LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Need ODBII Drive Cycle for 97Z28

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Old Apr 29, 2004 | 05:57 PM
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IamN2Speed's Avatar
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Joined: Jun 2000
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From: Roseville, CA
Need ODBII Drive Cycle for 97Z28

My attempts to pass smog seem to be futile...

I still have not managed to trip the 'Complete' flag for O2 Sensor or Catalyst. Does anyone have the actual drive cycles for these 2 tests.

I believe one is the drive to 45mph at part throttle and hold it for 5 minutes, then decelerate to 0, and hold the brake for 2 min?

Would like confirmation, and ideally, the actual step by step from the book.

Thanks,
Keith
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