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2006 GMC Sierra 1500 SL1 4dr Extended Cab 8 ft. LB 2WD

The 2006 GMC Sierra 1500 SL1 4dr Extended Cab 8 ft. LB 2WD is a 295-hp 5.3-liter V8 with an automatic 4-speed and rear-wheel drive. It starts at $26,770 MSRP and is rated at 17 mpg combined.

It makes 295 horsepower. EPA fuel-economy estimates are 16 mpg city and 19 mpg highway (17 mpg combined).

The Sierra 1500 measures 249.0 inches long on a 157.5-inch wheelbase and has a curb weight of 4,886 lb.

Spec Value
Price
MSRP$26,770 ($43,156 *)
Engine
Engine Type5.3L Vortec V8
Displacement5.3 L
Horsepower295 hp
Drivetrain
Drive TypeRear-Wheel Drive
Transmission
TransmissionAutomatic 4-speed
1st Gear3.06
2nd Gear1.63
3rd Gear1
4th Gear0.7
Fuel Economy
City16 MPG
Highway19 MPG
Combined17 MPG
Recommended FuelRegular Gasoline
Tank Capacity34 gal
Tires & Wheels
Wheels Front17-in. steel
Wheels Rear17-in. steel
Tires FrontP245/70R17
Tires RearP245/70R17
Dimensions & Weight
Length249 in
Width78.5 in
Height70.8 in
Wheelbase157.5 in
Ground Clearance8 in
Curb Weight4,886 lbs
Interior
Headroom Front41 in
Headroom Rear38.4 in
Legroom Front41.3 in
Legroom Rear33.7 in
Shoulder Room Front65.2 in
Shoulder Room Rear66.3 in
Hip Room Front61.4 in
Hip Room Rear61.4 in
* Amount adjusted for inflation to 2026 dollars
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