2009 GMC Sierra Light Duty Regular Cab - Curb Weight & Payload
  GVWR (lb / kg) Base Curb Weight (lb / kg)* Payload (lb / kg)* Weight Distribution (% front / rear)
2WD
Reg. Cab Standard Box: 6400 / 2903 4558 / 2068 1842 / 836 58 / 42
Reg. Cab Long Box: 6400 / 2903 4751 / 2155 1649 / 748 58 / 42
4WD
Reg. Cab Standard Box: 6400 / 2903 4798 / 2176 1602 / 727 59 / 41
Reg. Cab Long Box: 6800 / 3084 5007 / 2271 1802 / 817 59 / 41
*5.3L with six-spd transmission

Chassis/Suspension
Front: 2WD and 4WD: independent coil-over-shock; monotube shock absorbers
Rear: solid axle with semi-elliptic, variable-rate, two-stage multileaf springs; splayed shock absorbers; monotube shocks available
Steering type: power-assisted rack-and-pinion (2WD and 4WD)
Steering ratio: 19.2:1
Steering wheel turns, lock-to-lock: 3.5
Turning circle, curb-to-curb (ft / m)
2WD/4WD Reg. Cab Standard Box: 39.7 / 12.1
2WD/4WD Reg. Cab Long Box: 44.3 / 15.4
Brakes
Type: 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
Total swept area (sq in / sq cm) disc/drum brakes: front: 301.2 / 1944
rear: 172.4 / 1112
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
22-inch (dealer installed)
Tires: P245/70R17 all season, blackwall or white letter
P265/70R17 AL2, 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
22-inch (dealer installed)

Trailering
Trailer towing maximum with ball hitch (lb / kg):
Reg. Cab, Std. Box 2WD: 9200 / 4173 (5.3L w/ HD cooling, 6-spd and 3.42 axle)
4WD: 8900 / 4037 (5.3L w/ HD cooling, 6-spd and 3.42 axle)
Reg. Cab, Long Box 2WD: 10000 / 4536 (5.3L w/ HD cooling, 6-spd and 3.42 axle)
4WD: 9800 / 4445 (5.3L w/ HD cooling, 6-spd and 3.42 axle)
* SAE certified.