QuestionQUESTION: The security light and the service engine soon lights are on .the service engine soon comes on after about 10 miles it has been doing this for 8 years. shop said its stuck. security light (orange) always on????
ANSWER: Perform this test sequence:
1. Ignition ON, Engine OFF.
2. Simultaneously push and hold the OFF and WARMER buttons on your climate control panel for 3 seconds and release them.
3. CODES will appear in the form of LETTERS/NUMBERS and then the dispaly will STOP at PCM?
4. Tell me EXACTLY what displays on the fuel data display and as EACH CODE displays the word CURRENT or HISTORY will display with EACH CODE.
5. Tell me what CODES you get and if they are CURRENT or HISTORY as if you were video taping the display.
6. Turn OFF ignition.
---------- FOLLOW-UP ----------
QUESTION: performed 1- 5
code P039 History,No ACP code,No Sir code, NoTcs code, PCM?
Thats all !!!
AnswerPO39 means that you have a TORQUE CONVETER CLUTCH problem in the transmission.
FIRST check with your Cadillac dealers service department as there is a TECHNICAL SERVICE BULLETIN that came out in 1995 requiring replacing of the ECM computer ROM chip.
If your car is NOT applicable to this bulletin, E-mail me at: onlineautohelp@msn.com and I can provide PICTURES and DIRECTIVES to fix this problem.
