GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2005 🢒 Envoy - 4WD 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 Disassembled Views
Figure 1:

Intake Manifold/Upper Engine
Object Number: 1401941 Size: LF
(100)Engine Block
(307)Engine Coolant Air Bleed Pipe
(308)Seal
(308)Seal
(309)Bolt
(312)Bolt
(313)Engine Coolant Air Bleed Cover
(451)Valve Lifter Oil Manifold
(452)Valve Lifter Oil Filter
(454)O-Ring
(500)Intake Manifold
(506)Bolt
(507)Nut
(508)Throttle Body
(509)Throttle Body Gasket
(510)Fuel Rail with Injectors
(511)Bolt
(512)Bolt
(513)Seal
(514)Intake Manifold Gasket
(538)Bolt
(556)Valve Lifter Oil Manifold Gasket
(706)Oil Pressure Sensor
(707)Washer
(712)Fuel Rail Stop Bracket
(713)Bolt
(714)Manifold Absolute Pressure (MAP) Sensor
(715)O-Ring
(729)Evaporative Emission (EVAP) Canister Purge Tube
(730)EVAP Canister Purge Solenoid Valve
(731)Cap
(733)Label
(734)Service Valve
(735)EVAP Canister Purge Tube
(736)MAP Sensor Retainer
Figure 2:

Cylinder Head/Upper Engine
Object Number: 1401943 Size: LF
(100)Engine Block
(209)Valve Lifter - Non Displacement-on-Demand
(210)Valve Lifter Guide
(211)Bolt
(212)Pushrod
(213)Valve Rocker Arm
(214)Bolt
(215)Valve Rocker Arm Pivot Support
(216)Core Hole Plug
(217)Cylinder Head Gasket
(218)Cylinder Head
(219)Valve Lifter - Displacement-on-Demand
(220)Bolt - M11
(221)Bolt - M8
(222)Valve Stem Oil Seal
(223)Valve Spring
(224)Valve Spring Cap
(225)Valve Stem Key
(226)Core Hole Plug
(227)Intake Valve
(228)Exhaust Valve
(229)Cylinder Head Plug
(230)Cylinder Head Locating Pin
(422)Oil Fill Tube O-Ring
(423)Oil Fill Tube
(424)Oil Fill Cap
(450)Oil Fill Cap O-Ring
(504)Valve Cover Gasket
(504)Valve Cover Gasket
(505)Valve Cover
(505)Valve Cover
(515)Valve Cover Bolt Grommet
(516)Bolt
(600)Exhaust Manifold
(601)Exhaust Manifold Gasket
(602)Bolt
(603)Exhaust Manifold Heat Shield
(604)Bolt
(605)Stud
(700)Positive Crankcase Ventilation (PCV) Hose - Fresh Air
(716)PCV Hose - Dirty Air
(719)Ignition Coil Bracket
(720)Stud
(721)Ignition Coil Wire Harness
(722)Ignition Coil
(723)Bolt
(724)Spark Plug Wire
(725)Coolant Temperature Sensor
(726)Spark Plug
Figure 3:

Front of Engine
Object Number: 1401944 Size: LF
(100)Engine Block
(138)Crankshaft Balancer
(139)Bolt
(140)Crankshaft Front Oil Seal
(200)Camshaft
(201)Camshaft Bearings
(202)Camshaft Sprocket Locating Pin
(203)Camshaft Retainer Plate
(204)Bolt
(205)Camshaft Sprocket
(206)Bolt
(207)Crankshaft Sprocket
(208)Timing Chain
(231)Bolt
(232)Timing Chain Dampener
(300)Water Pump
(301)Bolt
(302)Bolt
(303)Water Inlet Housing
(304)O-Ring
(305)Thermostat
(306)Water Pump Gasket
(404)Nut
(405)Bolt
(406)O-Ring
(407)Oil Pump Screen
(408)Bolt
(409)Oil Pump Housing Cover
(410)Oil Pump Drive Gear
(411)Bolt
(412)Oil Pump Driven Gear
(413)Oil Pump
(414)Oil Pump Pressure Relief Valve
(415)Oil Pump Pressure Relief Valve Spring
(416)Oil Pump Housing Plug
(417)O-Ring
(418)Oil Level Indicator
(419)Bolt
(420)Oil Level Indicator Tube
(421)O-Ring
(501)Bolt
(502)Engine Front Cover
(503)Engine Front Cover Gasket
(703)Camshaft Position (CMP) Sensor
(704)O-Ring
(705)Bolt
(737)CMP Sensor Wire Harness
(738)Bolt
Figure 4:

Rear of Engine
Object Number: 1401946 Size: LF
(100)Engine Block
(132)Flex Plate - Automatic Transmission
(133)Bolt
(141)Crankshaft Rear Oil Seal
(517)Bolt
(518)Crankshaft Rear Oil Seal Housing
(519)Crankshaft Rear Oil Seal Housing Gasket
Figure 5:

Lower Engine Assembly
Object Number: 1401948 Size: LF
(100)Engine Block
(102)Bolt
(103)Connecting Rod Cap
(104)Connecting Rod Bearings
(105)Connecting Rod
(106)Piston Pin
(107)Piston
(108)Piston Rings
(109)Retainer
(120)Crankshaft Thrust Bearing
(120)Crankshaft Thrust Bearing
(121)Crankshaft Main Bearing
(121)Crankshaft Main Bearing
(122)Crankshaft Sprocket Key
(124)Crankshaft
(126)Crankshaft Bearing Cap
(127)Bolt - M8
(128)Stud - M10
(129)Bolt - M10
(400)Oil Pan
(401)Cover - Right
(402)Bolt
(403)Nut
(404)Nut
(405)Bolt
(406)O-Ring
(407)Oil Pump Screen
(425)Crankshaft Oil Deflector
(426)Oil Pan Gasket
(427)Bolt
(428)Oil Pan Baffle
(429)O-Ring
(430)Oil Pan Drain Plug
(431)Cover - Left
(432)Bolt
(434)Bolt
(436)Oil Filter Bypass Valve
(437)Oil Filter
(438)Oil Filter Fitting
(439)Bolt
(445)Oil Filter Tube Gasket
(446)Bolt
(447)Oil Filter Tube
(448)Oil Filter Tube Gasket
(449)Plug
(453)Bolt
(455)Oil Pressure Relief Valve
Figure 6:

Engine Block Plugs/Sensors
Object Number: 1891921 Size: LF
(100)Engine Block
(100)Engine Block
(101)Oil Gallery Plug - Front
(102)Cup Plug
(110)O-Ring
(111)Oil Gallery Plug - Rear
(112)Oil Gallery Plug - Side
(113)Washer
(114)Engine Coolant Heater
(115)Washer
(116)Oil Gallery Plug - Side
(117)Washer
(130)Transmission Housing Locating Pin
(145)Washer
(146)Engine Block Coolant Drain Hole Plug
(701)Crankshaft Position (CKP) Sensor
(702)O-Ring
(718)Knock Sensor
(718)Knock Sensor
(739)Bolt
(739)Bolt
(750)CKP Sensor Bolt
Figure 7:

Oil Pump Assembly
Object Number: 1272779 Size: SF
(408)Bolt
(409)Oil Pump Housing Cover
(410)Oil Pump Drive Gear
(412)Oil Pump Driven Gear
(413)Oil Pump
(414)Oil Pump Pressure Relief Valve
(415)Oil Pump Pressure Relief Valve Spring
(416)Oil Pump Housing Plug