"A good truck overall.155,000 miles, mostly hwy. Diesel. Had fuel injector problems, fuel pump problems, replaced starter and alt. Had a Dodge and Ford diesel befor this truck. Better tthan a Dodge but I honestly don't believe it can compare to the Ford Diesel, let alone the Ford looks. My next truck will definently be a F-250 with the 6.4 diesel engin."
"I have a 2006 GMC Duramax/Allison 2500HD LB. LOVE IT! Here goes. I had a problem with the ignition fuse burning out and the vehicle not starting after you shut down. The problem was found to be a short in a wire. Fine since. I have had a problem with Check Engine light when towing heavy loads. Traced to EGR valve. Replaced, then happened next day when towing...
Other than that the truck has been a dream. I Traded in (and took a monster loss) a 2005 6.0L powerstroke because it was the worst truck I have ever owned. Couldnt be happier with the power when towing. No mods and this rig will pull my 35' toy hauler up any grade w/o losing speed! Yep. I wish it got the MPG that the Cummins gets, but I guess I cant complain. You will get into this truck every time with a smile on your face. Guaranteed."
"I own a 2001Seirra SLT w/ the 8.1 vortec Motor. I had it lifted 8" running 35's, could fit 38's w/ some trimming. Pulled 410 hp
and 620 ft/lbs with 3 cheap mods. Pulls my 9000# boat over te mountains no problem.
Everyone should have one!"
"170K ON IT. THE ALTERNATOR DID FAIL AT 160K BUT NO OTHER PROBLEMS BEFORE OR AFTER. LOTS OF TOWING AND THERE IS NO LACK OF POWER. MY OTHER GMC HAD 240K WHEN I SOLD IT AND IS STILL RUNNING FINE. I BET YOU CAN GET 300K OUT OF THESE TRUCKS WITH PROPER MAINTENANCE."
"This truck has been the strongest truck I have ever owned. I can tow my motorcycles without any issues or my friends camper. The best part is almost 20 MPG on average with the Duramax diesel in it! If you can find one with under 100K miles, buy it. It was last 10x longer. The body is doing a great job of holding up even with Chicago winters, too.
The only reason I gave 4 stars instead of 5 on reliability was one time the truck died on the highway and would not start up. It went to the shop and no problems could be found because it started up the next day and hasn't had a problem since. That was two years ago."
"Best truck I have owned, not as stylish or comfortable as my last Ford 250, but way more realiable and powerful. Do yourself a favor and pony up the extra money for the diesel and allison tranny. It' more than worth it"
"I have had this vehicle for over 18 months now and it has been trouble free. I am getting used to this being a diesel since all my other SUVs and trucks have been gasoline powered. Overall a great truck, especially when hauling 2 adults, 3 kids and all their stuff."
"Purchased new in 2006, the vehicle has performed flawlessly. Excellent power and long trips are not tiring.
The Duramax Diesel mated to the Allison 6 speed automatic are a superb combination of torque and power.
Without a doubt, this is the finest vehicle I have ever owned."
"This truck has the smoothest ride of all diesel trucks. The power is phenominal and the engine is really quiet. Its was fast when i got it but after I put the Banks 6 gun tuner on it the power is rediculous. 2 of my friends each with a ford and dodge both have blown head gaskets with the banks. But my duramax has far outperformed either other trucks durability."