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Prev Professional Automotive Repair Technical Discussions for August 10, 2014
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Open Help Requests for GM
Help Request Answers
1985 Oldsmobile Cutlass Ciera LS 2.5L Drivability VIN: 1G3AJ19RXF
Hi, I hope someone can offer help with this problem child car. 1985 Olds Cutlass Ciera 2.5L, came in with 13 O2 Sensor, 42 Electronic Spark Timing, and 35 Idle Air Control codes. The is very high, 2200 to 2400 RPM. Cleared codes and the only one to come back i...

Fixes & Summaries for GM
Fix/Summary Answers
2005 Cadillac CTS V 5.7L Hesitation, Surge VIN: 1G6DN56S45
I have tried getting this car back to shop but have been to busy. Tested with stability control off by pressing and holding trac buttion for 5secs. issue still happens. Tps was replaced but not sure if was an oem or how long ago. Will update when fix is ma...
2007 Cadillac CTS 3.6L Ignition lock/ shift interlock VIN: 1G6DP57797
I'm pleased to report that a PCM did fix this car. It seems of all the replies to this post, everyone said "PCM". I did use my lab-scope to look at what should be a clean 0-7v square-wave pattern on the data lines and found it somewhat square and rough. Not...
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