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Avalanche Chevy's first real SUT, combining the interior room of an SUV and the cargo ability of a pickup truck.

Chevrolet Avalanche
Platform: GMT 805 & 900.

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  #1  
Old 02-13-2012, 12:37 PM
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Join Date: Sep 2008
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Default Trouble Code PO121

Check engine light comes on and stays on for a day or two, then goes off. Showing trouble code PO121 (throttle position sensor). When the light is on, remote start won't work. Help, mudslide
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Old 02-13-2012, 09:41 PM
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Join Date: Mar 2010
Location: Michigan
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GMLouisFischer
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mudslide,

Could you please provide additional information? Vehicle model and year? How long has this been occurring? Is this a recent issue or a recurring?

Any additional information you can provide may help.

Louis
GM Customer Service
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  #3  
Old 02-18-2012, 12:23 PM
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'07 Cheveolet Avalanche LT 4WD. The check engine light has been coming on and going off every day or two for more than a month.
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Old 02-21-2012, 03:18 PM
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Join Date: Mar 2010
Location: Michigan
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GMLouisFischer
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mudslide,

I have searched my resources, however, have been unable to find any known throttle position sensor or remote start issues with 2007 Avalanche vehicles. I encourage you to take the vehicle in for an inspection. A certified technician should be able to offer a diagnosis.

If you have any additional questions, please feel free to contact me.

Louis
GM Customer Service
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Old 02-21-2012, 03:18 PM
 
 
 
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121, avalanche, check, chevrolet, chevy, code, engine, gm, gmc, light, olds, po, po121, tps, trouble


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