Discussion in 'Chevy Suburban Forum (GMC Yukon XL)' started by bowtie60, Oct 22, 2010.
scan tool states catalityc converter below specs
I'll guess and said you may need a new Catalytic Converter and/or 02 Sensor??.....What year Truck do you Have??
Edit:.....What code or codes are coming up??
98 Sub, P0430 ,both cats have been changed at 138000 but not any of the four 02 sensors.
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