2004 GMC Safari Cargo Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2004 GMC Safari Cargo, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 6x139.7 (6x5.5") |
|---|---|
| Lug Nut / Bolt Size | 14x1.5 |
| Center Bore (CB) | 78.1 mm |
| Offset (ET) | 30 |
| Torque Specs | 100 ft-lbs (135 Nm) |
2004 Safari Cargo — Year-Specific Fitment Context
The 2004 GMC Safari Cargo is in year 2 of 3 using the 6x139.7 pattern (2003–2005). Wheels from any 2003–2005 GMC Safari Cargo are cross-compatible with the 2004 model. Across its full production run (1992–2005), the Safari Cargo has also used: 5x127.
GMC Safari Cargo Bolt Pattern by Year
The table below shows how the Safari Cargo's wheel specifications have changed over the years. The 2004 model year is highlighted.
Fitment Notes
The 2004 GMC Safari Cargo has a bolt pattern of 6x139.7.
Imperial Conversion: This bolt pattern is commonly referred to as 6x5.5" in imperial units. When searching for aftermarket wheels, you may see them listed as 6x5.5".
This means it is a 6 lug pattern with a circle diameter of 139.7mm. When shopping for aftermarket wheels, ensure the "lug pattern" or "PCD" matches these numbers.
Year-to-Year Fitment Context
In our dataset, GMC Safari Cargo appears from 1992 to 2005 (14 model years).
Across model years, this model appears with 2 bolt patterns (5x127, 6x139.7).
- Observed bolt-pattern variants for this model: 2
- Observed center-bore variants for this model: 1
- Observed lug-size variants for this model: 2
- Observed total offset span across years: 30.0 mm
6x139.7 Pattern Context
This bolt pattern appears on 1067 vehicles in our current database and is considered common.
Examples of other vehicles using 6x139.7:
2004 GMC Safari Cargo — Frequently Asked Questions
What is the bolt pattern for a 2004 GMC Safari Cargo?
The 2004 GMC Safari Cargo uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 78.1mm and the offset is 30mm.
What other years of GMC Safari Cargo have the same bolt pattern as the 2004?
The GMC Safari Cargo uses the 6x139.7 pattern from 2003 through 2005. Wheels from any of these model years are dimensionally compatible with the 2004, provided the offset and center bore also match.
What lug nut size does the 2004 GMC Safari Cargo use?
The 2004 GMC Safari Cargo uses 14x1.5 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
Can I use spacers on my 2004 GMC Safari Cargo?
Yes, but ensure the wheel spacers match the 6x139.7 bolt pattern and 78.1mm center bore. Also verify that you have enough thread engagement for your 14x1.5 hardware.
What is the factory wheel offset for a 2004 GMC Safari Cargo?
The OEM offset for the 2004 Safari Cargo is typically around 30mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
What does 30mm offset mean for the 2004 Safari Cargo?
An offset of 30mm means the wheel's mounting surface is 30mm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your GMC.
Fitment Checklist Before You Buy Wheels
- Torque lugs in a star pattern to 100 ft-lbs (135 Nm), then re-check torque after 50-100 km (30-60 miles).
- This model has multiple bolt-pattern records across years. Match wheels to exact year/trim before purchase.
Editorial Fitment Notes
GMC Safari Cargo has multiple wheel-fitment records across generations, so matching exact year and trim is important before ordering wheels.
- Observed production years in our database: 1992-2005 (14 model years).
- Observed bolt-pattern variants: 2 (5x127, 6x139.7).
- Observed total offset span across years: 30.0 mm.
- Observed center-bore variants: 1 | lug-size variants: 2.
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 2004 GMC Safari Cargo, please report it via our About page contact so we can verify and update this record.