Anyone have an 09..

[Ice]

I have an 08, purchased in Sept 08, and no it does not make that noise.

[TGCOFTN]

I have a 07 and a 08........I know EXACTLY what your talking about when you turn everything off and hit the brake pedal, mine does the same exact thing. My 08 is Solar Flare as well, my 07 is Yellow.

I have a question for you......when you turn your blinkers, or 4 way flashers on, does your back marker light flash? (the little light thats above you gas cap on the sides of the rear below the back window)

My 07 those lights flash, when I turn my blinkers on, and 4-ways on.

Also, I am curious, since you had a 05........have you gotten use to this new 6 speed tranny shifting so much? I thought it was something wrong with mine, I took it to the dealer a few times and told them this thing is scared of a hill, before it gets to the hill its already downshifting. So what I did is, I borrowed another 08 H2 from the dealer and drove it all day long, going up and down hills, and its does just like mine, so I guess its normal. Just seems like the old 6.0 liter is stronger below 2,500rpms than the new 6.2 liter. Once you get the 6.2 liter past 2,500rpms, its like a sports car, just wish it had more low end torque.


2007 Hummer H2 Yellow
2008 Hummer H2 Solar Flare

[HUMMERICH23]

Yeah mine does the same thing. I have noticed that noise from day one when applying the brake and figured it was normal but makes me wonder if something is wrong. At night time once in a while you can notice the headlights or interior lights dim slightly when it makes that noise so i have no idea what it is. Man since its been like 0 degrees up here in NE Ohio, my dam dash rattles and creeks like no other, had to put friction tape inbetween the brush aluminum panals on the inside part of driver's side door and the brush aluminum air conditioning vent to stop some of it. But still love the 6.2!

[HUMMERICH23]

Yeah my transmission does the same too. It gets kind of annoying when you have to push the accelerator down pretty hard to get over a hill. However my tune helped out tremendously and have all the power i need to blast over a steep incline. I do know there are more recent TCM programmings that update shift points and make the 6 speed sooo much better. I am a frequent over at the denalitrucks.com board and they pretty much have the same 6-speed and issues and there was a service bulletin that updated the programming in the TCM and users have raved about how much better the 6-speed acts. I have not brought this up to the dealer yet because with my tune it hasn?t been such an issue but i think all you have to do is mention sluggish acceleration and delayed downshifting or holding the passing gear and not shifting in the overdrive gear.

[solarflare]

Ok, I thought it was just me.....My side marker lights in the rear do not blink on the 08' model. My 05' side blinkers did though.
The brake noise I have gets a little louder when you drive on it longer....sounds more like a squeal.....it's really annoying to me anyways.
Yes, I have to step on the gas to get up over a hill, but it doesn't downshift really hard.....I know that this new transmission has two overdrives....says so right in the sales brochure.....so that is probably why it bogs down a little when you first start going up a hill.
I don't think I want to update my TCM programming....I did that once in a dodge ram, and my gas mileage went from great to under 10mpg!
For those of you that have had the update....does it affect the mpg a lot???
My headlights dim a little to when the brake noise is heard.....from what I understand it is the motor for the brake accumulator. It turns on to bring the pressure back up for the brake lines. From what I heard, it is only supposed to run about every 10-15 brakes....but mine turns on every other time.....
HummerRich23.....what are the last six of your vin? I'm wondering if a bad lot of motors for the brakes went through......might find common vin numbers.