| 2009 GMC Sierra Light Duty Regular Cab |
| Models: | • TC/TK 10703: regular cab standard box, 2WD & 4WD
• TC/TK 10903: regular cab long box, 2WD & 4WD |
| Body style / driveline: | 2/3-passenger regular cab, -ton, two- and four-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: | Pontiac, Mich.; Fort Wayne, Ind. |
| Engines |
| | Vortec 4.3L V-6 (LU3) | Vortec 4.8L V-8 (LY2) | Vortec 5.3L V-8 FlexFuel (LMG) | Vortec 5.3L V-8 (LY5) |
| Type: | 4.3L V-6 | 4.8L V-8 | 5.3L V-8 | 5.3L V-8 |
| Displacement (cu in / cc): | 262 / 4300 | 293 / 4807 | 325 / 5328 | 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 | 3.78 x 3.62 / 96 x 92 |
| Block material: | cast iron | cast iron | cast iron | cast iron |
| Cylinder head material: | cast iron | cast aluminum | cast aluminum | cast aluminum |
| Valvetrain: | OHV, two valves per cylinder | OHV, two valves per cylinder | OHV, two valves per cylinder | OHV, two valves per cylinder |
| 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 | 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 | Active Fuel Management; sequential fuel injection |
| Compression ratio: | 9.2:1 | 9.1:1 | 9.9:1 | 9.9:1 |
| Horsepower (hp / kW @ rpm): | 195 / 145 @ 4600 | 295 / 220 @ 5600* | 320 / 240 @ 5200* | 315 / 235 @ 5200* |
| Torque (lb-ft / Nm @ rpm): | 260 / 353 @ 2800 | 305 / 414 @ 4600* | 340 / 461 @ 4200* | 338 / 458 @ 4400* |
| Recommended fuel: | regular unleaded | regular unleaded | E85 and/or regular unleaded | regular unleaded |
| Maximum engine speed (rpm): | 5600 | 6000 | 6000 | 6000 |
| Emissions controls: | close-coupled catalytic converter, 58X ignition, returnless fuel rail, fast-response O sensor |
| EPA estimated fuel (city / hwy): economy | 2WD: 15 / 20
4WD: 14 / 18 | 2WD: 14 / 19
4WD:: 14 / 18 | 2WD: 14 / 20
4WD:14 / 19 | 2WD:14 / 20
4WD:14 / 19 |
| 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. & avail.): | 3.23, 3.42, 3.73 and 4.10 | 3.42 |