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Q: My vehicle has just been inspected and had a tire rod replaced. on 2005 Buick Rendezvous

running great for a week, thn all the sudden one morning would not start. AAA came and checked battery, it was fine. towed vehicle to garage to have alternater and starter checked, and both fine. My mechanic says I need a whole new computer system. Does this sound right? completley fine night before then all the sudden wont start in am. Not battery, alternater, or starter. could it actually be the computer?
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Not likely. Take it to a professional shop for a proper diagnosis. You may have to pay for a proper diagnostic routine, but should be well worth it.
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