I have a 1996 chevy tahoe it has a obd2 code p0172 I have replaced the o2 sensors upstream of the catalytic converter the engine seems to be running very rich, what should I try next? Close to Christmas cant afford to keep throwing money away.
It has the 5.7 engine wheel drive
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have the same problem?
Monday, December 5th, 2011 AT 4:14 PM