GMC gasoline V6 90° Generation I 4.3L (262 CID) Vortec 4300 V6 LU3 (2004–2014)

GMC gasoline V6 90° Generation I 4.3L (262 CID) Vortec 4300 V6 LU3 (2004–2014) is an 262 in³ (4.29 L) internal combustion reciprocating V6 engine. It has bore/stroke ratio of 4.012 in × 3.48 in (10.19 cm × 8.84 cm), and uses 9.2:1 compression. This engine was rated 195 hp (145.41 kW) at 4600 rpm and 260 lbf⋅ft (352.51 N⋅m) of torque at 2800 rpm. It was used in Chevrolet and GMC cars.

GMC gasoline V6 90° Generation I 4.3L (262 CID) Vortec 4300 V6 LU3 (2004–2014) engine performance rating according to SAE J1349 (SAE Net) standard.
Parameter Output
Power Rating 195 hp (145.41 kW) at 4600 RPM
Torque Rating 260 lbf⋅ft at 2800 RPM
GMC gasoline V6 90° Generation I 4.3L (262 CID) Vortec 4300 V6 LU3 (2004–2014) engine general specifications.
Parameter Value
Type Internal Combustion Reciprocating
Fuel Type Gasoline or Natural Gas (CNG)
Cylinder Configuration V6
Engine Displacement 262 in³
Bore 4.012 in
Stroke 3.48 in
Compression Ratio 9.2:1
Firing Order 1-6-5-4-3-2

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GMC gasoline V6 90° Generation I 4.3L (262 CID) Vortec 4300 V6 LU3 (2004–2014) engine block, crankshaft and pistons specifications.
Parameter Value
Block Material Cast iron
Crankshaft Material Cast nodular iron
Piston Material Cast alloy aluminum
Connecting Rod Material Forged steel
GMC gasoline V6 90° Generation I 4.3L (262 CID) Vortec 4300 V6 LU3 (2004–2014) spark plugs and wires specifications.
Parameter Value
Spark Plugs R41-932
Spark Plug Gap 0.06 in
Wires Resistance (nominal) 1000 ohms per foot
GMC gasoline V6 90° Generation I 4.3L (262 CID) Vortec 4300 V6 LU3 (2004–2014) engine head and valvetrain specifications.
Parameter Value
Head Material Cast iron
Valvetrain Type OHV
Valves per Cylinder 2
Camshaft Material Steel
GMC gasoline V6 90° Generation I 4.3L (262 CID) Vortec 4300 V6 LU3 (2004–2014) air intake specifications.
Parameter Value
Air Intake Method Naturally Aspirated
GMC gasoline V6 90° Generation I 4.3L (262 CID) Vortec 4300 V6 LU3 (2004–2014) fuel injection specifications.
Parameter Value
Injection Type Multi Point
GMC gasoline V6 90° Generation I 4.3L (262 CID) Vortec 4300 V6 LU3 (2004–2014) oil pump specifications.
Parameter Value
Oil Pump Pressure 24 Psi at 4000 RPM
GMC gasoline V6 90° Generation I 4.3L (262 CID) Vortec 4300 V6 LU3 (2004–2014) water pump specifications.
