Rocker Arm Cover Bolt
(19)Oil Filler Tube
(20)Oil Filler Tube Seal
(21)Oil Filler Cap
(22)Valve Rocker Arm Bolt
(23)Valve Rocker Arm Cover O-ring
(24) Brake Booster Heat Shield
(25)Exhaust Crossover Pipe Stud
(26) Brake Booster Heat Shield Nut
(27)Exhaust Crossover Pipe Bolt
(28)Exhaust Crossover Pipe
(29)Valve Stem Key
(30)Valve Stem Cap
(31)Valve Spring
(32)Valve Stem Oil Seal
(33)Engine Mount Strut Bracket
(34)Engine Mount Strut Bracket Bolt
(35)Engine Mount Strut Bracket Bolt
(36)Engine Lift Bracket
(37)Engine Lift Bracket Bolt
(38)Engine Lift Bracket Nut
(39)Exhaust Manifold Head Shield
(40)Exhaust Manifold Heat Shield Nut
(41)Exhaust Manifold Nut
(42)Exhaust Manifold Stud
(43)Exhaust Manifold Bolt
(44)Exhaust Manifold
(45)Exhaust Manifold Gasket
(46)Exhaust Manifold Stud
(47)Cylinder Head Bolt
(48)Spark Plug
(49)Exhaust Valve
(50)Intake Valve
(51)Cylinder Head Core Hole Plug
(52)Cylinder Head Gasket
(53)Engine Mount Strut Bracket Stud
(54)Engine Mount Strut Bracket
(55)Drive Belt Idler Pulley
(56)Drive Belt Idler Pulley Bolt
(57)Engine Mount Strut Bracket Nut
(58)Drive Belt Tensioner Nut
(59)Drive Belt Tensioner
(60)Drive Belt Tensioner Stud
(61)Generator Brace Stud
(62)Exhaust Crossover Pipe Seal
Figure 6:

Cylinder Head and Components - Right - L26/L32
Object Number: 1837980 Size: LF
(1)Secondary Air Injection Pipe Bolt
(2)Secondary Air Injection Pipe Gasket
(3)Secondary Air Injection Valve
(4)Secondary Air Injection Hose Clamp
(5)Secondary Air Injection Hose
(6)Secondary Air Injection Hose Clamp
(7)Secondary Air Injection Pipe
(8)Secondary Air Injection Hose Clamp
(9)Secondary Air Injection Hose Clamp
(10)Secondary Air Injection Hose Clamp
(11)Exhaust Gas Recirculation Valve Nut
(12)Exhaust Gas Recirculation Valve
(13)Exhaust Gas Recirculation Valve Gasket
(14)Exhaust Gas Recirculation Valve Adapter
(15)Exhaust Gas Recirculation Valve Outlet Pipe
(16)Exhaust Gas Recirculation Valve Outlet Pipe Nut
(17)Exhaust Gas Recirculation Valve Outlet Pipe Bolt
(18)Exhaust Gas Recirculation Valve Adapter Bolt
(19)Cylinder Head
(20)Cylinder Head Gasket
(21)Valve Rocker Arm Cover Gasket
(22)Valve Rocker Arm Cover
(23)Exhaust Manifold Stud
(24)Exhaust Manifold Gasket
(25)Engine Coolant Thermostat Bypass Pipe Seal
(26)Engine Coolant Thermostat Bypass Pipe
(27)Engine Coolant Thermostat Bypass Pipe Seal
(28)Engine Coolant Thermostat Bypass Pipe Seal
(29)Engine Coolant Thermostat Bypass
(30)Engine Coolant Thermostat Bypass Pipe Seal
(31)Drive Belt Tensioner Bolt
(32)Drive Belt Tensioner
(33)Exhaust Manifold
(34)Exhaust Manifold Stud
(35)Exhaust Manifold Nut
(36)Exhaust Gas Recirculation Valve Adapter Pipe Bolt
(37)Exhaust Manifold Heat Shield
(38)Exhaust Manifold Heat Shield Bolt
(39)Engine Lift Bracket
(40)Engine Lift Bracket Nut
(41)Engine Lift Bracket Bolt
(42)Engine Sight Shield Bracket
(43)Engine Sight Shield Bracket Nut
(44)Oxygen Sensor
(45)Secondary Air Injection Pipe Gasket
(46)Secondary Air Injection Pipe Nut
(47)Secondary Air Injection Pipe
(48)Secondary Air Injection Valve Mounting Bracket Bolt
(49)Secondary Air Injection Valve Mounting Bracket
(50)Secondary Air Injection Valve Bolt