Truck Trend is the source for official specifications, payload, towing capacity, and other information that matters to real truck users. Check out the latest info for the 2011 GMC Sierra 1500 Extended Cab pickup. The Extended Cab Sierra has five available engine options; 4.3L V-6, 4.8L V-8 FlexFuel, 5.3L V-8 FlexFuel (LMG), 5.3L V-8 FlexFuel (LC9), Vortec 6.2L V-8 FlexFuel engine matted with a four-speed automatic or six-speed automatic transmission.


2011 GMC Sierra 1500 Extended Cab Specifications
Overview
Models: TC/TK 10753: extended cab standard box, 2WD & 4WD
TC/TK 10953: extended cab long box, 2WD & 4WD
Body style / driveline: 5/6-passenger Extended Cab, 1/2-ton, 2-and 4-wheel drive light-duty pickups available with 6-foot 6-inch and 8-foot (2 m and 2.4 m) box
EPA vehicle class: full-size truck
Manufacturing location: Fort Wayne, Ind.
Engines
  Vortec 4.3L V-6 (LU3) Vortec 4.8L V-8 FlexFuel (L20) Vortec 5.3L V-8 FlexFuel (LMG)
Type: 4.3L V-6 4.8L V-8 5.3L V-8
Displacement (cu in / cc): 262 / 4300 293 / 4807 325 / 5328
Bore & stroke (in / mm): 4 x 3.48 / 101.6 x 88 3.78 x 3.27 / 96 x 83 3.78 x 3.62 / 96 x 92
Block material: cast iron cast iron cast iron
Cylinder head material: cast iron cast aluminum cast aluminum
Valvetrain: overhead valve, two valves per cylinder overhead valve, two valves per cylinder, variable valve timing overhead valve, two valves per cylinder, variable valve timing
Ignition system: direct composite distributor, platinum-tipped spark plugs, low-resistance spark plug wires coil near plug, platinum-tipped spark plugs, low-resistance spark plug wires coil near plug, platinum-tipped spark plugs, low-resistance spark plug wires
Fuel delivery: sequential fuel injection sequential fuel injection Active Fuel Management; sequential fuel injection
Compression ratio: 9.2:1 8.8:1 9.9:1
Horsepower (hp / kW @ rpm): 195 / 145 @ 4600* 302 / 225 @ 5600* 315 / 235 @ 5200* (gas)
326 / 243 @ 5300* (E85)
Torque (lb-ft / Nm @ rpm): 260 / 353 @ 2800* 305 / 414 @ 4600* 335 / 454 @ 4400* (gas)
348 / 472 @ 4400* (E85)
Recommended fuel: regular unleaded regular unleaded or E85 regular unleaded or E85
Maximum engine speed (rpm): 5600 6000 6000
Emissions controls: close-coupled catalytic converter, Quick Sync 58X ignition, returnless fuel rail, fast-response O² sensor
EPA-estimated fuel economy (city / hwy): 2WD: 15 / 20 2WD: 14 / 19 (gas)
4WD: 13 / 18 (gas)
2WD: 15 / 21 (gas)
4WD: 15 / 21 (gas)
Engines continued
  Vortec 5.3L V-8 FlexFuel (LC9) Vortec 6.2L V-8 FlexFuel (L9H)
Type: 5.3L V-8 6.2L V-8
Displacement (cu in / cc): 325 / 5328 376 / 6162
Bore & stroke (in / mm): 3.78 x 3.62 / 96 x 92 4.06 x 3.62 / 103.25 x 92
Block material: cast aluminum cast aluminum
Cylinder head material: cast aluminum cast aluminum
Valvetrain: overhead valve, two valves per cylinder, variable valve timing overhead valve, two valves per cylinder, variable valve timing
Ignition system: coil near plug, platinum-tipped spark plugs, low-resistance spark plug wires coil near plug, platinum-tipped spark plugs, low-resistance spark plug wires
Fuel delivery: Active Fuel Management; sequential fuel injection sequential fuel injection
Compression ratio: 9.9:1 10.5:1
Horsepower (hp / kW @ rpm): 315 / 235 @ 5200* (gas)
326 / 243 @ 5300* (E85)
403 / 301 @ 5700*
Torque (lb-ft / Nm @ rpm): 335 / 454 @ 4400* (gas)
348 / 472 @ 4400* (E85)
417 / 565 @ 4300*
Recommended fuel: regular unleaded or E85 premium recommended not required; or E85
Maximum engine speed (rpm): 6000 6000
Emissions controls: close-coupled catalytic converter, Quick Sync 58X ignition, returnless fuel rail, fast-response O² sensor
EPA-estimated fuel economy (city / hwy): 2WD: 15 / 21 (gas)
4WD: 15 / 21 (gas)
2WD: 13 / 19 (gas)
4WD: 12 / 19 (gas)
AWD: 12 / 19 (gas)
Transmissions
  Hydra-Matic 4L60 Hydra-Matic 6L80
Type: four-speed automatic six-speed automatic
Gear ratios (:1):
First: 3.06 4.03
Second: 1.63 2.36
Third: 1 1.53
Fourth: 0.7 1.15
Fifth: 0.85
Sixth: 0.67
Reverse: 2.29 3.06
Final drive ratio (std. and avail.): 3.08, 3.23, 3.42 and 3.73 3.08 or 3.42 or 3.73 (w/ enhanced trailering)
Chassis / Suspension
Front: 2WD and 4WD: independent coil-over-shock; monotube shock absorbers
Rear: solid axle with semi-elliptic, variable-rate, two-stage multi-leaf springs; splayed shock absorbers; monotube shocks (available)
Steering type: power-assisted rack-and-pinion (2WD and 4WD)
Steering ratio: 16.73:1
Steering wheel turns, lock-to-lock: 3
Turning circle, curb-to-curb (ft / m)
2WD/4WD Ext. Cab Short Box: 44.6 / 13.6
2WD/4WD Ext. Cab Std.Box: 46.9 / 14.3
2WD/4WD Ext. Cab Long Box: 51.2 / 15.6
Brakes
Type: power-assisted, four-wheel disc, four-wheel ABS; or power-assisted, front disc/rear drum, four-wheel ABS
Rotor diameter x thickness (in / mm)
disc/drum brakes: front: 12.99 x 1.18 / 330 x 30
rear: 11.61 x 2.36 / 295 x 60
with 4-wheel disc: front: 13 x 1.18 / 330.2 x 30
rear: 13.5 x 0.79 / 342.9 x 20
Total swept area (sq in / sq cm)
with disc/drum brakes: front: 301.2 / 1944
rear: 172.4 / 1112
with four-wheel disc: front: 257 / 1656
rear: 113 / 732
Wheels / Tires
Wheel size & type: 17 x 7.5-in. steel
17 x 7.5-in. chrome-style steel
17 x 7.5-in. polished cast aluminum
18 x 8-in. chrome-clad aluminum
20 x 8.5-in. chrome aluminum
Tires: P24570R17 all season, blackwall
P265/70R17 all season blackwall or white letter
P265/70R17 on/off road, blackwall or white letter
P265/65R18 all season, blackwall or white letter
P275/55R20 AL2 touring blackwall
*SAE certified.