Parameter Value
Water Pump Centrifugal vane impeller type pump
Condition Value
expand_moreGeneral specifications
expand_moreBalance shaft
expand_moreBearing journal diameter
Rear 1.4991.5 in
expand_moreBushing bore diameter
Rear 0.0020.0035 in
expand_moreBlock
Crankshaft main bearing bore out-of-round 0.002 in
Cylinder bore diameter 4.0014.002 in
expand_moreCylinder bore out-of-round
Production 0.00067 in
Service 0.002 in
expand_moreCylinder bore taper
expand_moreProduction
Relief Side 0.00098 in
Thrust side 0.00047 in
Service 0.00098 in
Cylinder head deck surface flatness 0.0020.006 in
expand_moreCamshaft
Camshaft end play 0.0010.009 in
Camshaft journal ⌀ 1.871.87 in
Camshaft journal out-of-round 0.00098 in
expand_moreCamshaft lobe lift
Exhaust 0.280.29 in
Intake 0.270.28 in
Camshaft runout 0.0026 in
expand_moreConnecting rod
expand_moreConnecting rod bearing clearance
Production 0.00150.0031 in
Service 0.000980.0025 in
Connecting rod side clearance 0.00590.017 in
expand_moreCrankshaft
Connecting rod journal diameter 2.2492.25 in
expand_moreConnecting rod journal out-of-round
Production 0.00031 in
Service 0.00098 in
expand_moreConnecting rod journal taper
Production 0.00039 in
Service 0.00098 in
Crankshaft end play 0.0020.0079 in
expand_moreCrankshaft main bearing clearance 1
Production 0.000790.002 in
Service 0.0010.002 in
expand_moreCrankshaft main bearing clearance 2, 3, and 4
Production 0.00110.0023 in
Service 0.000980.0025 in
Crankshaft main journal diameter 1 2.4492.449 in
Crankshaft main journal diameter 2 and 3 2.4482.449 in
Crankshaft main journal diameter 4 2.4482.449 in
expand_moreCrankshaft main journal out-of-round
Production 0.0002 in
Service 0.00098 in
Crankshaft main journal taper 0.00028 in
expand_moreExhaust manifold
expand_moreSurface flatness
Flange to flange 0.0098 in
Individual flange 0.002 in
expand_moreIntake manifold
Surface flatness 0.0039 in
expand_morePiston rings
expand_morePiston ring end gap
expand_moreFirst compression ring
Production 0.00980.016 in
Service 0.00980.02 in
expand_moreSecond compression ring
Production 0.0150.023 in
Service 0.0150.031 in
expand_moreOil control ring
Production 0.00980.03 in
Service 0.00020.0035 in
expand_morePiston ring to groove clearance
expand_moreFirst compression ring
Production 0.00120.0028 in
Service 0.00120.0033 in
expand_moreSecond compression ring
Production 0.0030.011 in
Service 0.00120.0033 in
expand_moreOil control ring
Production 0.00180.0077 in
Service 0.0030.0079 in
expand_moreMetric english
expand_morePistons and pins
expand_morePiston
expand_morePiston to bore clearance
Production 0.000710.0024 in
Service 0.003 in
expand_morePin
expand_morePiston pin clearance to connecting rod bore
Press Fit 0.000470.0019 in
expand_morePiston pin clearance to piston pin bore
Production 0.000510.00091 in
Service 0.00098 in
Piston pin diameter 0.9270.927 in
expand_moreValve system
expand_moreValves
Valve face angle 45°
Valve seat angle 46°
Valve seat run-out 0.002 in
expand_moreValve seat width
Intake 0.040.065 in
Exhaust 0.0650.098 in
