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I am assuming that you want to get the codes stored in the ECM or BCM that indicate problems.
To display stored codes:
1. Turn ignition on.
2. press the "Off" and "Warmer" buttons on the A/C control panel at the same time until all of the warning lights on the dash light up, then release the buttons.
3. Codes will display on the fuel gage to the left of the steering column.
4. .E before the code means that it is displaying a history code for the ECM
5. .E.E before the code means that it is displaying a current ECM code.
6. .F before the code means that it is displaying a history code for the
BCM
7. .F.F before the code means that it is displaying a current BCM code.
8. When it reads .7.0. All of the codes have been displayed and the system is ready to perform other diagnostic tests.
9. To Exit Diagnostics, press "Auto" on the A/C panel
CadillacMan
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∙ 13y ago
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