2008 H2 Second gear bog down with intake noise

[blackhawk29]

Do you 08' H2 guys notice the second gear bog down with a lot of intake noise? In other words on the 1-2 shift it bogs, kinda like a big underpowered boat trying to get on plane, with a lot of intake noise. this is my second 08' and both of them had it, the second one being a little better than the first. It's not as apparent when starting from a dead stop and running through the gears with moderate throttle. It happens mostly when trying to accelerate from 2, say when you pull up to a light and then it changes, or when going around a turn and the trans does not downshift to 1 Maybe this is due to a gear ratio change? If i shift it electronically and wind up the RPM's it seems a lot better.

[tomp]

Doesn't sound like an issue to me, but rather the GM Torque Management activating and reducing the timing as an overall result.

Look for Diablo to release a Predator programmer for the 08 and then you can disable TM like they offer on the previous year models.

[dkhummerh2]

You have had 2 (08's) Lucky bastard.
dk

[IRA51]

bring in in an complain ,often .sooner or later they will have a reflash that will help .if everyone has the same problem and raises hell they will address it .

[mikejr]

Do you 08' H2 guys notice the second gear bog down with a lot of intake noise? In other words on the 1-2 shift it bogs, kinda like a big underpowered boat trying to get on plane, with a lot of intake noise. this is my second 08' and both of them had it, the second one being a little better than the first. It's not as apparent when starting from a dead stop and running through the gears with moderate throttle. It happens mostly when trying to accelerate from 2, say when you pull up to a light and then it changes, or when going around a turn and the trans does not downshift to 1 Maybe this is due to a gear ratio change? If i shift it electronically and wind up the RPM's it seems a lot better.

I've not noticed that condition in my 08. Let me pay more attention to it and i'll let you know. One good solution is to just stomp it down and let it roar!