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I'm thinking the problem may be your fuel pump. I've seen pumps behave the way you describe with it working on-again/off-again until it finally fails permanently. Plus, your descriptions of sustained higher RPM running with it going up and down could likely be pressure fluctuations coming from the pump. Luckily this is an easy thing to check if you have a ...


If this is a rebuilt alternator from a nationwide parts store, it is not uncommon for these to fail. Take it back to where you bought it and get a replacement. I hate to say it, but it's one of those things. You can purchase a new one from GM and it has the possibility it will fail in two days. Some things just cannot be tested well enough coming from the ...

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