Failure Conditions
WARNING: This page is about a different car, the 1991 Geo Storm, 1991 Geo Metro, 1990 Geo Storm, and 1990 Geo Metro. However, it is still accessible from the selected car via links, so may be relevant.
History Code 33 will set if voltage at 36VLR output of DERM (terminal No. A2) is equal to IGNITION 1 voltage (+/-2 volts) within first 500 milliseconds after ignition is turned on, 3 ignition cycles in a row.