2006 GMC Sierra 1500 Extended Cab Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2006 GMC Sierra 1500 Extended Cab, 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.
2006 Sierra 1500 Extended Cab — Year-Specific Fitment Context
The 2006 GMC Sierra 1500 Extended Cab is in year 8 of 15 using the 6x139.7 pattern (1999–2013). Wheels from any 1999–2013 GMC Sierra 1500 Extended Cab are cross-compatible with the 2006 model.
GMC Sierra 1500 Extended Cab Bolt Pattern by Year
The table below shows how the Sierra 1500 Extended Cab's wheel specifications have changed over the years. The 2006 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 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 |
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 2006 GMC Sierra 1500 Extended Cab
For your 2006 GMC Sierra 1500 Extended Cab, the 6x139.7 bolt pattern is shared with 1999-2013 models. The 78.1mm center bore is critical: aftermarket wheels often have a larger bore, requiring hub-centric rings to prevent vibration and ensure proper load distribution. Offset must stay within 20-30mm; deviations risk rubbing or poor handling. Always use 14x1.5 lug nuts with the correct seat (cone or ball) matching the wheel. Improper seating can cause wheel loss. Verify thread engagement and torque to spec.
Historical Fitment Data Reference
In our dataset, GMC Sierra 1500 Extended Cab appears from 1999 to 2013 (15 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
- ✅ Re-torque lug nuts after 50-100 miles of driving to account for settling.
- ✅ Avoid wheels with offset below 20mm; they may rub suspension components.
- ✅ Check that aftermarket wheels include hub-centric rings or have a 78.1mm bore to avoid vibrations.
- ⚠️ 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).
Ready to upgrade or perform maintenance?
🛒 Shop Tools & Accessories on AmazonAs an Amazon Associate, I earn from qualifying purchases.
2006 GMC Sierra 1500 Extended Cab — Frequently Asked Questions
What is the bolt pattern for a 2006 GMC Sierra 1500 Extended Cab?
The 2006 GMC Sierra 1500 Extended Cab 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 Sierra 1500 Extended Cab have the same bolt pattern as the 2006?
The GMC Sierra 1500 Extended Cab uses the 6x139.7 pattern from 1999 through 2013. Wheels from any of these model years are dimensionally compatible with the 2006, provided the offset and center bore also match.
What does 20-30mm offset mean for the 2006 Sierra 1500 Extended Cab?
An offset of 20-30mm means the wheel's mounting surface is 20-30mm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your GMC.
What is the PCD for a 2006 GMC Sierra 1500 Extended Cab?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2006 Sierra 1500 Extended Cab, the PCD is 6x139.7.
Will wheels from another GMC fit my 2006 Sierra 1500 Extended Cab?
Only if they share the exact same 6x139.7 bolt pattern, a compatible offset, and a center bore equal to or larger than 78.1mm.
Can I put aftermarket wheels on my 2006 GMC Sierra 1500 Extended Cab?
Absolutely. Just ensure the aftermarket wheels have a 6x139.7 bolt pattern, an offset near 20-30mm, and a center bore of at least 78.1mm (using hub rings if larger).
Need more vehicle fitment data?
Access our complete, raw JSON/CSV database of over 11,000+ vehicles for your next app or project.
Get the Full Dataset