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#5646521 - 12/28/10 09:41 AM Re: 2007 Silverado Check Engine Light [Re: leethefishking]
cuevl Offline
Pro Angler

Registered: 09/07/07
Posts: 995
Loc: Lewisville, Texas
Any symptoms the truck is doing?
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#5646670 - 12/28/10 10:27 AM Re: 2007 Silverado Check Engine Light [Re: leethefishking]
97fordnut Online   sick
Extreme Angler

Registered: 06/24/09
Posts: 1429
Loc: Garland, TX
Originally Posted By: leethefishking
Light came back on today. Specific Code is (P0121). Dont know if its worth mentioning but both of the last two times the light has come on I was driving down very dusty dirt roads.


noidea I'm confused.

P0121
Throttle Position Sensor/Switch A Circuit Range/Performance Problem

http://www.troublecodes.net/OBD2/Pcodes.shtml
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#5647720 - 12/28/10 03:23 PM Re: 2007 Silverado Check Engine Light [Re: 97fordnut]
cuevl Offline
Pro Angler

Registered: 09/07/07
Posts: 995
Loc: Lewisville, Texas
I'm confused too but symptoms would clear things up a bit too.

Wondering if it is hesitating at all or reving high or irratic thru different throttle positions.

I would go ahead and clean throttle body and replace the TPS which shouldn't be much.
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#5661021 - 12/31/10 11:01 PM Re: 2007 Silverado Check Engine Light [Re: cuevl]
leethefishking Offline
Outdoorsman

Registered: 05/24/02
Posts: 249
Loc: San Marcos, TX
Well Im confused too since Auto Zone told me it was an Evap system code. Dont have any symptoms at all other than my gas mileage has seemed to be a little down over the last year. I just contributed that to E-10. The code reader I used was an el cheapo I will try Oreileys or somwhere else and see if I can have it read there as well.

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