Valve stem oil seal installed height 0.0390.079 in
expand_moreValve stem-to-guide clearance
expand_moreIntake
Production 0.000980.0027 in
Service 0.000980.0037 in
expand_moreExhaust
Production 0.000980.0027 in
Service 0.000980.0037 in
expand_moreRocker arms
Valve rocker arm ratio 1.5:1
expand_moreValve springs
Valve spring free length 2.02 in
expand_moreValve spring installed height
Intake 1.691.71 in
Exhaust 1.691.71 in
expand_moreValve spring load
Closed 1.111.23 ft
Open 2.732.96 ft
expand_moreElectric engine
expand_moreBattery
expand_moreBase
Cold Cranking Amperage (CCA) 600 A
Reserve capacity rating 115 Minutes
Replacement Battery Number 78-6YR
expand_moreDual (optional)
Reserve capacity rating 115 Minutes
Replacement Battery Number 78-7YR
Cold Cranking Amperage (CCA) 770 A
expand_moreParallel hybrid truck HP2
GM part number 88986971
Replacement Battery Number Panasonic HV1255
Starter motor PG-260G
expand_moreGenerator
expand_moreBase
Generator model Delphi AD230
Rated Output 102 A
Load test output 71 A
expand_moreDual (optional)
Generator model Delphi AD244
Rated Output 130 A
Load test output 91 A
expand_moreBosch Generator
Generator model Bosch 15755900
Rated Output 130 A
Load test output 91 A
Condition Value
expand_moreGeneral specifications
Accelerator cable bracket nuts for stud screws 8.85 lbf⋅ft
Accelerator cable bracket nut on throttle body 6.64 lbf⋅ft
Accelerator cable bracket stud bolts on intake manifold 4.43 lbf⋅ft
Accelerator cable bracket stud bolts on throttle body 8.85 lbf⋅ft
Air cleaner bracket stud screws 5.9 lbf⋅ft
expand_moreBalance shaft driven gear screws
First stage 14.75 lbf⋅ft
Final stage 35°
Balance shaft retainer screws 8.85 lbf⋅ft
Battery wiring harness bracket bolt on the oil pan 8.85 lbf⋅ft
Battery negative wiring harness bolt on the engine block 18.44 lbf⋅ft
Battery positive wiring harness junction block bracket screws 18.44 lbf⋅ft
Belt idler pulley screws 36.88 lbf⋅ft
Camshaft retainer screws 8.85 lbf⋅ft
expand_moreMetric english
Camshaft sprocket screws 18.44 lbf⋅ft
expand_moreConnecting rod nuts
First stage 19.91 lbf⋅ft
Final stage 70°
Crankshaft balancer screws 70.07 lbf⋅ft
expand_moreCrankshaft bearing cap screws
expand_morePreferred method
First stage 14.75 lbf⋅ft
Final stage 73°
Crankshaft position sensor (CKP) screws 6.64 lbf⋅ft
Crankshaft pulley screws 42.78 lbf⋅ft
Crankshaft rear oil seal housing bolt and nuts 8.85 lbf⋅ft
Crankshaft rear oil seal housing retainer stud screws 4.43 lbf⋅ft
Crossmember screws 73.76 lbf⋅ft
expand_moreCylinder head screws
expand_morePreferred method
First pass (all screws) 22.13 lbf⋅ft
Long bolts final pass in sequence 75°
Medium bolts final pass (in sequence) 65°
Short Bolts Final Pass in Sequence 55°
Cylinder head core hole plug 14.75 lbf⋅ft
Distributor cap screws 1.77 lbf⋅ft
Distributor clamp screws 18.44 lbf⋅ft
Drive belt idler screws 36.88 lbf⋅ft
Drive belt tensioner screws 36.88 lbf⋅ft
Engine block left oil gallery plug 14.75 lbf⋅ft
Engine block rear left oil gallery plug 22.13 lbf⋅ft
Engine block rear right oil gallery plug 14.75 lbf⋅ft
Engine block coolant drain plug 14.75 lbf⋅ft
