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2000 GMC Sierra OBD codep1133

Tiny
GPIRPIRIS
  • MEMBER
  • 2000 GMC SIERRA
Engine Performance problem
2000 GMC Sierra V8 Four Wheel Drive Automatic

this code shows on the reader : heated oxygen sensor insufficient switcing bank 1sensor 1( rear bank), does the OS neads replacement or the the bank 1 sensor 1, and where is this bank one sensor one, (rear bank), thank you.
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Thursday, April 8th, 2010 AT 5:22 PM

1 Reply

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Hello and thanks for donating

Your vehicle's bank 1, sensor 1 oxygen sensor will be in the left exhaust pipe before the cat. Converter. If this code appears it does usually indicate a faulty oxygen sensor, however it wouldn't hurt to have the other oxygen sensors tested as well.
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Thursday, April 8th, 2010 AT 10:39 PM

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