GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 TrailBlazer - 4WD 🢒 Engine 🢒 Engine Controls - 4.8L, 5.3L, and 6.0L 🢒 Disassembled Views
Figure 1:

Intake Manifold/Upper Engine
Object Number: 1332927 Size: LF
(307)Engine Coolant Air Bleed Pipe
(308)Engine Coolant Air Bleed Pipe/Cover Gasket
(308)Engine Coolant Air Bleed Pipe/Cover Gasket
(309)Engine Coolant Air Bleed Pipe Bolt
(310)Engine Coolant Air Bleed Hose Clamp
(311)Engine Coolant Air Bleed Hose
(312)Engine Coolant Air Bleed Cover Bolt
(313)Engine Coolant Air Bleed Cover
(500)Intake Manifold
(506)Valley Cover Bolt
(507)Throttle Body Nut
(508)Throttle Body
(509)Throttle Body Gasket
(510)Fuel Rail with Injectors
(511)Fuel Rail Bolt
(512)Intake Manifold Bolt
(513)Intake Manifold Insulator
(514)Intake Manifold Gasket
(520)Knock Sensor Oil Seals
(555)Valley Cover
(556)Valley Cover Gasket
(708)Evaporative Emission (EVAP) Purge Valve
(709)EVAP Purge Valve Isolator
(710)EVAP Purge Valve Bolt
(712)Fuel Rail Stop Bracket
(713)Fuel Rail Stop Bracket Bolt
(714)Manifold Absolute Pressure (MAP) Sensor
(715)MAP Sensor Grommet
(716)Positive Crankcase Ventilation (PCV) Hose - Dirty Air
(717)Knock Sensor Wire Harness
(718)Knock Sensor
(729)EVAP Purge Valve O-Ring
Figure 2:

Cylinder Head/Upper Engine
Object Number: 1332930 Size: LF
(209)Valve Lifter
(210)Valve Lifter Guide
(211)Valve Lifter Guide Bolt
(212)Pushrod
(213)Rocker Arm
(214)Rocker Arm Bolt
(215)Rocker Arm Pedestal
(216)Expansion Plug
(217)Cylinder Head Gasket
(218)Cylinder Head
(219)Cylinder Head Bolt - M8 Short
(220)Cylinder Head Bolt - M11 Medium
(221)Cylinder Head Bolt - M11 Long - First Design
(222)Valve Stem Oil Seal
(222)Valve Stem Oil Seal
(223)Valve Spring
(223)Valve Spring
(224)Valve Spring Cap
(224)Valve Spring Cap
(225)Valve Stem Key
(226)Expansion Plug
(227)Intake Valve
(228)Exhaust Valve
(229)Cylinder Head Coolant 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)Valve Cover Bolt
(600)Exhaust Manifold
(601)Exhaust Manifold Gasket
(602)Exhaust Manifold Bolt
(603)Exhaust Manifold Heat Shield
(604)Exhaust Manifold Heat Shield Bolt
(700)Positive Crankcase Ventilation (PCV) Hose - Fresh Air
(719)Ignition Coils and Bracket Assembly
(720)Ignition Coil and Bracket Assembly Bolt
(721)Ignition Coil Wire Harness
(722)Ignition Coil
(723)Ignition Coil Bolt
(724)Spark Plug Wire
(725)Coolant Temperature Sensor
(726)Spark Plug
Figure 3:

