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#1
01-17-2005, 06:29 PM
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P0154/P0155 Code
Have a 4 WD 2000 Sierria with the 5.3L engine. Service engine light is on. Reading codes P0154 & P0155 which I know means that the problem is with Bank 2 Sensor 1. However which O2 sensor (i.e before, after cat,etc.) is this.
Really appreciate your help. Thanks 
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