Silverado, Sierra & Fullsize Pick-ups The Silverado & Sierra have been two of the best selling trucks in the US for decades, and is truly proven to be "like a rock".

2014 Chevy Silverado

2014 Chevy Silverado

Platform: Truck, GMT 400, 800, & 900

o2 sensor codes

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Old

May 13, 2015 | 9:46 PM

#1

TheSilentBeast

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From: California

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o2 sensor codes

I have a 98 Silverado, 5.7 350. The motor has been rebuilt and I have put about 1,000 miles on it no problem. Then out of nowhere all four of my o2 sensors have an error code. The two down stream o2 sensors are fairly new. And I really don't know what can be causing it. Any ideas?

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Old

May 13, 2015 | 11:00 PM

#2

tech2

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hard to say without the actual codes. Any new aftermarket stuff installed?

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Old

May 14, 2015 | 12:12 AM

#3

TheSilentBeast

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From: California

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Quote:

Originally Posted by tech2

hard to say without the actual codes. Any new aftermarket stuff installed?

Just a exhaust system. Everything on the motor is stock.

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