I've got about 48K miles on my '01 and have had absolutely no problems with the tranny. 25% of my miles are towing a 13,500 lb. horse trailer, 25% towing a small horse trailer and the balance very light duty feed, dump, Home Depot runs. I have not done any engine mods and don't intend to do so. I've got the extended injector warrantee, but the engine is only covered to 100K miles. Since I'm trying to figure out how many more years I should keep the truck I'd like to hear from folks regarding their higher mileage Allison experiences with un-moded motors. My current thinking is two more years at which time the remaining motor warrantee will still look attractive to a buyer, but I'll go considerably longer if I believe the Allison can be good for 150K miles+.

If you do not FLOG it with a big box or tune I would suspect that you will get good service from it, however a tranny sure is cheaper then $45K for a new one.





Thttp://www.dieselplace.com/forum/smileys/Confused.gifNY

I personally feel.... just a feeling, not worth a whole lot, that the Allison is an easy 200,000 mile automatic when cared for and not abused.

Tony,


I agree a transmission rebuild is a lot less than a new truck. I kept my 91 Ford diesel for 10 years before trading for the Dmax (new trailer was just too much). If I were towing an RV I would really be thinking long term, but towing horses in a large trailer breakdowns take on a whole new dimension. The old mechanical engine systems seemed to degrade more gracefully. The new systems, while capable of fabulous performance, have more complex systems that don't seem to give any notice. I've already broken down once with what turned out to be simply in improper fuel filter installation.





Hoot,


I do agree about the Allison. Looking at the posts over the last year plus I just don't see failure reports unless the motor has aftermarket help.





Finally, in our CA climate vehicles do last a long time and this has been a simply great truck. We'll see what happens over the next two years.





Rick T

I understand frustration when it come to a breakdown..........


I usually never keep a truck more than 5 years or 100K, but diesels are supposed to run and with used dmax engines available and the ease of tranny upgrades, I plan on keeping this 2002 until the wheels fall off................


Thttp://www.dieselplace.com/forum/smileys/Big Smile.gifNY

I once read a GM press release back in 2000 that stated the Allison was designed for 200,000 miles of service before rebuild.

I know of one truck for sure with 340,000 miles on it, no work ever done on the trans...


Its an 02


Injectors are another storyhttp://www.dieselplace.com/forum/smileys/Ermm.gif

The big problem for the Allison will be the towing. Any tow vehicle will have transmission problems, though. Its just a matter of when (how long before...) The Allison is the best trans out there that I have read about.

If you are concerned, do a trans upgrade. If you talk to Hoot, it is the best part of the truck. High milage should not be a problem.

the truck i speak off , the mileage is prolly 80%+ towing

Kind of load? (Weight) Performance mods?

I have 358K on my Ally. 70% towing Rv's. This is one tuff tranny!! http://www.dieselplace.com/forum/smileys/Clap.gif

Oh yeah, no mods on truck.

It's not like this was a brand new trans in 2001. The 1000 series tras had already seen millions of miles before the GM HD line came out.