Recently my car has been tuned with a DHP tuner. After the first time we uploaded the tune to the pcm the car did not display the message. Several tune uploads later this message has come up and will not go away. I've ran the car through 3 10 minute "cycles" for the security relearn but still nothing. Will disabling the theft system and then reenabling it fix this issue?

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2004 Grand Prix GTP
FWI | HP Tuner | 1.9 Rockers | Headers | 3.5 Pulley | 97-03 Control Arms w/GMPP sway bar|

I would want to say no.

I suggest re-writing the tune to your car with Manual entry for your VIN # and see if that will do the trick. I had to do that to my buddys 07 gtp w/ a 05 pcm for it to work.

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Dave's Hocus Pocus Tuning of South Dakota

I have the same problem, still haven't found a fix yet.. I didn't want to write the PCM again in case it bricks like some others I attempted...

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T66 Turbo,3" downpipes, oversized A2A,Stg3 heads/cam,hv3,built trans,bilstein struts,ssc springs,gxp brakes,pace car spoiler(1of3??),lots more.. dyno'd @ 421WHP~13lbs boost on OLD setup. New = ???