I get a slight vibration when slowing down to about 10 or 15 MPH, I think it is the auto having a hard time going from 2nd to 1st. I can feel it through the brake pedal and the steering wheel.

Well there are really 2 issues here:

1. Gas Pedal transmits an excessive amount of road feel. I don't know if you have looked at your gas pedal, but it is made entirely of plastic. It is a plastic pedal attached to an electronic box under the dash. The box turns the pedal into an electronic signal. Looks like GM cheaped out again.

2. My H3 will sometimes make a clunking noise in the front end (discussed more in other threads). You can hear it thru the steering column. When it is making this noise you can also feel it thru the gas pedal.

My local dealer (MedVed in Denver) has looked into both issues and has said they cannot reproduce anything. So they are basically telling me unless they can hear/feel the issues themselves they can't and won't fix anything.

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by richk:

My local dealer (MedVed in Denver) has looked into both issues and has said they cannot reproduce anything. So they are basically telling me unless they can hear/feel the issues themselves they can't and won't fix anything. </div></BLOCKQUOTE>

great, that is my fear. the dealer not doing anything until GM eventually finds their mistake since this is the 1st production of H3s.

I have 1500 miles and I'm experiencing the exact same issues. Going to try and get over to Lynch Hummer next week. I'll let you know what they say.

My pedal is doing that knocking sound also.
It started doing this when I brought my hummer to the dealer to check the rattling noise in the front passenger side near the air intakes. They told me that when they were checking the rattling noise near the air intake area, they pressed the gas pedal and brake at the same time to reach 3000 rpm to replicate the rattling noise. Somehow I think pressing the gas and brake at the same time caused the pedal vibrating/knocking problem. Could this knocking sound in the pedal be caused by the brakes/rotors???? Anyone?


<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by RMST:
I have 1500 miles and I'm experiencing the exact same issues. Going to try and get over to Lynch Hummer next week. I'll let you know what they say. </div></BLOCKQUOTE>

I have the same problem. Thud or some type of noise. Very hard to describe. Very hard to pin point the location. Sometimes it seems to come from the steering column or from the gas pedal. It's very muffled and it doesn't happen all the time. Seems more prevalent at low speeds and maybe when turning. Even had a thought of something down in the front end but it really seems to be in the area of the steering column. I have only 300 miles on it. I don't think it's anything serious, probably some design flaw. I am going to monitor it closely. Funny that my wife doesn't even notice it. She must play the radio too loud......

We have to say though, out of all the new and used vehicles we have had in our life, this is the most awesome vehicle we have ever had!!!!


Red, Adventure Pkg, Monsoon Radio, Trailer Hitch, only 300 miles on it.

I have been driving a loaner H3 for 2 weeks while the dealer is trying to fix the knocking noise issue. Last week they said they cannot reproduce the noise. I assume that they still can't and are afraid to tell me.