Originally Posted by NANKET
Looking to buy a 2003 Cummins 4x4 auto. 180,000 miles. Well taken care of clean truck.

I would use it for general truck use and hauling cars on open trailer. Max 2500 miles a year. I won’t use it for daily driving.
What can you tell me about these trucks. Don’t tell me to buy a hemi truck, not going there.
When does any trans problems show up?
When do they need fuel system or injector work
Anything’s to Look out for or problems they have. Thanks!


Is it a 2003 or 2003.5?

The 2003.5 has the 48RE, that trans is pretty good if maintained.
The biggest issue is keeping the front band adjusted. Let it get away from you and you will ruin the front drum and smoke the front clutch.

Don’t use anything but ATF + 4 in it. I’ve seen hundreds of 250K plus mile units in the Reman program, nothing wrong with them except that front band and drum.