My name is Steve, I have been a tech for over 30 years (Business systems), and am the new owner of a not so new 2004 Grand Prix GT.
I have had a few issues and managed to fix most of them, however one rabbit I can not trap is the darn P0171. No other DTC's Vacuum tests no leaks, seafoam in last tank, the thing is it comes and goes. I can delete it, and run for a few days then it comes back. Recently replaced the gasket set under the intake P, new MAF, new gas filter, and she has only 155K KMs. Runs like a champ, but this dern check engine light is starting to look like a target... I Have read your forums and enjoy all the input. I hope to be able to input some of my experiences with you all over time.