Ok, this has happened to me a couple of times in my 08 Tahoe Hybrid.

I will be slowing down and almost to a stop....I guess the Tahoe has trouble deciding to go to battery or gas mode and it literally "jolts" forward a couple of feet and I have to hit the brakes hard.

It almost even feels like someone has hit you...ok, not really, but you do feel it.

I know someone else over at tahoeforum has experienced this.

It happens maybe once a week for me.

 

I have felt that...I've also been hearing noises in the tranny that appear to be getting louder! No idiot lights have come on to tell me to have the Transmission looked at but I'm fully expecting it sooner or later. It seems when the vehicle is trying to decide whether to use electric or gas there is a clunking noise; almost like the sound a worn u-joint makes. Anyone else hear that? I posted this in an earlier thread but no one else had experienced it at that time. Of course, with the radio on or any type of background noise, you can't hear it...now that I know it's there I am obsessed with it and I find myself periodically turning off the radio to try and discern if it is getting louder.

 

Oh man...I only have 5000 miles on mine so fingers crossed.

I love how quiet it is and that I average about 20mpg but sometimes I wonder if this hybrid technology is ready yet....plus, I am still very worried about not having a spare tire.

I just got a flat yesterday but luckily I could still drive it to Discount Tire.

What happens if I get one in the middle of no where on a family road trip?

 

Fix-a-Flat?

I only have 3000 miles on mine so maybe I just got a "lemon"!

 

Yes, I feel it too. But to me, its more of a shaking than a jolt.

There is a service bulletin posted here:

https://www.greenhybrid.com/discuss/...87/index3.html

 

FYI,

My dealer called me earlier this week and said there is now a software update to fix the "jerk" as they call it. He was informed by GM about it.

I had the update done and have not felt it since.

I also seem to stay in battery mode a lot more when first accelerating. Pretty cool!