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2005 Chevy Silverado Check Engine light

Tiny
JPING
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 54,000 MILES
My check engine light came on after I filled up with fuel at a different station. WIll it go out when the fuel gets low and I re fill the tank?
Thursday, December 3rd, 2009 AT 4:24 AM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,200 POSTS
First, make sure the fuel cap is on tight. If it is, take the car to a nationally recognized parts store and have them scan the computer for codes. If the code is an EVAP system code, they will try to sell you a new gas cap. Don't get it until you tell me the code. About 99% of the time there is nothing wrong with the cap.

Let me know what you find.
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Wednesday, April 14th, 2021 AT 6:44 PM
Tiny
JPING
  • MEMBER
  • 4 POSTS
I did what you said reset the light and it ewnt out for a few days and came back on with these error codes

P0131 Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 1)

P0171 System too Lean (Bank 1)

P1133 Heated Oxygen Sensor (HO2S) insufficient switching bank 1 sensor 1(Rear Bank)

P1131 HO2S 11 Indicates Lean
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Wednesday, April 14th, 2021 AT 6:44 PM

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