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Old 05-10-2021, 03:55 PM   #1
DeadheadNM
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Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,287
I'm now in the diesel club w a 99 6.5L HO engine - help

Just completed a deal for a 1999 K2500 GMC Suburban w a 6.5L HO engine that has 42k total miles. It's a rig that I 'm getting directly from a fire department and it's been well maintained.

I've read these 6.5s can benefit from relocation of the pump mounted driver (whatever that is) and are prone to harmonic balancer failures. Any advice on what steps to follow or aftermarket items to purchase in order to keep the engine running reliably for many miles?
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