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2009 CTS4 2007 STS
298 Posts
Discussion Starter #1
I just ran the codes on my 97STS and came up with the following:

PCM P0101- massive airflowsensor performance
PCM P0603- control module long term memory reset
PCM P1527- transmission range to pressure switch correlation

All of these were listed under HISTORY, are these codes that were fixed on the car or do I need to take it to the dealer. My service engine soon light comes on when i do a WOT but goes out later usually in 2-3 hours, but that hasn't happened since last week. I put the car on the road 2 days ago and drove about 400 miles with no problems. This is my first Caddie and I'm new to the site any input on these codes will be gladly appreciated. Thanks in advance
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