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Re: 1997 runs like crap
Your problem is not a defective o2 sensor. If there was a malfunction with the o2 sensor heater, there would be a code associated with it. The readiness monitors not being ready does not indicate that something is defective. It simply means that the conditions are not there for the self test to run on those components.
Are you trying to pass emissions or just trying to get the truck running better? Those two monitors showing not ready do not have any affect on how the engine runs.
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99 Rodeo LS 3.5L Stroker V-6, 4wd, 31x10.5x15 2 inch Trooper lift, Aisin manual hubs.
03 GMC Envoy XL SLT 4x4 5.3L V8
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