"With the ever rising cost of Dfuel I decided to get out of my powerstrokes and try a gm product gas 6.0. Have always liked the comfort and interiors of the gm's.After putting a few miles on the truck and some calculating it would have been much cheaper to drive the powerstrokes.This thing is really hurting on fuel economy for no more power or bang for the buck you get out of it"
"i bought this truck from my freind who had it from new . he had little trouble with it. the power is very good and its fast. i have a programmer, cold air intake and a 4in exsaust system added. the desiel is the way to go for power and mpg ."
"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"