2003 GMC Sonoma O2 sensor

Tiny
KEN GOULD
  • 2003 GMC SONOMA

Electrical problem
2003 GMC Sonoma 6 cyl Two Wheel Drive Automatic 114000 miles

My question is where the malfunctioning o2 sensor is located. I was told bank #2 sensor #1 is defective, How do I know which one is defective there are four o2 sensors on this vehicle.

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Saturday, June 19th, 2010 AT 1:29 PM

1 Reply

Tiny
SATURNTECH9
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http://www.2carpros.com/forum/automotive_pictures/416332_2003_gmc_sonoma_43L_o2_sensor_locations_1.jpg


There you go.

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Sunday, June 20th, 2010 AT 2:21 AM

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