QuestionI have a like new 93 Coupe Deville. Anti Lock warning light came on a few days ago. It went out once for 30 seconds when I started the car cold this morning, but came right back on. No check engine light. The only diagnostic code that shows is F46 (low Freon it seems from another posting). Can you help?
AnswerLets CLEAR (erase) ALL the codes and see which codes return as E or EE codes or F or FF codes.
1. turn ignition switch ON. Do NOT start engine.
2. Simultaneously push and hold the OFF and WARMER buttons on the climate control panel for 3 seconds and release them. Codes will appear as E and or EE numbers followed by F or FF numbers and the display will stop on .7.0
3. Simultaneously push and hold the OFF and HI buttons until you see E.0.0 and release the buttons.
4. Simultaneously push and hold the OFF and LO buttons until you see F.0.0 and release the buttons.
5. turn OFF ignition.
6. wait a few minutes and start or drive the vehicle and see if the check engine light illuminates.
7. If it DOES, Repeat steps 1 and 2 and let me know what codes you get.
8. once you see the .7.0 turn off the ignition.
9. Let me know what codes you get.
