2004 GMC Safari Passenger 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 Passenger, 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 Passenger — Year-Specific Fitment Context
The 2004 GMC Safari Passenger is in year 2 of 3 using the 6x139.7 pattern (2003–2005). Wheels from any 2003–2005 GMC Safari Passenger are cross-compatible with the 2004 model. Across its full production run (1992–2005), the Safari Passenger has also used: 5x127.
GMC Safari Passenger Bolt Pattern by Year
The table below shows how the Safari Passenger's wheel specifications have changed over the years. The 2004 model year is highlighted.
Fitment Notes
The 2004 GMC Safari Passenger 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 Passenger 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 Passenger — Frequently Asked Questions
What is the bolt pattern for a 2004 GMC Safari Passenger?
The 2004 GMC Safari Passenger 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 Passenger have the same bolt pattern as the 2004?
The GMC Safari Passenger 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 is the center bore of a 2004 GMC Safari Passenger?
The factory center bore (hub bore) for the 2004 GMC Safari Passenger is 78.1mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
Why is matching the 78.1mm center bore important for the 2004 Safari Passenger?
The 78.1mm 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.
How tight should I torque the lug nuts on a 2004 GMC Safari Passenger?
Refer to your owner's manual for exact specs, but always tighten the 14x1.5 hardware in a star or crisscross pattern. Re-torque after the first 50 miles of driving.
What is the factory wheel offset for a 2004 GMC Safari Passenger?
The OEM offset for the 2004 Safari Passenger is typically around 30mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
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 Passenger 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 Passenger, please report it via our About page contact so we can verify and update this record.