2005 GMC Savana 1500 Cargo Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2005 GMC Savana 1500 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) | 20-30 |
| Torque Specs | 100 ft-lbs (135 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
2005 Savana 1500 Cargo — Year-Specific Fitment Context
The 2005 GMC Savana 1500 Cargo is in year 10 of 19 using the 6x139.7 pattern (1996–2014). Wheels from any 1996–2014 GMC Savana 1500 Cargo are cross-compatible with the 2005 model.
GMC Savana 1500 Cargo Bolt Pattern by Year
The table below shows how the Savana 1500 Cargo's wheel specifications have changed over the years. The 2005 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 1996 | 6x139.7 | 78.1 | 20-30 |
| 1997 | 6x139.7 | 78.1 | 20-30 |
| 1998 | 6x139.7 | 78.1 | 20-30 |
| 1999 | 6x139.7 | 78.1 | 20-30 |
| 2000 | 6x139.7 | 78.1 | 20-30 |
| 2001 | 6x139.7 | 78.1 | 20-30 |
| 2002 | 6x139.7 | 78.1 | 20-30 |
| 2003 | 6x139.7 | 78.1 | 20-30 |
| 2004 | 6x139.7 | 78.1 | 20-30 |
| ▸ 2005 | 6x139.7 | 78.1 | 20-30 |
| 2006 | 6x139.7 | 78.1 | 20-30 |
| 2007 | 6x139.7 | 78.1 | 20-30 |
| 2008 | 6x139.7 | 78.1 | 20-30 |
| 2009 | 6x139.7 | 78.1 | 20-30 |
| 2010 | 6x139.7 | 78.1 | 20-30 |
| 2011 | 6x139.7 | 78.1 | 20-30 |
| 2012 | 6x139.7 | 78.1 | 20-30 |
| 2013 | 6x139.7 | 78.1 | 20-30 |
| 2014 | 6x139.7 | 78.1 | 20-30 |
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:
Expert Buying Guide for 2005 GMC Savana 1500 Cargo
For your 2005 GMC Savana 1500 Cargo, the 6x139.7 bolt pattern is shared across 1996–2014 models, offering wide cross-compatibility. Critical: the 78.1mm center bore requires hub-centric rings for aftermarket wheels to prevent vibration and ensure load support. Offset must stay within 20–30mm; deviations risk rubbing or bearing stress. Always use 14x1.5 lug nuts with correct seat type (cone or ball) matching your wheel—mismatched seats cause loosening. Re-torque after 50–100 miles. Verify wheel load rating exceeds vehicle GVWR.
Historical Fitment Data Reference
In our dataset, GMC Savana 1500 Cargo appears from 1996 to 2014 (19 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: 50.0 mm
Quick Tips & Safety Warnings
- ✅ Use hub-centric rings (78.1mm ID to aftermarket bore) to avoid vibration and center wheel properly.
- ✅ Stick to offset 20–30mm; lower offset may rub suspension, higher offset may contact brake calipers.
- ✅ Re-torque lug nuts to spec (140 ft-lbs) after 50–100 miles; check for correct 14x1.5 thread pitch and seat type.
- ⚠️ This fitment uses a wide offset range. Check brake clearance and fender clearance before buying wheels.
- ⚠️ Torque lugs in a star pattern to 100 ft-lbs (135 Nm), then re-check torque after 50-100 km (30-60 miles).
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2005 GMC Savana 1500 Cargo — Frequently Asked Questions
What is the bolt pattern for a 2005 GMC Savana 1500 Cargo?
The 2005 GMC Savana 1500 Cargo uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 78.1mm and the offset is 20-30mm.
What other years of GMC Savana 1500 Cargo have the same bolt pattern as the 2005?
The GMC Savana 1500 Cargo uses the 6x139.7 pattern from 1996 through 2014. Wheels from any of these model years are dimensionally compatible with the 2005, provided the offset and center bore also match.
What is the center bore of a 2005 GMC Savana 1500 Cargo?
The factory center bore (hub bore) for the 2005 GMC Savana 1500 Cargo is 78.1mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
Can I use spacers on my 2005 GMC Savana 1500 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.
Why is matching the 78.1mm center bore important for the 2005 Savana 1500 Cargo?
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 2005 GMC Savana 1500 Cargo?
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.
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