2003 GMC Sonoma Regular Cab Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2003 GMC Sonoma Regular Cab, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 5x120.65 (5x4.75") |
|---|---|
| Lug Nut / Bolt Size | 12x1.5 |
| Center Bore (CB) | 70.3 mm |
| Offset (ET) | 0-13 |
| Torque Specs | 80 ft-lbs (108 Nm) |
2003 Sonoma Regular Cab — Year-Specific Fitment Context
The 2003 model year is the final year of the GMC Sonoma Regular Cab's 5x120.65 bolt pattern run (since 1992). Wheels from any 1992–2003 GMC Sonoma Regular Cab are cross-compatible with the 2003 model.
GMC Sonoma Regular Cab Bolt Pattern by Year
The table below shows how the Sonoma Regular Cab's wheel specifications have changed over the years. The 2003 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 1992 | 5x120.65 | 70.3 | 0-13 |
| 1993 | 5x120.65 | 70.3 | 0-13 |
| 1994 | 5x120.65 | 70.3 | 0-13 |
| 1995 | 5x120.65 | 70.3 | 0-13 |
| 1996 | 5x120.65 | 70.3 | 0-13 |
| 1997 | 5x120.65 | 70.3 | 0-13 |
| 1998 | 5x120.65 | 70.3 | 0-13 |
| 1999 | 5x120.65 | 70.3 | 0-13 |
| 2000 | 5x120.65 | 70.3 | 0-13 |
| 2001 | 5x120.65 | 70.3 | 0-13 |
| 2002 | 5x120.65 | 70.3 | 0-13 |
| ▸ 2003 | 5x120.65 | 70.3 | 0-13 |
Fitment Notes
The 2003 GMC Sonoma Regular Cab has a bolt pattern of 5x120.65.
Imperial Conversion: This bolt pattern is commonly referred to as 5x4.75" in imperial units. When searching for aftermarket wheels, you may see them listed as 5x4.75".
This means it is a 5 lug pattern with a circle diameter of 120.65mm. When shopping for aftermarket wheels, ensure the "lug pattern" or "PCD" matches these numbers.
Year-to-Year Fitment Context
In our dataset, GMC Sonoma Regular Cab appears from 1992 to 2003 (12 model years).
Across recorded model years, this model generally keeps the same bolt pattern.
- Observed bolt-pattern variants for this model: 1
- Observed center-bore variants for this model: 1
- Observed lug-size variants for this model: 1
- Observed total offset span across years: 13.0 mm
5x120.65 Pattern Context
This bolt pattern appears on 202 vehicles in our current database and is considered moderately common.
Examples of other vehicles using 5x120.65:
2003 GMC Sonoma Regular Cab — Frequently Asked Questions
What is the bolt pattern for a 2003 GMC Sonoma Regular Cab?
The 2003 GMC Sonoma Regular Cab uses a 5x120.65 bolt pattern (also called lug pattern or PCD). The center bore is 70.3mm and the offset is 0-13mm.
What other years of GMC Sonoma Regular Cab have the same bolt pattern as the 2003?
The GMC Sonoma Regular Cab uses the 5x120.65 pattern from 1992 through 2003. Wheels from any of these model years are dimensionally compatible with the 2003, provided the offset and center bore also match.
What does 0-13mm offset mean for the 2003 Sonoma Regular Cab?
An offset of 0-13mm means the wheel's mounting surface is 0-13mm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your GMC.
What is the center bore of a 2003 GMC Sonoma Regular Cab?
The factory center bore (hub bore) for the 2003 GMC Sonoma Regular Cab is 70.3mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
How do I measure the bolt pattern on my 2003 GMC?
The 2003 Sonoma Regular Cab uses a 5x120.65 pattern. For 4, 6, or 8-lug wheels, measure center-to-center across opposite holes. For 5-lug, measure from the center of one hole to the back of the opposite hole.
Why is matching the 70.3mm center bore important for the 2003 Sonoma Regular Cab?
The 70.3mm center bore ensures the wheel is perfectly centered on the hub. If the wheel is lug-centric instead of hub-centric, you may experience steering wheel vibration at highway speeds.
Fitment Checklist Before You Buy Wheels
- Verify thread pitch before installation; M12x1.25 and M12x1.5 are not interchangeable.
- Torque lugs in a star pattern to 80 ft-lbs (108 Nm), then re-check torque after 50-100 km (30-60 miles).
Editorial Fitment Notes
GMC Sonoma Regular Cab is generally consistent in bolt-pattern records across model years, but offset and hardware should still be validated before purchase.
- Observed production years in our database: 1992-2003 (12 model years).
- Observed bolt-pattern variants: 1 (5x120.65).
- Observed total offset span across years: 13.0 mm.
- Observed center-bore variants: 1 | lug-size variants: 1.
Data Quality & Review
Source note: Compiled from manufacturer fitment references, historical wheel data, and internal normalization rules.
Last reviewed: 2026-05-26 | Reviewed by: Bolt Pattern HQ Editorial Team
If you find a discrepancy for 2003 GMC Sonoma Regular Cab, please report it via our About page contact so we can verify and update this record.