Car engine repair Chevrolet Tahoe 2 and 3

Description of the elements of the engine and its systems
General view of the engine Crankcase ventilation system The crankcase ventilation system is closed. Fresh air from the throttle body enters the crankcase,...

Engine lubrication system — design description
The lubrication system is forced under pressure. The oil pump is an internal gear-type oil pump mounted at the front of the block and driven from the...

Intake Manifold — Design Description
Intake Manifold, Late Model Engines (2007). 100 - cylinder block; 307 - air vent pipe from the cooling system; 308 - sealing ring of the air discharge tube;...

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

Engine Front — Design Description
Front of the engine. 100 - cylinder block; 138 - crankshaft pulley; 139 - crankshaft pulley bolt; 140 - front crankshaft oil seal; 200 - camshaft; 201 -...

Lower part of the engine — description of the design
The bottom of the engine. 100 - cylinder block, 102 - connecting rod cap bolt, 103 - connecting rod cap, 104 - connecting rod bearing shell, 105 - connecting...

Rear of the engine — design description
Rear of the engine. 100 - cylinder block, 132 - automatic transmission clutch, 133 - bolt, 141 - crankshaft rear oil seal, 517 - bolt, 518 - rear engine cover,...

Cylinder block plugs and sensors — design description
Plugs and sensors of the block of cylinders. 100 - cylinder block, 101 - front oil gallery plug, 110 - o-ring, 111 - rear oil gallery plug, 112 - oil gallery...

Attachment drive belt
Withdrawal 1. Open the hood. 2. Remove the air cleaner outlet duct. 3. Install a socket wrench on the accessory drive belt tensioner bolt. 4. Turn tensioner...

A/C Compressor Drive Belt
Withdrawal 1. Remove the accessory drive belt. 2. (early models) Raise the car, unscrew the mounting bolts and remove the engine protection. Tightening torque...

Stray pulley — removal and installation
1. Remove the accessory drive belt. 2. Turn away a bolt of fastening of a parasitic pulley, remove a pulley. Tightening torque 50 Nm. 3. Installation is...

Attachment drive belt tensioner
Removal and installation 1. Remove the accessory drive belt. 2. Turn away bolts of fastening of the tension device and remove the device. Tightening torque 50...

Air conditioning compressor drive belt tensioner
Removal and installation 1. Remove the A/C compressor drive belt. 2. Turn away bolts of fastening of the tension device. Tightening torque 50 Nm. 3. Remove...

Engine Mounts — Check
Note: A broken mount or poor mounting of the mount can cause misalignment and destruction of certain parts of the power package. Note: When lifting or...

Removal and installation of the left support of the engine
Early models 1. Raise the car. 2. Remove the left wheel. 3. Remove the left wheel arch liner. 4. Remove the front propeller shaft. Caution: Do not raise the...

Removal and installation of the right support of the engine
Early models 1. Remove the exhaust manifold of the right half-block. 2. Turn away bolts of fastening of the right support to an arm. Tightening torque 65 Nm....

Support brackets (LY6 engine) — removal and installation
1. Remove the engine support. 2. Turn away bolts of fastening of an arm of a support. Tightening torque 65 Nm. 3. Remove the support bracket. 4. Installation...

Upper engine cover
Withdrawal 1. Open the hood. Early models 2. Turn away a bolt of fastening of a cover to an inlet collector. Later models 2. Grab the front of the engine top...

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

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

Exhaust manifold — removal and installation
1. Remove high voltage wires from spark plugs. 2. Turn away nuts of fastening of a reception pipe of system of release to a final collector. Remove and discard...

Block collapse cover — removal and installation
Withdrawal 1. Remove the intake manifold. Early models 2. Carefully remove the rubber plugs. 3. Disconnect knock sensor wiring connectors. 4. Remove knock...

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

Valve cover of the left semi-block
Withdrawal 1. Remove the engine top cover. 2. Remove the holder (2) connector of the wire bundle of the left semi-block. 3. Disconnect the connector (1)...

Valve cover of the right semi-block
Withdrawal 1. Remove the engine top cover. 2. Remove the holder (2) connector of the wire bundle of the right semi-block. 3. Detach from retainer (1) ignition...

Rocker arms and push rods
Withdrawal 1. Remove the valve cover. Attention: the order of operation of the engine is 1-8-7-2-6-5-4-3, odd cylinders in the left half-block. 2. Turn out a...

Valve stem seals and valve springs
Withdrawal Attention: work only on a cold engine. 1. Remove the valve rocker. 2. Disconnect the high voltage wire from the spark plug: turn the wire cover half...

Dipstick and dipstick guide
Withdrawal 1. Remove the dipstick (418). 2. Remove the bolt (419) fastening the probe guide. Tightening torque 25 Nm. 3. Remove the dipstick guide from the...

Cylinder head — removal and installation
Withdrawal 1. Head of the left semi-block: remove the generator bracket. Head of the right semi-block: remove the oil dipstick guide. 2. Remove the intake...

Valve lifters — removal and installation
Withdrawal 1. Remove the cylinder head. 2. Remove the bolts (211) valve guide mountings. Tightening torque 12 Nm. 3. Remove pusher guides (210) along with...

Crankshaft pulley
Withdrawal 1. Remove the A/C compressor belt. 2. On early model engines, remove the lower fan diffuser; on late model engines, remove the radiator fan together...

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

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

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

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

Rear engine cover
Withdrawal 1. Remove the automatic transmission drive clutch. 2. Remove the bolts (1) attaching the oil pan to the rear cover of the engine. 3. Remove the...

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

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

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

Oil level sensor
Oil pressure sensor See sections " Oil manifold " or " Camber cover " this chapter, depending on the engine version. Withdrawal 1. Raise the vehicle and place...

Oil pump — removal and installation
Withdrawal 1. Remove the oil pan. 2. Remove the front cover. 3. Turn away a bolt and nuts of fastening of an oil receiver. Tightening torque: bolt 12 Nm; nuts...

Timing chain and sprockets
Withdrawal 1. Remove the oil pump. 2. Rotate the crankshaft until the alignment marks are aligned (1) And (2) on the camshaft and crankshaft sprockets....

Camshaft — removal and installation
Withdrawal Attention: 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 clutch
Withdrawal 1. Remove automatic transmission. Attention: before removal, mark the position of the coupling relative to the crankshaft. 2. Turn away bolts of...

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Tahoe 2 and 3 (2000-2014)