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4l80e not shifting right

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Re: 4l80e not shifting right by BUBBA THE BUS TECH
Post New Message I am guessing two seperaate problems. If it won't crank hot it is generally a starter over heat. If it just won't start we need to look for failing or overheated electronic components. In both the starter and electronics for missing heat sheilding. Next we need to look for spark when it wont start, Injection etc. Cranking and not starting should show a code, if it won't you need to get a good scan tool and watch the sensor inputs etc while cranking. I have seen fuel pumps and fuel pump relays refuse to work after a hot soak. These would not show on the scan. Good Luck
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Post New Message4l80e not shifting right Steve 2-20-08  
  Reply to MessageRe: 4l80e not shifting right BUBBA THE BUS TECH 2-21-08  
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