Engine block oil gallery plugs 14.75 lbf⋅ft
Engine coolant heater screws 1.48 lbf⋅ft
Engine coolant temperature sensor (ECT) 14.75 lbf⋅ft
Engine flywheel screws 73.76 lbf⋅ft
Engine front cover screws 8.85 lbf⋅ft
Engine lift front bracket stud screws 25.81 lbf⋅ft
Engine mount bracket screws 36.88 lbf⋅ft
Engine mount bracket screws to the engine block 36.88 lbf⋅ft
Engine mount bracket through-screws 55.32 lbf⋅ft
Engine mount frame lateral screws 47.94 lbf⋅ft
Engine oil level sensor 9.59 lbf⋅ft
Engine oil pressure gage sensor 22.13 lbf⋅ft
Engine oil pressure gage sensor fitting 11.06 lbf⋅ft
Engine shield screws 14.75 lbf⋅ft
Junction block bracket screws 6.64 lbf⋅ft
Engine wiring harness bracket bolt on the generator and the tensioner bracket 18.44 lbf⋅ft
Engine wiring harness bracket nut on the evaporator canister purge solenoid valve 6.64 lbf⋅ft
Engine wiring harness bracket nut on the intake manifold 8.85 lbf⋅ft
Engine wiring harness bracket stud screws 18.44 lbf⋅ft
Engine wiring harness screws 6.64 lbf⋅ft
expand_moreEngine cooling
Auxiliary water pump bracket nuts 6.64 lbf⋅ft
Coolant heater screws 1.48 lbf⋅ft
Coolant heater cord screws 5.9 lbf⋅ft
Engine block coolant drain plug 44.25 lbf⋅ft
Engine shield screws 14.75 lbf⋅ft
Fan clutch screws 16.96 lbf⋅ft
Fan clutch nuts 41.3 lbf⋅ft
Fan shroud screws 6.64 lbf⋅ft
Hood hinge screws 18.44 lbf⋅ft
Radiator screws 18.44 lbf⋅ft
Starter and generator control module (SGCM) brace screws 18.44 lbf⋅ft
Starter and generator control module (SGCM) coolant pump screws 6.64 lbf⋅ft
Starter and generator control module (SGCM) coolant tank screws 14.75 lbf⋅ft
Starter and generator control module (SGCM) coolant tank nuts 6.64 lbf⋅ft
Starter and generator control module (SGCM) cooling fan screws 6.64 lbf⋅ft
Starter and generator control module (SGCM) radiator screws 6.64 lbf⋅ft
Starter and generator stator coolant inlet pipe screws 6.64 lbf⋅ft
Surge tank screws and nuts 6.64 lbf⋅ft
Thermal bypass fitting 25.81 lbf⋅ft
Thermal bypass hose screws 7.38 lbf⋅ft
Transmission control module (TCM) cover screws 6.64 lbf⋅ft
Transmission control module (TCM) electrical connector screws 5.9 lbf⋅ft
Water pump screws 33.19 lbf⋅ft
Water pump pulley screws 18.44 lbf⋅ft
expand_moreElectric engine
3-Phase wiring harness bracket cover screws 6.64 lbf⋅ft
3-phase wiring harness bracket nuts 6.64 lbf⋅ft
3-phase wiring harness cover nuts 6.64 lbf⋅ft
Starter and generator control module 3-phase wiring harness nuts 11.06 lbf⋅ft
Stator 3-phase wiring harness nuts 10.33 lbf⋅ft
Air cleaner outlet ducts bracket 2.95 lbf⋅ft
ACC power receptacle ground harness screws 6.64 lbf⋅ft
Auxiliary battery wiring harness bracket screws 7.38 lbf⋅ft
Auxiliary battery positive wiring harness nuts 6.64 lbf⋅ft
Auxiliary battery relay nuts 6.64 lbf⋅ft
Auxiliary battery tray screws 6.64 lbf⋅ft
Auxiliary battery tray nuts 18.44 lbf⋅ft
Auxiliary negative battery wiring harness screws 12.54 lbf⋅ft
Auxiliary positive battery wiring harness screws 12.54 lbf⋅ft
Auxiliary positive battery wiring harness nuts 5.9 lbf⋅ft
