PCM:error unlock for refresh (-1)

[SeaRay45db]

Trying to remove the Diabolo Build and put the back up on. Had no problems putting it on, but cannot take if off. Nothing has changed. No auto start or anything like that.

Suggestions?

Thanks

2004 Chevy Suburban 5.3 1500

[mikel]

aftermarket stereo?

[SeaRay45db]

Yes, no lock on it.

[06MonteSS]

you need to make sure anything aftermarket is disconnected/pull the fuse for - anything like aftermarket stereo, subs, amps, nav, alarm, remote start, seat heaters, trailer brake/light setup, etc.. anything like that, their wiring harnesses need to be disconnected/pull the fuses for it before you try to tune anything...

also make sure everything is turned off inside the truck.. lights, radio, heat/fan/blower, do not operate power windows, put your parking brake on, etc...