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Re: Change those O2 sensors!
Posted to Technical Discussion Forum on 7/2/2019 14 Replies

I'm not cheap with my own truck. Drove it new off the lot. 1999 C3500 crew cab 2wd 454. 269,000 on the clock, and it still has all 4 O.E. 02 sensors. Fuel trims still good, and mileage unchanged since new. Injectors were changed for leaking around 200,000.

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