2004 Buick Rainier Support Question
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Question posted by mtrandyd237 on January 17th, 2014
Check Engine Light Keeps Coming On, In Sloppy Wet Weather.
Have a 2004 Buick rainier cxl awd that is having 4 or 5 transmission codes come on when driving in sloppy wet weather. cant take key out of the ignition when light comes on. Have to clear codes to get key out. any ideas? Wiring harness? Ignition switch/module? computer
Current Answers
Answer #1: Posted by TexasDeviL on January 17th, 2014 12:26 PM
Without knowing what codes it is kicking theres really no way I can answer that. What I can tell you is that you need to take it in to a dealership for a proper diagnostic scan on an OBD-II scantool. The check engine light could be caused by a faulty speed sensor which would tie directly into the transmision. It could also be a misfire code or an EVAP code thats causing the transmision to react and throw false codes. Theres really just too many posibilities to narrow it down here. You did say you cant remove the key until the codes are cleared which tells me the transmision interlock is not fully engaging into park or the sensor for it is reading that its not. But this could be a symptom of the problem instead of the problem.
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[automotive mechanic and phone modding enthusiast]
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