PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Help, predator wont work

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Old May 31, 2003 | 12:43 PM
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AZHummer's Avatar
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From: AZ
Default Help, predator wont work

I tried to insatll the tune into the H2. It downloaded the stock tune fine, then when ti tried to intall the new tune is said unkown error. ?????
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Old May 31, 2003 | 01:30 PM
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AZHummer's Avatar
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From: AZ
Default Re: Help, predator wont work

Well they ( Diablo ) were correct in the manual. The ON STAR was the culprit. Unplugged all the associated fuses and it worked. OnStar interrigates the auto when it is on to keep it in the system. It does this often and the ECU gets interrupted for a few cpu cycles doing housework causing the tuning you are trying to do to fail. Oh Well I guess I am guilty of not reading the instructions. Will let everyone know how it works and what tranny settings work the best on the Hummer.
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