1999 GMC Sierra 1500 Dimensions, Sizes & Specifications
Based on 24 trims — exact values when identical, ranges when trims differ. Generation: Second generation (GMT800).
- Length203.0 in – 246.4 in
- Width77.1 in – 78.5 in
- Height70.6 in – 73.8 in
- Wheelbase119.0 in – 157.5 in
- Curb weight3,923 lb – 4,748 lb
- Length203.0 in – 246.4 in
- Height70.6 in – 73.8 in
- Wheelbase119.0 in – 157.5 in
- Curb weight3,923 lb – 4,748 lb
- Width77.1 in – 78.5 in
Proportional exterior silhouette from catalog length, width and height. The explorer below is a systems map — different purpose, not a second silhouette.
Explore your 1999 GMC Sierra 1500
Interactive systems diagram for this model year — measure, check fitment, and open the matching SpecSizes tools. Schematic only; not photorealistic body styling.
- Dimensions
- Wheels
- Tires
- Wipers
- Interior
Available for this vehicle
- Dimensions
- Wheels
- Tires
- Wipers
- Interior
Select a system below or on the diagram. This schematic marks measurement areas — it is not body-accurate styling.
Catalog summaries
Exterior: 203.0 in – 246.4 in · 77.1 in – 78.5 in · 70.6 in – 73.8 in. Full dimensions
Wheels: bolt pattern 6x139.7, bore 78.1 mm. Wheel sizes
Tires: P235/75SR16.0 BSW AS, P245/75SR16.0 BSW AS, P235/75SR15.0 BSW AS, P245/75SR16.0 BSW AT…. Tire sizes
What do you want to check?
- Compare this vehicleSize vs a competitor
- See size by yearModel history & chart
- Will it fit in my garage?Door & bay clearance calculator
- Find cars similar in sizeExterior length, width & height neighbors
- Browse cars by sizeReverse-search by length, width & height
- Check tire sizeOEM tire sizes
- Check wiper sizeBlade lengths
- Check wheel sizeBolt pattern, bore, offset
- Wheel fitment & interchangeCompare donor or custom wheels
Exterior dimensions
| Length | 203.0 in – 246.4 in |
|---|---|
| Width | 77.1 in – 78.5 in |
| Height | 70.6 in – 73.8 in |
| Wheelbase | 119.0 in – 157.5 in |
Interior dimensions
| Front headroom | 39.9 in – 41.0 in |
|---|---|
| Rear headroom | 37.5 in – 38.4 in |
| Front legroom | 41.3 in – 41.7 in |
| Rear legroom | 28.7 in – 34.8 in |
| Front shoulder room | 65.0 in – 65.4 in |
| Rear shoulder room | 66.3 in – 67.6 in |
| Front hip room | 60.0 in – 61.4 in |
| Rear hip room | 61.5 in – 66.1 in |
Weight & capacities
| Curb weight | 3,923 lb – 4,748 lb |
|---|---|
| GVWR | 6,100 lb – 6,400 lb |
| Fuel tank | 25.0 gal – 34.0 gal |
| Max towing capacity | 3,500 lb – 6,500 lb |
Engine
| Torque | 260 – 285 lb-ft |
|---|
Torque shown in lb-ft as stored in the catalog.
Wheels, tires & maintenance sizes
Tire sizes Full tire size page → · Wheel fitment →
- P235/75SR16.0 BSW AS
- P245/75SR16.0 BSW AS
- P235/75SR15.0 BSW AS
- P245/75SR16.0 BSW AT
- 245/70R17
- 265/70R17
- 275/45R22
- 275/55R20
- 275/60R17
- 285/50R20
- 285/55R18
- 305/30R26
- 305/35R24
Wiper sizes Full wiper size page →
- Driver22"
- Passenger22"
Trim-by-trim dimensions (24 trims)
| Trim | Length | Width | Height | Wheelbase | Clearance | Curb wt |
|---|---|---|---|---|---|---|
| SL 4x2 Extended Cab 6.5 ft. box | 227.5 | 78.5 | 71.2 | 143.5 | — | 4235 |
| SL 4x2 Extended Cab 8 ft. box | 246.4 | 78.5 | 70.8 | 157.5 | — | 4442 |
| SL 4x2 Standard Cab 6.5 ft. box | 203.0 | 78.5 | 71.2 | 119.0 | — | 3923 |
| SL 4x2 Standard Cab 8 ft. box | 221.9 | 78.5 | 71.0 | 133.0 | — | 4023 |
| SL 4x4 Extended Cab 6.5 ft. box | 227.5 | 78.5 | 72.7 | 143.5 | — | 4621 |
| SL 4x4 Extended Cab 8 ft. box | 246.4 | 78.5 | 72.7 | 157.5 | — | 4748 |
| SL 4x4 Standard Cab 6.5 ft. box | 203.0 | 78.5 | 73.8 | 119.0 | — | 4248 |
| SL 4x4 Standard Cab 8 ft. box | 221.9 | 78.5 | 73.7 | 133.0 | — | 4365 |
| SLE 4x2 Extended Cab 141.5 in. WB | 218.5 | 77.1 | 70.6 | 141.5 | — | 4173 |
| SLE 4x2 Extended Cab 6.5 ft. box | 227.5 | 78.5 | 71.2 | 143.5 | — | 4235 |
| SLE 4x2 Extended Cab 8 ft. box | 246.4 | 78.5 | 70.8 | 157.5 | — | 4442 |
| SLE 4x2 Standard Cab 6.5 ft. box | 203.0 | 78.5 | 71.2 | 119.0 | — | 3923 |
| SLE 4x2 Standard Cab 8 ft. box | 221.9 | 78.5 | 71.0 | 133.0 | — | 4023 |
| SLE 4x4 Extended Cab 141.5 in. WB | 217.9 | 77.1 | 72.6 | 141.5 | — | 4566 |
| SLE 4x4 Extended Cab 6.5 ft. box | 227.5 | 78.5 | 72.7 | 143.5 | — | 4621 |
| SLE 4x4 Extended Cab 8 ft. box | 246.4 | 78.5 | 72.7 | 157.5 | — | 4748 |
| SLE 4x4 Standard Cab 6.5 ft. box | 203.0 | 78.5 | 73.8 | 119.0 | — | 4248 |
| SLE 4x4 Standard Cab 8 ft. box | 221.9 | 78.5 | 73.7 | 133.0 | — | 4365 |
| SLT 4x2 Extended Cab 141.5 in. WB | 218.5 | 77.1 | 70.6 | 141.5 | — | 4173 |
| SLT 4x2 Extended Cab 6.5 ft. box | 227.5 | 78.5 | 71.2 | 143.5 | — | 4235 |
| SLT 4x2 Extended Cab 8 ft. box | 246.4 | 78.5 | 70.8 | 157.5 | — | 4442 |
| SLT 4x4 Extended Cab 141.5 in. WB | 217.9 | 77.1 | 72.6 | 141.5 | — | 4566 |
| SLT 4x4 Extended Cab 6.5 ft. box | 227.5 | 78.5 | 72.7 | 143.5 | — | 4621 |
| SLT 4x4 Extended Cab 8 ft. box | 246.4 | 78.5 | 72.7 | 157.5 | — | 4748 |
Values in inches / pounds as stored. Ranges above reflect trim variation.
Same generation (Second generation (GMT800)): years 1999–2002. View model overview