Auxiliary positive wiring harness to relay nuts 6.64 lbf⋅ft
Battery wiring harness bracket screws 18.44 lbf⋅ft
Battery hold down retainer screws 18.44 lbf⋅ft
Battery tray screws 6.64 lbf⋅ft
Crossbar screws 73.76 lbf⋅ft
Energy storage box (ESB) air duct hose to ESB screws 4.43 lbf⋅in
Energy storage box (ESB) air duct hose to Fan screws 8.85 lbf⋅in
Energy storage box (ESB) battery 1 to battery 2 power wiring harness nuts 7.38 lbf⋅ft
Energy storage box (ESB) battery 2 to battery 3 power wiring harness nuts 7.38 lbf⋅ft
Energy storage box (ESB) battery cut off switch nuts 7.38 lbf⋅ft
Energy storage box (ESB) battery bracket nuts 7.38 lbf⋅ft
Energy storage box (ESB) bracket nuts 34.67 lbf⋅ft
Energy storage box (ESB) fan screws 8.85 lbf⋅in
Energy storage box (ESB) fuse bracket screws 1.48 lbf⋅ft
Energy storage box (ESB) fuse power wiring harness to high current sensor nuts 7.38 lbf⋅ft
Energy storage box (ESB) ground wire screws 4.43 lbf⋅ft
Energy storage box (ESB) ground strap nuts 7.38 lbf⋅ft
Energy storage box (ESB) high current connector screws 4.43 lbf⋅ft
Energy storage box (ESB) high current connector to battery 3 nuts 7.38 lbf⋅ft
Energy storage box (ESB) high current sensor nuts 4.43 lbf⋅ft
Energy storage box (ESB) intermediate cover screws 4.43 lbf⋅ft
Energy storage box (ESB) maxi-fuse nuts 7.38 lbf⋅ft
Energy storage box (ESB) receptacle outlet cover screws 4.43 lbf⋅in
Energy storage box (ESB) receptacle outlet screws 1.48 lbf⋅ft
Energy storage box (ESB) service disconnect switch screws and nuts 4.43 lbf⋅ft
Energy storage box (ESB) service disconnect switch power wiring harness to high current connector nuts 7.38 lbf⋅ft
Energy storage box (ESB) service disconnect switch power wiring harness to service disconnect switch nuts 7.38 lbf⋅ft
Energy storage box (ESB) temperature sensor screws 4.43 lbf⋅in
Energy storage control module nuts 4.43 lbf⋅ft
Engine ground harness screws 11.8 lbf⋅ft
Engine wiring ground harness screws 11.8 lbf⋅ft
Fender to cowl support brace screws 6.64 lbf⋅ft
Flexplate screws 73.76 lbf⋅ft
Forward lamp wiring ground harness screws 6.64 lbf⋅ft
Front end diagonal brace screws 6.64 lbf⋅ft
Generator screws 36.88 lbf⋅ft
Generator bracket 30.24 lbf⋅ft
Generator wiring harness nuts 6.64 lbf⋅ft
Ground strap nut (energy storage box) 7.38 lbf⋅ft
Harness clip to junction block bracket screws 6.64 lbf⋅ft
Heater hose bracket screws 18.44 lbf⋅ft
Hybrid Control Module bracket screws 6.64 lbf⋅ft
J-46093 screws 36.88 lbf⋅ft
Negative Battery wiring harness screws 12.54 lbf⋅ft
Positive battery wiring harness screws 12.54 lbf⋅ft
Positive wiring harness at underhood bussed electrical center (UBEC) screws 6.64 lbf⋅ft
Positive/Negative battery wiring harness bolt 14V 6.64 lbf⋅ft
Positive/Negative battery wiring harness channel rear nut 42V 7.38 lbf⋅ft
Positive/Negative battery wiring harness grommet nut 42V 7.38 lbf⋅ft
Positive/Negative battery wiring ground harness strap bolts 42V 7.38 lbf⋅ft
Starter screws 31.72 lbf⋅ft
Starter and generator control module (SGCM) screws 14.75 lbf⋅ft
Starter and generator control module (SGCM) brace screws 18.44 lbf⋅ft
