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Old 05-22-2011, 04:14 PM   #11
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It starts occasionally, goes to 1000 rpm and starts to drop off, any pedal input, it dies immediately.
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Old 05-22-2011, 04:35 PM   #12
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You know, that kind of sounds like a bad throttle position sensor. Here'* how to test it. https://www.gmforum.com/trouble-shooting-test-procedures-141/testing-tps-throttle-position-sensor-279319/
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Old 05-22-2011, 04:42 PM   #13
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Thanks Dan, i'll check it out.
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Old 05-22-2011, 04:47 PM   #14
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Another thing you can try is unplug your MAF. The engine will stumble and run rough, and you will get a SES light. But it should smooth out. If that happens and the engine runs right, the MAF is bad.
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Old 05-22-2011, 04:55 PM   #15
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Mass air flow?
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Old 05-22-2011, 04:57 PM   #16
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Yes. Just unplug it. Wont hurt the engine.
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Old 05-23-2011, 08:19 AM   #17
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if your emission light came on you should have some codes stored, do you have a reader?
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Old 05-23-2011, 04:39 PM   #18
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Have you changed the fuel filter? A bad fuel filter can still build pressure in the fuel line, but restricts flow.
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Old 05-25-2011, 01:17 PM   #19
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hatrock,

Please keep us posted when the issue has been taken care of.

Thank you,
Caron, GM Customer Service
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