the vehicle in question is a 2008 grand prix with a 3.8l v6 non supercharged vin 2
the main hp tuners site says 97-07 supported however some hp tuners resellers are claiming 97-08 support
the pcm hardware shows it fits 2006-2008
anybody have more info?
Because 2008 was the first year they went to a CAN-BUS system, I'm pretty sure they were not going to support it, and the fact that GM cut the grand prix and pontiac all together the very next year.
Sadly because it's a year only PCM and year only everything else, you can not swap to an older PCM and make it work.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
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