You're probably right.

 

Or look at their sig.

 

Profile is still needed for those members that have sigs not displayed.

 

All I know is when I drop mine into "I" when moving, I get a metallic click/clunk out of the front end.

Dealer hasn't been able to identify it yet. I think it might be suspension related, but not 100% sure.

 

I have not found Intermediate gear to be very useful- I have a long, steep hill near me, and I have downshifted every automatic trans I've owned to engine brake on this slope. All have stayed in the selected gear untill I upshifted manually. The HHR held second briefly, but then upshifted to third, thus defeating the purpose of downshifting for engine braking on a grade!!! Is this some kind of "overheat protection" or is it just the nature of this "I" gear?

As a historical point, In the 1965-92 Rolls Royces and Bentleys that used the GM Turbo 400 3 speed auto, the shift quadrant was "P R N D I L", with the last three representing Direct, Intermediate and Low. (A british way of saying Drive, Second and First)

 

I is 3rd gear, straight through
When you start out it will run through 1 2 and then 3, no overdrive.
There is one lower gear too, L for very steep grades.

Any mechanic will tell you not to beat on your car in Overdrive position.
Very hard on the transmission.(lock up converter specially)
I put a C-4 3 speed in my TurboStang because of the weak A4LD
Now I have no overdrive but I can shift that C-4 like it was a manual all day, up and down.


Put it in I exept for the Interstate as it does not stand for this.

Good for city driving or country roads where you want some engine braking when off throttle.

 

Maybe you just shouldn't be doing that when moving! I don't really know, it's just a thought.

 

It's the same click/clank I hear when I shift out of park after it's been sitting for awhile.

 

I do it all the time, to pass driving cell phone users applying their makeup. No clunk, it just shifts down. It is meant to be shifted while driving !! I plan on making extensive use of it on wintery slippery days (engine compression braking).

Yves

 

Hey Black Rose......

I'm going to suggest that you have something out of the norm in your trans.

I used "I" gear extensively, on my recent trip, to solve the "heavy" automatic trans kick down, when climbing steep hills (more noticeable using cruise control).
NEVER had your described problem. You might want to talk with your dealer (at least get it on record) about it.