...4 oxegyn sensors locacted on my 2002 Yokon Denali and are they easy to replace? have codes 171 and 131 found out it is probably the sensors. first thing thats happened on it though since i bought it ...
replaced 02 sensor with code 131 and 171 now getting p0053 2005 gmc sierra 1500 5.3 V8. was getting rough idle. codes p0131 p0171 and p0300. changed plugs and wires and bank 1 o2 sensor 1. everything ...
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