What's the reset process for a new accelerator pedal on an '08 3.8L?

[showme]

My grandkids '08 went into limp mode (reduced power) and I've been throwing parts at it to try to fix it. I installed a brake pedal position sensor and had it calibrated, but it's still showing reduced power, so I installed a new accelerator pedal. But after I did, the car's idle was crappy. It sounded weak and was revving up and down (not bad, but noticable),  so I figured I had gotten a defective new pedal and removed it and put the old one back on and the idling problem disappeared. While checking out videos on some other GP subjects, I came across one for resetting accelerator pedals by turning the key to accessory, slowly pushing the pedal to the floor and holding it for 10-15 seconds and letting it up slowly. But the guy said at the end of the video that each vehicle has it's own sequence for resetting, so I need to know if anyone can tell me the correct procedure for doing this on our 2008 Grand Prix 3.8. I want to try putting it in again and see if it will work correctly by resetting it, which I didn't do last time. Thanks for any ideas or comments. Lee 

Edited 3 hours ago by showme

[55trucker]

My good man, honestly, you need this......

https://www.ebay.com/itm/236716370404?fits=Year%3A2008|Model%3AGrand+Prix&_trkparms=itmf%3D1%26aid%3D1110018%26rkt%3D12%26mech%3D1%26algv%3DCompVIDesktopATF2V6ReplaceKnnV4WithVectorDbNsOptHotPlRecallWithSiblingFilterCpcRecallsWithCiiQueryEmbedding%26pmt%3D1%26amclksrc%3DITM%26sd%3D167707521148%26sid%3DAQALAAAAEFEOJKTB8w2%2FUvCv%2B9BmnHc%3D%26itm%3D236716370404%26noa%3D0%26plcampt%3D0%3A161936924014%26algo%3DHOMESPLICE.COMPLISTINGS%26brand%3DChevrolet%26asc%3D20201210111451%26ao%3D1%26rk%3D2%26pid%3D101196%26b%3D1%26mehot%3Dnone%26lsid%3D100%26meid%3D031cf1d323cc45f48d590ca2cbbfb577%26pg%3D2332490&_trksid=p2332490.c101196.m2219&itmprp=cksum%3A236716370404031cf1d323cc45f48d590ca2cbbfb577|enc%3AAQALAAABYMJqCZOVY9EoLokt2QswX93oJfuGbORZEZhlCAjlXRRCUbpM9OMIdCmRfkOVQ1PhspDZGTlVp%2BsQFBtO93nb2QX5mVs4lL83nkIbUjqkMa8029EY4XfdhoaLjzTWK5DJUavttt5PoiOIedyWzJY%2FVuksmX506GdUxBoPT1LIWqjfWGejsfPdVITxAKzulOfMQQzvMopxvh020LIFxF%2F1RiyhTFtoeUf0kcPSfyaJp%2BqEsvlJmUmp6P%2B6ZXUDEhrqhuDWjXNRu9Vx3c77Hy1gWwqXTnGUWstmFy1WB81FxnZek%2BvwaLQ4bOU2dwUbV7kufOFF8gwiTc0VeOn%2B4MWaPd1p0%2BUGgIVKXXQHpuXpQgf0Cv%2Btjj2%2B3HQ49QVOK0A3yudeI2kPk%2BCNl8MQHkPLGnFgRvy9lzN5DGtFRlREpsF1GFQ%2Fv6N1%2FfSSN%2F4YIadnCydMbJTrQtw57KcYUXLBA4Q%3D|ampid%3APL_CLK|clp%3A2332490&itmmeta=01KQX3SJVJNPZ9BRW6D2YJV73Z

if one wants to be able to diagnose & service their vehicles themselves it is invaluable. It's money well spent.

Edited 1 hour ago by 55trucker