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hey guys. ive been lookin around for a 1/2 ton 6.5 cheap and found one for 1700 probly gonna try to get him down to 1200 0r 1300. its a 96 and has just shy of 400,000.

mainly what im wondering is how reliable are these engines with that many miles? how pricey is a rebuild for them? what do I need to look at?
 

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Treat right and fix some of the little nagging issues and it should last you. I'm driving one with 400k on the odometer now. Engine was rebuilt about 100k ago by the previous owner to fix a problem that was actually the PMD.
 

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At 400K there can not be much that is original which can be a good thing because lots of stuff has likely already been rebuilt and or replaced.
 

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No more than one would expect of any vehicle with 400k on it.

I know the original owner of mine that put 300k of the 400k on it.

Things that were replaced:
Engine, Tranny, & Turbo rebuilt at 300k (Engine later was determined not necessary)
A/C compressor, rear evaporator, and starter at 350k
Alternator at 390k
IP and Lift pump at 100k (replaced by GM under warranty)


Things I've replaced:
Lift pump ($80)
PMD (Fixed the problem the engine was originally rebuilt to fix) ($225)
Starter ($210)
A/C Blower motor ($30)
Wastegate Solenoid ($40)
Harmonic Balancer and crank pulley ($250)
Batteries ($250)

Known things that are currently broken:
Plastic front grill is cracked
Rear WW hose is brittle and crumbling
Intermittent wipers are flakey.
Weird "fishbiting" issue with engine (may be IP)
Rear main seal leaks
Vacuum lines are brittle and prone to cracking
A/C mixer or recirc door is clunking
Door locks are finicky(have to jiggle the key)


Things I expect will need attention within the next 100k or so miles
Wheel bearings
Suspension parts (shocks, bushings, springs, etc...)
Window & Lock motors
Wiper motor (front)
Brake system (is still all original..no problems yet knock on wood)
Power Steering system.
 

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like the other guys said its probably got alot of new parts. just make sure it runs good and you should be alright
 
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