Have 370,000 miles on mine. Minimal issues. One exhaust valve was burned at 350k.One transmission at 200k I did both heads myself used. I change oil every 3000 with STP. Change transmission fluid every year. 18-20 mpg tows my bobcat trailer and all tools . Burns no oil pressure 20psi hot idle 40 at speed. One fuel Spyder I changed at 300k Ignition modules and dist caps go bad alot. Check coolant temp sensor on head three wire . Mine shorted to ground pulled 5v ref signal down shut engine off randomly. Took a while to find that issue. One of the best vehicles I Ever owned . Commercial use in NYC metro area. GMs longest made vehicle never changed 1996-2024.
Thank you so much for commenting. This is great information. I greatly appreciate your time and the detail you added to this post. I hope I am able to get that kind of mileage .
