2010 GMC Canyon, rattling sound during 3rd, 4th, 5th gear - Chevy Colorado & GMC Canyon

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Old 04-23-2011, 02:43 PM   #1 (permalink)
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Default 2010 GMC Canyon, rattling sound during 3rd, 4th, 5th gear

sounds coming from the lower engine i assume, since i can only hear it when im driving 30+ mph. anybody got any clue what it can be. my truck is still under warranty but i don't want to go in and them to say "nothings wrong with this truck" because i look like a sap that will fall for it.

truck only has 3100 miles on it, and its a 4 cylinder manual transmission. i also noticed the rpms on start up dip down to 500 to 700 from 1.1k, is that normal? and one last thing, when i reverse and press in the clutch to throw it into first gear, my engine 80% of the time almost stalls. another weird thing i noticed.

can anyone help me out?
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Old 04-23-2011, 05:20 PM   #2 (permalink)
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Default Re: 2010 GMC Canyon, rattling sound during 3rd, 4th, 5th gear

any check engine lights? have youn cleaned your throttle body?


dealer is your bect option due to it being under warranty.
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