DD..
Motor is 6.6L... The key is not the HP, but the torque - which is 660 foot pounds at 1600 rpm...
Oil change interval is determined by the DIC (computer onboard)... GM spent millions of dollars developing the DIC and if you follow it you will have protection in the event of a warranty claim... The computer keeps track of everything you do, the number of starts, engine hours, etc... Typical oil change intervals will be 5000-7000 miles...
Yes, if you put any kind of tuner chip on it, flash the ECU, nitrous, eliminate the regen (DPF) pipe, etc. etc. ad nauseum, your entire vehicle warranty is VOID, gone, nada, TOAST, (capiche?
- and the ECU 'knows' (like the Shadow knows, heh, heh, heh,) -
A letter from the new Government Motors was just sent to the surviving dealers that to perform ANY warranty work they have to take an electronic picture of the tattle tale screen on your computer and send it to GM for approval prior to any work performed or the dealer will not be paid... The party is over... Lots of depression and moaning over on the Duramax Diesel boards - and at the dealers, who were making good money from GM from rebuilding Allisons, etc. that some guy ran 700 HP into...
Power train warranty is 10 / 100,000
Tow rating is 13,000 (roughly - lots of 'it depends' in there)
OK, latest news is I have changed my user name to a boat name... I will be going to get said boat this coming weekend... More news then...