Car engine repair Chevrolet Tahoe 2 and 3

Description of engine components and its systems
General view of the engine Crankcase ventilation system The crankcase ventilation system is closed. Fresh air from the throttle body is supplied to the...

Engine lubrication system — design description
The lubrication system is forced under pressure. The gear-type oil pump with internal engagement is installed in the front part of the block and is driven by...

Intake manifold — design description
Intake manifold, late model engines (2007). 100 - cylinder block; 307 - Cooling system air bleed tube; 308 - Air bleed tube sealing ring; 309 - bolt; 312 -...

Cylinder head — design description
Cylinder head. 100 - cylinder block; 209 - pusher (without cylinder deactivation system); 210 - pusher guide; 211 - Push rod guide bolt; 212 - push rod; 213 -...

Front of the engine — design description
Front of the engine. 100 - cylinder block; 138 - crankshaft pulley; 139 - crankshaft pulley bolt; 140 - Front crankshaft oil seal; 200 - camshaft; 201 -...

Engine Bottom — Design Description
The lower part of the engine. 100 - cylinder block, 102 - connecting rod cap bolt, 103 - connecting rod cap, 104 - connecting rod bearing shell, 105 -...

Rear of the Engine — Design Description
Rear of the engine. 100 - cylinder block, 132 - automatic transmission drive coupling, 133 - bolt, 141 - rear crankshaft oil seal, 517 - bolt, 518 - rear...

Cylinder Block Plugs and Sensors — Design Description
Cylinder block plugs and sensors. 100 - cylinder block, 101 - front oil gallery plug, 110 - sealing ring, 111 - rear oil gallery plug, 112 - side oil gallery...

Attachment drive belt
Removal 1. Open the hood. 2. Remove the air filter outlet duct. 3. Install a socket wrench onto the accessory drive belt tensioner bolt. 4. Turn the tensioner...

Air conditioning compressor drive belt
Removal 1. Remove the accessory drive belt. 2. (Early models) Raise the car, unscrew the mounting bolts and remove the engine protection. Tightening torque 20...

Idler pulley — removal and installation
1. Remove the accessory drive belt. 2. Loosen the idler pulley mounting bolt and remove the pulley. Tightening torque 50 Nm. 3. Installation is carried out in...

Tensioner for drive belt of attachment units
Removal and installation 1. Remove the accessory drive belt. 2. Loosen the tensioner mounting bolts and remove the device. Tightening torque 50 Nm. 3....

Air Conditioning Compressor Drive Belt Tensioner
Removal and installation 1. Remove the air conditioning compressor drive belt. 2. Loosen the tensioner mounting bolts. Tightening torque 50 Nm. 3. Remove the...

Engine Mounts — Check
Note: A broken mount or poor mount attachment can cause misalignment and failure of certain powertrain components. Note: When lifting or supporting the engine,...

Removal and installation the left engine mount
Early models 1. Raise the vehicle. 2. Remove the left wheel. 3. Remove the left wheel arch liner. 4. Remove the front propeller shaft. Caution: Do not lift the...

Removal and installation the right engine mount
Early models 1. Remove the right half-block exhaust manifold. 2. Unscrew the bolts securing the right support to the bracket. Tightening torque 65 Nm. 3. Raise...

Support brackets (LY6 engine) — removal and installation
1. Remove the engine mount. 2. Loosen the support bracket mounting bolts. Tightening torque 65 Nm. 3. Remove the support bracket. 4. Installation is carried...

Upper engine cover
Removal 1. Open the hood. Early models 2. Unscrew the bolt securing the cover to the intake manifold. Late models 2. Grasp the front of the upper engine cover...

Hoses and tubes of the crankcase ventilation system
Removal and installation 1. Remove the top engine cover. 2. Remove the crankcase ventilation hose from the intake manifold fitting and the valve cover of the...

Intake manifold — removal and installation
Early models Note: The intake manifold, throttle body, fuel rail and injectors can be removed and installed as a single unit. 1. If necessary, remove the...

Exhaust manifold — removal and installation
1. Remove the high-voltage wires from the spark plugs. 2. Unscrew the nuts securing the exhaust system inlet pipe to the exhaust manifold. Remove and discard...

Crankcase Collapse Cover — Removal and Installation
Removal 1. Remove the intake manifold. Early models 2. Carefully remove the rubber plugs. 3. Disconnect the knock sensor wiring connectors. 4. Remove the knock...

