GMC C20 SIERRA GRANDE
Built: 1973 · Series: Trucks up to 3.5 t (Class N1)
More machines from model year 1973
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
GMC Lkw bis 3,5 t (class N1) – registration collective page of light GMC commercial vehicles Sierra, Silverado, Savana and Rally: six- and eight-cylinder from 3,900 to 7,500 cm³, gross weights around 3.5 tonnes
This page is a registration collective page rather than a single GMC range: class N1 denotes, in the European vehicle register, light commercial vehicles with a gross vehicle weight of up to 3.5 tonnes. Gathered here are GMC models that reach this limit, from the Sierra and Silverado pickups to the large Savana and Rally vans and older C/K models. GMC (General Motors Truck Company) is General Motors' commercial-vehicle brand, sharing platforms and technology largely with sister marque Chevrolet but marketed with its own trim and dealer network.
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The register lists 34 versions here from six- to eight-cylinder engines of 3,900 to 7,500 cm³, kerb weights of 2,050 to 3,380 kg and gross vehicle weights of 3,490 to 3,500 kg, confirming the classification into class N1 at its upper limit. Lengths range from 5,520 to 7,640 mm with widths of 1,950 to 2,480 mm.
GMC pickups and vans compete in North America with the practically identical Chevrolet models as well as with Ford and Ram in the large light-commercial segment, and in Europe are used mainly as imported and enthusiast vehicles. Gross weights just under 3.5 tonnes allow use with an ordinary car driving licence in many European countries.
On imported GMC models, key checks include frame corrosion, the condition of the leaf springs and the often large-displacement V8 engines, as well as the automatic transmission and brake system to US standards. On the Savana and Rally vans, the condition of the sliding doors and body seals should also be checked. Spare parts are readily available through American import trade thanks to the close technical kinship with Chevrolet.
Sources: SpecCodex register, model data: GMC Lkw bis 3,5 t (Klasse N1), GMC (General Motors, Hersteller)
Technical data
Engine
| Cylinders | 8correct |
|---|---|
| Displacement | 7,440 cm³correct |
Dimensions and weights
| Length | 5,600 mmcorrect |
|---|---|
| Width | 2,000 mmcorrect |
| Wheelbase | 3,350 mmcorrect |
| Unladen weight | 2,183 kgcorrect |
| Gross vehicle weight | 3,500 kgcorrect |
Drivetrain and chassis
| Wheels | 4correct |
|---|
Frequently asked questions
How much does the GMC C20 SIERRA GRANDE weigh?
The unladen weight is 2,183 kg.
What is the gross vehicle weight of the GMC C20 SIERRA GRANDE?
3,500 kg.
What engine does the GMC C20 SIERRA GRANDE have?
8 cylinders, 7,440 cm³ displacement.
What are the dimensions of the GMC C20 SIERRA GRANDE?
5,600 mm × 2,000 mm.
When was the GMC C20 SIERRA GRANDE built?
Production years: 1973.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 10 individual figures for this model. They come from 2 recorded sources; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
The technical data on this page comes from official vehicle registration records (RDW/Traficom), not from the manufacturer.
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Other models in this series
Sources: RDW — Dutch national vehicle register (retrieved August 2026) · How we check the data
Truck in 3D section
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