2003 GMC Sierra 2500 HD Extended Cab Specs, Features & Options
Here's everything you need to know about each trim in the 2003 GMC Sierra 2500 HD Extended Cab lineup. Compare pricing, specs, key features and more.
1 of 6  Sierra 2500 HD Extended Cab SLT Pickup 4D 8 ft | 2 of 6 Sierra 2500 HD Extended Cab SLE Pickup 4D 8 ft | 3 of 6 Sierra 2500 HD Extended Cab Pickup 4D 8 ft | 4 of 6 Sierra 2500 HD Extended Cab Pickup 4D 6 1/2 ft | 5 of 6 Sierra 2500 HD Extended Cab SLT Pickup 4D 6 1/2 ft | 6 of 6 Sierra 2500 HD Extended Cab SLE Pickup 4D 6 1/2 ft | |||
|---|---|---|---|---|---|---|---|---|
| Fair Market Price | $6,589 | $7,200 | $7,557 | $11,764 | $11,908 | $12,628 | ||
| Fuel Type | Gas | Gas | Gas | Diesel | Diesel | Diesel | ||
| Horsepower | 300 @ 4400 RPM | 300 @ 4400 RPM | 300 @ 4400 RPM | 300 @ 3100 RPM | 300 @ 3100 RPM | 300 @ 3100 RPM | ||
| Torque | 360 lb-ft | 360 lb-ft | 360 lb-ft | 520 lb-ft | 520 lb-ft | 520 lb-ft | ||
| Towing Capacity | 12,000 lbs | 12,000 lbs | 12,000 lbs | 12,000 lbs | 12,000 lbs | 12,000 lbs | ||
| Payload | 3,372 pounds | 3,372 pounds | 3,372 pounds | 3,569 pounds | 3,569 pounds | 3,569 pounds | ||
| Body Styles | Pickup | Pickup | Pickup | Pickup | Pickup | Pickup | ||
| Engine | V8, 6.0 Liter | V8, 6.0 Liter | V8, 6.0 Liter | V8, Turbo Diesel, 6.6L | V8, Turbo Diesel, 6.6L | V8, Turbo Diesel, 6.6L | ||
| Curb Weight | 5,556 pounds | 5,556 pounds | 5,556 pounds | 5,402 pounds | 5,402 pounds | 5,402 pounds |
| Emergency & Security Services | Optional | Optional | Optional | Optional | Optional | Optional | ||
| Child Seat Anchors | Standard | Standard | Standard | Standard | Standard | Standard | ||
| Child Door Locks | Standard | Standard | Optional | Optional | Standard | Standard |
| Cruise Control | Optional | Optional | Optional | Optional | Optional | Optional | ||
| Navigation System | Optional | Optional | Optional | Optional | Optional | Optional | ||
| Hands Free Phone | Optional | Optional | Optional | Optional | Optional | Optional |
| Cruise Control | Optional | Optional | Optional | Optional | Optional | Optional |
| Torque | 360 @ 4400 RPM | 360 @ 4400 RPM | 360 @ 4400 RPM | 520 @ 3100 RPM | 520 @ 3100 RPM | 520 @ 3100 RPM |
| Leather Seats | Optional | Optional | Optional | Optional | Optional | Optional | ||
| Dual Power Front Seats | Optional | Optional | Optional | Optional | Optional | Optional | ||
| Power Driver's Seat | Optional | Optional | Optional | Optional | Optional | Optional |
| Power Windows | Optional | Optional | Optional | Optional | Optional | Optional | ||
| Tilt Steering Wheel | Standard | Standard | Standard | Standard | Standard | Standard |
| Alloy Wheels | Optional | Optional | Optional | Optional | Optional | Optional |
| Drivetrain | 2WD | 2WD | 2WD | 4WD | 4WD | 4WD | ||
| Recommended Fuel | Not Available | Not Available | Not Available | Diesel | Diesel | Diesel | ||
| Transmission Type | Automatic | Automatic | Automatic | Automatic | Automatic | Automatic |
