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2003 GMC Sierra 1500 Specs - Exterior and Interior Dimensions
| Body | Regular Cab 6.5ft bed | Regular Cab 8ft bed | Extended Cab 6.5ft bed | Extended Cab 8ft bed | Crew Cab 6.5ft bed |
| Wheelbase | 3,023 mm | 3,378 mm | 3,645 mm | 4,001 mm | 3,886 mm |
| Length | 5,154 mm | 5,636 mm | 5,776 mm | 6,264 mm | 6,025 mm |
| Width | 1,994 mm | 1,994 mm | 1,994 mm | 1,994 mm | 1,994 mm |
| Height | 1,808 mm | 1,803 mm | 1,808 mm | 1,798 mm | 1,956 mm |
| Curb Weight | 1,933 kg | 1,995 kg | 2,098 kg | 2,141 kg | 2,425 kg |
| Fuel Capacity | 98 L | 129 L | 98 L | 129 L | 98 L |
| Headroom, Row 1 | 1,041 mm | 1,041 mm | 1,041 mm | 1,041 mm | 1,034 mm |
| Shoulder Room, Row 1 | 1,560 mm | 1,560 mm | 1,560 mm | 1,560 mm | 1,560 mm |
| Hip Room, Row 1 | 1,623 mm | 1,623 mm | 1,623 mm | 1,623 mm | 1,623 mm |
| Legroom, Row 1 | 1,049 mm | 1,049 mm | 1,049 mm | 1,049 mm | 1,049 mm |
| Headroom, Row 2 | 0 mm | 0 mm | 975 mm | 975 mm | 1,021 mm |
| Shoulder Room, Row 2 | 0 mm | 0 mm | 1,654 mm | 1,654 mm | 1,654 mm |
| Hip Room, Row 2 | 0 mm | 0 mm | 1,560 mm | 1,560 mm | 1,560 mm |
| Legroom, Row 2 | 0 mm | 0 mm | 856 mm | 856 mm | 993 mm |
| Total Legroom | 1,049 mm (over 1 row) | 1,049 mm (over 1 row) | 1,905 mm (over 2 rows) | 1,905 mm (over 2 rows) | 2,042 mm (over 2 rows) |
What Our Members Are Saying about the Seat Room and Comfort of the 2003 GMC Sierra 1500
| 2003 GMC Sierra 1500 Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2004 | 4dr Extended Cab 6.5ft bed 295-horsepower 5.3L V8 4-speed automatic 4WD w/low range |
Better than most competitors see full GMC Sierra 1500 review |
2003 GMC Sierra 1500 Specs: Engines, Transmissions, and Drivetrains
| Engines | Transmissions | Drivetrains |
| 4.3L V6 OHV-2v 200 hp@4600 260 lb-ft@2800 |
4-speed automatic | RWD |
| 4WD, part-time w/low range | ||
| 5-speed manual | RWD | |
| 4WD, part-time w/low range | ||
| 4.8L V8 OHV-2v 275 hp@5200 285 lb-ft@4000 |
4-speed automatic | RWD |
| 4WD, part-time w/low range | ||
| 4WD w/low range | ||
| 5-speed manual | RWD | |
| 4WD, part-time w/low range | ||
| 4WD w/low range | ||
| 5.3L V8 OHV-2v 285 hp@5200 325 lb-ft@4000 |
4-speed automatic | RWD |
| 4WD, part-time w/low range | ||
| 4WD w/low range | ||
| 6.0L V8 OHV-2v 300 hp@4400 360 lb-ft@4000 |
4-speed automatic | RWD |
| 4WD w/low range | ||
| 6.0L V8 OHV-2v 325 hp@5000 370 lb-ft@4000 |
4-speed automatic | AWD |
See TrueDelta's information for all Pickups
See TrueDelta's information for all GMC models.
