I had heard of some general fuel delivery problems and IP failures with the 6.2
The only real experience I have had is with the 6.5 TD I bought new in 1994 and sold last year to a local contractor with 373K miles......still running like new! That engine was the one GM used in the military HUMMER...its bullet proof if maintained.
It had a recall on the IP by Chevy/GM because of premature failures.....but what premature failure?....I had already 200K on it before mine went. It was the best American Made vehicle I have ever owned! Boy do I miss that tank!

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FRED

Daily Driver: 98 E300TD 199K
Hobby Car: 69 Austin Mini
Past Diesels: 84 300SD, 312K
87 300SDL, 251K
94 Chev. K-1500 6.5Ltr.TD, 373K