Hello everyone, before anything, thank you for taking your time to look at my post and chiming in. Truck is a 2010 Tahoe 5.3L PPV with 188k miles.
As the tittle says, i am getting a vibration whenever my truck has the AFM active. I keep my cluster in the “Instant Econ V4/V8” mode. I’ve been monitoring this for the past week or so. Between the speeds of 30-55mph when the V4 mode is on, i feel a vibration on my gas pedal and steering wheel. But between the speeds of 60mph+ the vibration on the pedal is faint but the steering wheel is the same. However, the moment i tap the gas pedal even in the slightest, that the V8 mode kicks in, all vibration goes away. I have no check engines, no performance issues, no misfires, fluids and oils are perfect, nothing.
This is not something that seriously bothers me like at all, i am just curious what could be causing this and if anyone else has encountered this and found what the cause was. I do have a 2008 and 2016 Yukon XL both 5.3L too and the AFM don’t vibrate like mines does when ON. Looking up online the one thing that comes up the most is motor mounts, but in my experience with bad motor mounts, this doesn’t feel like it’s that, especially since is only when im driving and when im stopped at a light or at idle, there’s no vibration coming from the engine or anything, no kicks either, but i could be wrong. I also know my car is a PPV vehicle so i am not sure if this is also normal. Any opinions/suggestions are appreciated!
As the tittle says, i am getting a vibration whenever my truck has the AFM active. I keep my cluster in the “Instant Econ V4/V8” mode. I’ve been monitoring this for the past week or so. Between the speeds of 30-55mph when the V4 mode is on, i feel a vibration on my gas pedal and steering wheel. But between the speeds of 60mph+ the vibration on the pedal is faint but the steering wheel is the same. However, the moment i tap the gas pedal even in the slightest, that the V8 mode kicks in, all vibration goes away. I have no check engines, no performance issues, no misfires, fluids and oils are perfect, nothing.
This is not something that seriously bothers me like at all, i am just curious what could be causing this and if anyone else has encountered this and found what the cause was. I do have a 2008 and 2016 Yukon XL both 5.3L too and the AFM don’t vibrate like mines does when ON. Looking up online the one thing that comes up the most is motor mounts, but in my experience with bad motor mounts, this doesn’t feel like it’s that, especially since is only when im driving and when im stopped at a light or at idle, there’s no vibration coming from the engine or anything, no kicks either, but i could be wrong. I also know my car is a PPV vehicle so i am not sure if this is also normal. Any opinions/suggestions are appreciated!
