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What would make a 99 Tahoe die while driving it or sitting still?
Wiki User
∙ 12y ago
The fuel pump (or fuel pump relay, if it has one) may be going out. Brian If it is shutting down immediately (without any sputtering or missing) but just completely dying outright and sudden, it is probably a bad battery cable or very nasty connections at terminals. Mine had been dying like that (even at highway speeds) and the problem was the positive battery cable was almost severed. A new cable fixed my problem. to check if it is the fuel pump relay open hood take cover off fuse panel ( black ,right hand side near brake fluid container) pull out relay if it is really hot then that may be the problem it should only cost you about 20 bucks to replace it and it is a dealer part so...
AnswerThere is a possibility that this could also be your alternator going bad. With my Tahoe, I haven't had this happen because I would watch my meter on the dash, and take it to get tested if it seemed low... (ok and once or twice it wouldn't start...) but I had an '87 Silverado that stalled out on me at a light once, and the alternator had gone bad. If you take it to an Auto Zone or Advance Auto Parts, or probably most any auto parts store, they can come out and test your charging system for FREE, and advise you if you need a new alternator, and or battery. This test only takes a couple of minutes, and is well worth it. Also keep in mind some of the auto parts stores garantee them "for life"I got one of these alternators years ago, and haven't paid for one since- a real money saver since I do the work myself in about 15 min.
Wiki User
∙ 12y ago
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