Front of Engine
Object Number: 1332932 Size: LF
(100)Engine Block
(138)Crankshaft Balancer
(139)Crankshaft Balancer Bolt
(140)Crankshaft Front Oil Seal
(200)Camshaft
(201)Camshaft Bearings
(202)Camshaft Sprocket Locating Pin
(203)Camshaft Retainer Plate
(204)Camshaft Retainer Plate Bolt
(205)Camshaft Sprocket
(206)Camshaft Sprocket Bolt
(207)Crankshaft Sprocket
(208)Timing Chain
(300)Water Pump
(301)Water Pump Bolt
(302)Thermostat Housing Bolt
(303)Thermostat Housing
(304)O-Ring
(305)Thermostat
(306)Water Pump Gasket
(404)Crankshaft Oil Deflector Nut
(405)Oil Pump Screen Bolt
(406)Oil Pump Screen O-Ring
(407)Oil Pump Screen
(408)Oil Pump Cover Bolt
(409)Oil Pump Cover
(410)Drive Gear
(411)Oil Pump Bolt
(412)Driven Gear
(413)Oil Pump Assembly
(414)Pressure Relief Valve
(415)Pressure Relief Valve Spring
(416)Plug
(417)Oil Level Indicator O-Ring
(418)Oil Level Indicator
(419)Oil Level Indicator Tube Bolt
(420)Oil Level Indicator Tube
(421)Oil Level Indicator Tube O-Ring
(501)Front Cover Bolt
(502)Front Cover
(503)Front Cover Gasket
Figure 4:

Rear of Engine
Object Number: 1332939 Size: LF
(100)Engine Block
(132)Flywheel
(133)Flywheel Bolt
(141)Crankshaft Rear Oil Seal
(517)Rear Cover Bolt
(518)Rear Cover
(519)Rear Cover Gasket
Figure 5:

Lower Engine Assembly
Object Number: 1332942 Size: LF
(100)Engine Block
(102)Connecting Rod Bolt
(103)Connecting Rod Cap
(104)Connecting Rod Bearings
(105)Connecting Rod
(106)Piston Pin
(107)Piston
(108)Piston Rings
(120)Crankshaft Thrust Bearing
(120)Crankshaft Thrust Bearing
(121)Crankshaft Main Bearing
(121)Crankshaft Main Bearing
(122)Crankshaft Sprocket Key
(124)Crankshaft
(126)Bearing Cap
(127)Bearing Cap Side Bolt
(128)Bearing Cap Bolt/Stud
(129)Bearing Cap Bolt
(400)Oil Pan
(401)Closeout Cover - Right
(402)Closeout Cover Bolt - Right
(403)Crankshaft Oil Deflector Nut
(425)Crankshaft Oil Deflector
(426)Oil Pan Gasket
(427)Oil Pan Baffle Bolt
(428)Oil Pan Baffle
(429)Oil Pan Drain Plug O-Ring
(430)Oil Pan Drain Plug
(431)Closeout Cover - Left
(432)Closeout Cover Bolt - Left
(435)Oil Transfer Tube Bolts
(436)Pressure Relief Valve
(437)Oil Filter
(438)Oil Filter Fitting
(439)Oil Pan Bolt
(445)Oil Transfer Tube Gasket
(446)Oil Transfer Tube Bolts
(447)Oil Transfer Tube
(448)Oil Transfer Tube Gasket
(449)Oil Pan Oil Gallery Plugs
(700)Crankshaft Position Sensor Bolt
(701)Crankshaft Position Sensor
(702)Crankshaft Position Sensor O-Ring
(727)Oil Level Sensor
(728)Oil Level Sensor O-Ring
Figure 6:

Engine Block Plugs/Sensors
Object Number: 1276784 Size: LF
(100)Engine Block
(101)Oil Gallery Plug - Front
(110)O-Ring
(110)O-Ring
(111)Oil Gallery Plug - Rear
(111)Oil Gallery Plug - Rear
(112)Oil Gallery Plug - Side
(113)Washer
(114)Engine Block Coolant Heater
(115)Washer
(116)Oil Gallery Plug - Side
(117)Washer
(130)Transmission Housing Locating Pin
(145)Washer
(146)Coolant Drain Hole Plug - Right
(700)Crankshaft Position (CKP) Sensor Bolt
(701)CKP Sensor
(702)CKP Sensor O-Ring
(703)Camshaft Position (CMP) Sensor
(704)CMP Sensor O-Ring
(705)CMP Sensor Bolt
(706)Oil Pressure Sensor
(707)Washer
Figure 7:

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