GM OBD-II drive cycle help
Posted: Wed Apr 03, 2019 2:51 pm
I replaced a clogged AIR valve on the old gasmobile, cleared the code, and now I need to complete the OBD-II drive cycle for smog testing...
Unfortunately, the drive cycle procedure is difficult to follow and seems like an accident waiting to happen:
http://www.obdii.com/DRIVECYCLE.HTML
Evap and EGR readiness still haven't come on after several attempts and near-accidents (I only need one of them to be ready for a '99).
No new error codes since the AIR valve replacement...
12V battery seems good (no unintended trip resets), so it's not losing information between drives.
Is there a safer, more reliable way of getting either the Evap or EGR ready?
Unfortunately, the drive cycle procedure is difficult to follow and seems like an accident waiting to happen:
http://www.obdii.com/DRIVECYCLE.HTML
Evap and EGR readiness still haven't come on after several attempts and near-accidents (I only need one of them to be ready for a '99).
No new error codes since the AIR valve replacement...
12V battery seems good (no unintended trip resets), so it's not losing information between drives.
Is there a safer, more reliable way of getting either the Evap or EGR ready?