PCM & HPP3 Question Within..........
03-08-2004, 10:13 AM
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PCM & HPP3 Question Within.......... I have a 99'SS with HPP3 for spedo calibration with gears and 160 T-Stat. The SES light is on and I would like to reset the PCM. Will I need to put the programmng on the HPP3 back to stock before resetting the PCM? I am not using the HPP3 for any kind of "tuning". Thanks in advance for your time. I appreciate any help you can offer.
03-08-2004, 05:41 PM
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Thanks, I just wanted to be sure. Anyway, I tried resetting the PCM, but SES is still on. If I have a someone with an OBDII scanner clear the code, will I have to take off HPP3 programming first? 
I can't afford to have the PCM lock up for any reason.
I can't afford to have the PCM lock up for any reason.