I have been getting both PO171 and 174 codes on my 02 Avalanche 5.3 for a while now. Just been resetting the light but thought I better find and fix the problem. Am I looking at a bad o2 sensor here?
I have been getting both PO171 and 174 codes on my 02 Avalanche 5.3 for a while now. Just been resetting the light but thought I better find and fix the problem. Am I looking at a bad o2 sensor here?