On my 98 Bonneville when cold it always run strong and shifted fine. But once warmed up it would have an intermittent bog when you slow down and make a turn or just sitting at the light and hit the gas and it didn't what was up and sit there or start out slow unless you punched it and even then it would be lazy. This thing was on numerous analyzers and every sensor
was changed except for the cam & crank sensors. Yes we did test the sensors prior to changing that could be tested.Lots of GM and other very good mechanics tried and no one succeeded. So I bought a used low mileage computer and had GM download the correct version software with the updates. This car has never run this good ever. Wow what nice driving and reliable car. Power and better mileage. Figured this should be shared.
Thanks to all that gave me help on this one.