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.
Parameter | Output |
---|---|
Power Rating | 195 hp (145.41 kW) at 4600 RPM |
Torque Rating | 260 lbf⋅ft at 2800 RPM |
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 |
Photos
-
add_photo
Please help our community. Upload your photos of GMC gasoline V6 90° Generation I 4.3L (262 CID) Vortec 4300 V6 LU3 (2004–2014) engine.
Sign Up / Sign In
Parameter | Value |
---|---|
Block Material | Cast iron |
Crankshaft Material | Cast nodular iron |
Piston Material | Cast alloy aluminum |
Connecting Rod Material | Forged steel |
Parameter | Value |
---|---|
Spark Plugs | R41-932 |
Spark Plug Gap | 0.06 in |
Wires Resistance (nominal) | 1000 ohms per foot |
Parameter | Value |
---|---|
Head Material | Cast iron |
Valvetrain Type | OHV |
Valves per Cylinder | 2 |
Camshaft Material | Steel |
Parameter | Value |
---|---|
Air Intake Method | Naturally Aspirated |
Parameter | Value |
---|---|
Injection Type | Multi Point |
Parameter | Value |
---|---|
Oil Pump Pressure | 24 Psi at 4000 RPM |
Parameter | Value |
---|---|
Water Pump | Centrifugal vane impeller type pump |
Condition | Value |
---|
expand_moreGeneral specifications
expand_moreBalance shaft
expand_moreBearing journal diameter
Rear | 1.499–1.5 in |
expand_moreBushing bore diameter
Rear | 0.002–0.0035 in |
expand_moreBlock
Crankshaft main bearing bore out-of-round | 0.002 in |
Cylinder bore diameter | 4.001–4.002 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 | 0.002–0.006 in |
expand_moreCamshaft
Camshaft end play | 0.001–0.009 in |
Camshaft journal ⌀ | 1.87–1.87 in |
Camshaft journal out-of-round | 0.00098 in |
expand_moreCamshaft lobe lift
Exhaust | 0.28–0.29 in |
Intake | 0.27–0.28 in |
Camshaft runout | 0.0026 in |
expand_moreConnecting rod
expand_moreConnecting rod bearing clearance
Production | 0.0015–0.0031 in |
Service | 0.00098–0.0025 in |
Connecting rod side clearance | 0.0059–0.017 in |
expand_moreCrankshaft
Connecting rod journal diameter | 2.249–2.25 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 | 0.002–0.0079 in |
expand_moreCrankshaft main bearing clearance 1
Production | 0.00079–0.002 in |
Service | 0.001–0.002 in |
expand_moreCrankshaft main bearing clearance 2, 3, and 4
Production | 0.0011–0.0023 in |
Service | 0.00098–0.0025 in |
Crankshaft main journal diameter 1 | 2.449–2.449 in |
Crankshaft main journal diameter 2 and 3 | 2.448–2.449 in |
Crankshaft main journal diameter 4 | 2.448–2.449 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 | 0.0098–0.016 in |
Service | 0.0098–0.02 in |
expand_moreSecond compression ring
Production | 0.015–0.023 in |
Service | 0.015–0.031 in |
expand_moreOil control ring
Production | 0.0098–0.03 in |
Service | 0.0002–0.0035 in |
expand_morePiston ring to groove clearance
expand_moreFirst compression ring
Production | 0.0012–0.0028 in |
Service | 0.0012–0.0033 in |
expand_moreSecond compression ring
Production | 0.003–0.011 in |
Service | 0.0012–0.0033 in |
expand_moreOil control ring
Production | 0.0018–0.0077 in |
Service | 0.003–0.0079 in |
expand_moreMetric english
expand_morePistons and pins
expand_morePiston
expand_morePiston to bore clearance
Production | 0.00071–0.0024 in |
Service | 0.003 in |
expand_morePin
expand_morePiston pin clearance to connecting rod bore
Press Fit | 0.00047–0.0019 in |
expand_morePiston pin clearance to piston pin bore
Production | 0.00051–0.00091 in |
Service | 0.00098 in |
Piston pin diameter | 0.927–0.927 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 | 0.04–0.065 in |
Exhaust | 0.065–0.098 in |
Valve stem oil seal installed height | 0.039–0.079 in |
expand_moreValve stem-to-guide clearance
expand_moreIntake
Production | 0.00098–0.0027 in |
Service | 0.00098–0.0037 in |
expand_moreExhaust
Production | 0.00098–0.0027 in |
Service | 0.00098–0.0037 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 | 1.69–1.71 in |
Exhaust | 1.69–1.71 in |
expand_moreValve spring load
Closed | 1.11–1.23 ft |
Open | 2.73–2.96 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 |