Problem 0xygen Sensors
11-22-2006, 07:23 PM
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Problem 0xygen Sensors I have a rcsb Silverado with a 5.3L. Anyway it is throwing codes for the banks 1 and 2 front and rear. The truck is running terrible. It also began to throw an egr code. What I am wondering is, why did all of it go within the same week and is that was is really wrong. I don't have the print off of the codes anymore but I know that that is what it said. Any help would be appreciated. Thanks-Preston
11-23-2006, 06:33 AM
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I have a 2004 GMC RCSB 5.3L . Just went through the same thing turned out to be a bad cat and o2 sensor. At first it ran rich and the mpg fell off, then it would barely idle at all. 
11-23-2006, 10:10 AM
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Thank for the replys what would happen if i just ran without cats. I have a true dual set up and two high flow cats. I was wondering is it ok to remove the egr setup? I am also needing to find a tuner in Arkansas that could tune out the rear o2's and the egr for me any suggestions? I have tried using search but it keeps timing out on me. Thanks- Preston