Seems like a redcurrant thread.
Most of the following seem tb covered by other threads (my own mileage after each):
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- 4L60E transmission valve body (about every 30k until fixed properly by re-sleeving)
- Water pump @77k
- Intake Manifold gasket @77k
- Wiper board at 90k
- Alternator @100k
- Trip Speedo @120k
- Front differential pinion seal @126k
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And, just today, one more:
- Hose quick-connect at manifold: corroded/leaking. Apparently one more fairly-predictable item. 137k
'98 'burb, K-1500, Vortec 5.7, 4wd