| Bed Length | 8 feet | 8 feet | 8 feet | 6.5 feet | 6.5 feet | 6.5 feet | ||
| Curb Weight | 5556 pounds | 5556 pounds | 5556 pounds | 5402 pounds | 5402 pounds | 5402 pounds | ||
| Fuel Capacity | 34 gallons | 34 gallons | 34 gallons | 26 gallons | 26 gallons | 26 gallons | ||
| Front Head Room | 41 inches | 41 inches | 41 inches | 41 inches | 41 inches | 41 inches | ||
| Front Leg Room | 41.3 inches | 41.3 inches | 41.3 inches | 41.3 inches | 41.3 inches | 41.3 inches | ||
| Minimum Ground Clearance | 9.1 inches | 9.1 inches | 9.1 inches | 9.1 inches | 9.1 inches | 9.1 inches | ||
| Overall Length | 246.6 inches | 246.6 inches | 246.6 inches | 227.7 inches | 227.7 inches | 227.7 inches | ||
| Payload Capacity | 3372 pounds | 3372 pounds | 3372 pounds | 3569 pounds | 3569 pounds | 3569 pounds | ||
| Front Shoulder Room | 65.2 inches | 65.2 inches | 65.2 inches | 65.2 inches | 65.2 inches | 65.2 inches | ||
| Truck Bed Volume | 71 feet | 71 feet | 71 feet | 56 feet | 56 feet | 56 feet | ||
| Turning Diameter | 50.8 feet | 50.8 feet | 50.8 feet | 46.8 feet | 46.8 feet | 46.8 feet | ||
| Wheel Base | 157.5 inches | 157.5 inches | 157.5 inches | 143.5 inches | 143.5 inches | 143.5 inches | ||
| Width with mirrors | 79.7 inches | 79.7 inches | 79.7 inches | 79.7 inches | 79.7 inches | 79.7 inches |
FAQs
Does the 2003 GMC Sierra 2500 HD Extended Cab have a turbo?
Yes, the following 2003 Sierra 2500 HD Extended Cab trims have turbo engines: Pickup 4D 6 1/2 ft with a V8, Turbo Diesel, 6.6L, SLT Pickup 4D 6 1/2 ft with a V8, Turbo Diesel, 6.6L, etc. The following 2003 Sierra 2500 HD Extended Cab trims do not have turbo engines: SLT Pickup 4D 8 ft with a V8, 6.0 Liter, SLE Pickup 4D 8 ft with a V8, 6.0 Liter, etc. For a more detailed look at the 2003 Sierra 2500 HD Extended Cab specs, features and options check out Kelley Blue Book's 2003 GMC Sierra 2500 HD Extended Cab specs page.
Is the GMC Sierra 2500 HD Extended Cab underpowered?
It depends on your definition of underpowered. All 2003 Sierra 2500 HD Extended Cab trim variations have 300 horsepower. For a more detailed look at the 2003 Sierra 2500 HD Extended Cab specs, features and options check out Kelley Blue Book's 2003 GMC Sierra 2500 HD Extended Cab specs page.
How much horsepower does a 2003 Sierra 2500 HD Extended Cab have?
All 2003 Sierra 2500 HD Extended Cab trim variations have 300 horsepower. For a more detailed look at the 2003 Sierra 2500 HD Extended Cab specs, features and options check out Kelley Blue Book's 2003 GMC Sierra 2500 HD Extended Cab specs page.
All 2003 GMC Sierra 2500 HD Extended Cab Trims and Styles
- 2003 GMC Sierra 2500 HD Extended Cab SLT Pickup 4D 8 Ft
- 2003 GMC Sierra 2500 HD Extended Cab SLE Pickup 4D 8 Ft
- 2003 GMC Sierra 2500 HD Extended Cab Pickup 4D 8 Ft
- 2003 GMC Sierra 2500 HD Extended Cab Pickup 4D 6 1/2 Ft
- 2003 GMC Sierra 2500 HD Extended Cab SLT Pickup 4D 6 1/2 Ft
- 2003 GMC Sierra 2500 HD Extended Cab SLE Pickup 4D 6 1/2 Ft