There have been 3 technical service bulletins issued for the 2006 Hummer H1.
| Bulletin Date: | Jun. 1, 2008 |
| Component: | Front suspension hub. |
| Bulletin Summary: | Halfshaft retaining bolt with pre-applied thread locker for all h1 models and model years. |
| Vehicles covered in this TSB: |
2003 Hummer H1,
2004 Hummer H1,
2005 Hummer H1,
2006 Hummer H1.
|
| Bulletin Date: | Mar. 1, 2008 |
| Component: | Cooling system fan. |
| Bulletin Summary: | Hummer - geared fan drive replacement - all 2006 model year alpha vehicles. |
| Vehicles covered in this TSB: |
2006 Hummer H1.
|
| Bulletin Date: | Feb. 1, 2007 |
| Component: | Electrical system. |
| Bulletin Summary: | Electrical diagnostics. Illumination of the check engine light, and abs light. And an inoperative central tire inflation system (ctis). |
| Vehicles covered in this TSB: |
2006 Hummer H1,
2006 Hummer H2,
2006 Hummer H3.
|