bought with 45000, since replaced brakes twice, engine, alternator, starter X 2, wiring problems numerous, check engine soon light has been on at least a half dozen times and required many different repairs. The Blazer just turned 100000 and I am having serious transmission problems. I have always loved Chevys, but I doubt I'll ever buy another after this one. The 4.3 is a slug. wife has a Saturn Vue with the 3.5 Honda engine and it will smoke the 4.3 and gets good MPG. Stay away from the Blazer.
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