vibration in gas pedal

[mcioci]

I have a 2005 H2, purchased it in 2008 with only 24k miles on it. Gas prices back then were over $4 a gallon so I got it cheap and from an auction for $26,500. Anyway, I take great care of my truck, I now have 58k miles on it. Anyway enuf for the history, a few months ago, I started feeling a vibration in gas pedal, usually between 20-50 mph, not a violent vibration but a vibration that I know was not there before. I could also feel it on floor on drivers side if I have truck on cruise. I already changed the maf sensor but that did not fix this issue. I had the dealer test the Cats and they are well within specs. I am changing my front and rear diff fluids on Thursday, its due anyway. Anyone have any idea what this could be?

BTW, I just ordered a front grill and the GOBI roof cage along with the PIAA 520 Series fog lights. All this will be installed week of July 9h when I get everything. I will post pics once im done.

[devilsfan]

Check your pitman arms, it could be loose. Mine had this exact vibration for a good 6 months before the pitman arm broke. It was most noticeable to me when I was around 30-40 mph, kind of cruising along. Could feel it in the pedal itself and the floorboard a bit. Arm was replaced, vibration is gone.

[mcioci]

Originally Posted by devilsfan

Check your pitman arms, it could be loose. Mine had this exact vibration for a good 6 months before the pitman arm broke. It was most noticeable to me when I was around 30-40 mph, kind of cruising along. Could feel it in the pedal itself and the floorboard a bit. Arm was replaced, vibration is gone.

Thanks. I will check on that when I am changing my diff fluid on thursday. Thanks for the input. I will let you know how it goes.

[mcioci]

I checked the pitman arm and it wasnt loose. I changed both front and rear diff fluid and i still have that slight vibration bet 30 - 50mph. It happens anywhere bet those speeds. It not a big vibration but i feel it because its my truck. Dont know what else to try.

[mcioci]

I took truck for a nice 100 mile ride yesterday and concentrated on the vibration in gas pedal. While accelerating you can feel a lot of vibration bet 20-55mph. I put it on cruise and touch gas pedal with foot and I still felt it but not as bad as when accelerating. Could it be exhaust? Cats? Tranny? I dont know what else to try.

[mcioci]

So this weekend I'm driving my truck on highway and not only do I feel the vibration in pedal at 40mph but now bet 55-65mph, I hear a droning sound. Brought it to dealer to take a drive with mechanic, he thinks its a hub bearring. Lets hope this is the cause of this vibration and drone sound. Need it fixed today because I am driving down to South Carolina early Tues morning. I will post the outcome later.