Oil manifold (cylinder deactivation system)
Removal 1. Remove the intake manifold. 2. Disconnect the oil pressure sensor connector (2). 3. Do not lift the oil manifold by the wire frame. 4. Loosen the...

Left half-block valve cover
Removal 1. Remove the top engine cover. 2. Remove the holder (2) of the left half-block wire harness connector. 3. Disconnect the ignition coil connector (1)....

Valve cover of the right half-block
Removal 1. Remove the top engine cover. 2. Remove the holder (2) of the right half-block wire harness connector. 3. Disconnect the ignition coil wiring from...

Rocker arms and push rods
Removal 1. Remove the valve cover. Note: Engine firing order is 1-8-7-2-6-5-4-3, odd numbered cylinders in the left half block. 2. Remove the spark plug from...

Valve stem seals and springs
Removal Attention: carry out work only on a cold engine. 1. Remove the valve drive rocker arm. 2. Disconnect the high-voltage wire from the spark plug: turn...

Dipstick and dipstick guide
Removal 1. Remove the dipstick (418). 2. Loosen the bolt (419) securing the dipstick guide. Tightening torque 25 Nm. 3. Remove the dipstick guide from the...

Cylinder head — removal and installation
Removal 1. Left half-block head: remove the generator bracket. Right half-block head: remove the oil dipstick guide. 2. Remove the intake manifold. 3. Remove...

Valve lifters — removal and installation
Removal 1. Remove the cylinder head. 2. Loosen the bolts (211) securing the valve guide. Tightening torque 12 Nm. 3. Remove the pushrod guides (210) together...

Crankshaft pulley
Removal 1. Remove the air conditioning compressor belt. 2. On early model engines, remove the lower fan diffuser; on late model engines, remove the radiator...

Front crankshaft oil seal
Removal 1. Remove the crankshaft pulley. 2. Remove the front crankshaft oil seal (1) from the engine front cover and discard the oil seal. Installation...

Front engine cover
Removal 1. Remove the coolant pump. 2. Remove the crankshaft pulley. 3. Disconnect the camshaft position sensor wire connector from the engine wire harness. 4....

Variable valve timing system
This system has been installed on models since 2007. Removal and installation the electromagnetic valve 1. Remove the coolant pump. 2. Disconnect the connector...

Rear crankshaft oil seal
Removal 1. Remove the automatic transmission drive clutch. 2. Remove and discard the rear crankshaft oil seal. Installation 1. Decide on the direction of...

Rear engine cover
Removal 1. Remove the automatic transmission drive clutch. 2. Unscrew the bolts (1) securing the oil pan to the rear engine cover. 3. Unscrew the bolts (517)...

Oil filter adapter
Removal 1. Raise the vehicle and place safety stands under the frame. 2. On 1500 series models, loosen the oil pan guard mounting bolts and remove the guard....

Oil pan — removal and installation
Removal Early models 1. Unscrew the inner nuts and washers securing the front axle beam to the frame bracket. 2. Place a jack under the bridge beam. 3. Unscrew...

Pressure reducing valve — removal and installation
Removal 1. Remove the oil pan. 2. Place the pallet on the workbench. 3. Unscrew the pressure reducing valve (455) and remove the sealing washer. Discard the...

Oil level sensor
Oil pressure sensor See sections " Oil manifold " or " Block Collapse Cover " this chapter depending on the engine version. Removal 1. Raise the vehicle and...

Oil pump — removal and installation
Removal 1. Remove the oil pan. 2. Remove the front cover. 3. Unscrew the bolt and nuts securing the oil receiver. Tightening torque: bolt 12 Nm; nuts 25 Nm. 4....

Timing chain and sprockets
Removal 1. Remove the oil pump. 2. Rotate the crankshaft until the timing marks (1) and (2) on the camshaft and crankshaft sprockets are aligned. Caution: Do...

Camshaft — Removal and Installation
Removal Caution: When replacing the camshaft, replace the valve lifters at the same time. 1. Remove the radiator support. 2. Remove the valve lifters. 3....

Torque converter drive clutch
Removal 1. Remove the automatic transmission. Caution: Before removing, mark the position of the coupling relative to the crankshaft. 2. Loosen the coupling...

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Tahoe 2 and 3 (2000-2014)