Starter and generator control module (SGCM) bracket screws 6.64 lbf⋅ft
Starter and generator control module (SGCM) bracket nuts 18.44 lbf⋅ft
Starter and generator control module (SGCM) coolant tank screws 6.64 lbf⋅ft
Starter and generator control module (SGCM) cover screws 6.64 lbf⋅ft
Starter and generator stator stud screws 11.8 lbf⋅ft
Starter lead nuts 6.64 lbf⋅ft
Starter solenoid nuts 2.51 lbf⋅ft
Transmission fill tube nuts 13.28 lbf⋅ft
Transmission heat shield 12.54 lbf⋅ft
Transmission mount nuts 29.5 lbf⋅ft
Transmission support screws and nuts 51.63 lbf⋅ft
Wiring harness bracket screws 18.44 lbf⋅ft
expand_moreEngine controls
Accelerator cable bracket stud bolts and nuts 8.85 lbf⋅ft
Accelerator cable bracket nuts 7.38 lbf⋅ft
Air cleaner outlet ducts bracket 2.95 lbf⋅ft
Air cleaner outlet resonator stud screws 7.38 lbf⋅ft
Camshaft position (CMP) sensor screws 1.62 lbf⋅ft
Crankshaft position sensor (CKP) screws 6.64 lbf⋅ft
Distributor hold down screws 18.44 lbf⋅ft
Distributor cap screws 1.77 lbf⋅ft
Engine coolant temperature sensor (ECT) 14.75 lbf⋅ft
Engine shield screws 14.75 lbf⋅ft
EVAP canister bracket screws 18.44 lbf⋅ft
EVAP canister purge valve nuts 8.85 lbf⋅ft
EVAP canister ventilation valve bracket screws 8.85 lbf⋅ft
Fuel lines bracket screws 4.43 lbf⋅ft
Fuel lines bracket on the transmission 18.44 lbf⋅ft
Fuel lines fittings 20.65 lbf⋅ft
Fuel lines nuts 2.21 lbf⋅ft
Fuel injector bracket lock nuts 2.21 lbf⋅ft
Fuel tank ground strap screws 6.64 lbf⋅ft
Fuel tank filler housing to body screws 1.7 lbf⋅ft
Fuel tank filler housing to fuel tank screws 1.7 lbf⋅ft
Fuel tank filler hose clamp 1.84 lbf⋅ft
Fuel line fittings 18.44 lbf⋅ft
Fuel tank shield screws 13.28 lbf⋅ft
Fuel tank strap screws 29.5 lbf⋅ft
Heated oxygen sensor 30.98 lbf⋅ft
Idle air control valve screws 2.21 lbf⋅ft
Ignition coil bracket stud screws 8.11 lbf⋅ft
Ignition module screws 2.58 lbf⋅ft
Knock sensor screws 18.44 lbf⋅ft
Mass air flow (MAF) hose clamp 2.95 lbf⋅ft
Powertrain control module (PCM) electrical connector 5.9 lbf⋅ft
Rotor screws 1.48 lbf⋅ft
expand_moreSpark Plug
New aluminium head 14.75 lbf⋅ft
New iron head 22.13 lbf⋅ft
Used head 11.06 lbf⋅ft
Throttle body stud screws 6.64 lbf⋅ft
Throttle position sensor (TPS) screws 1.48 lbf⋅ft
expand_moreExhaust system
Exhaust bracket screws 8.85 lbf⋅ft
Exhaust heat shield bolt (body panel) 6.64 lbf⋅ft
Exhaust heat shield nut (body panel) 6.64 lbf⋅ft
Exhaust manifold stud screws 22.13 lbf⋅ft
Exhaust manifold heat shields 6.64 lbf⋅ft
Exhaust manifold pipe nuts 36.88 lbf⋅ft
Exhaust muffler hanger nuts 36.88 lbf⋅ft
Exhaust muffler nuts 29.5 lbf⋅ft
Exhaust pipe clamp 32.45 lbf⋅ft
Exhaust pipe bracket bolt 4L60-E 12.54 lbf⋅ft
Hood hinge screws 18.44 lbf⋅ft
Outlet duct clamp 4.43 lbf⋅ft
Oxygen Sensor 30.98 lbf⋅ft
Rear shock absorber lower screws 70.07 lbf⋅ft
Spark plug wire retainer screws 8.85 lbf⋅ft
Transmission screws 73.76 lbf⋅ft
Transmission mount to support nuts 29.5 lbf⋅ft
Transmission support crossmember screws 70.07 lbf⋅ft
Units:
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