<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by MAC:
According to my observation..."<HR></BLOCKQUOTE>
Mac,
Please try and pay attention.
Maybe because you live on a mountain you never have this happen because you are constantly climbing steeply or descending???
The cruise control SHOULD kick in when going up STEEP mountains... If it didn't you wouldn't be cruising?
BUT, the issue at hand is NOT on steep grades, but rather on minimal, almost non-existant grades. For EXAMPLE: in my Denali I would be traveling down the interstate at 75mph and come to an overpass. The Denali would just go right over it, with no change in rpms or no action with the cruise control. Speed constant. No shifts.
Now, when traveling on the same interstate highway in my H2, going the exact same speed of 75mph, the H2 gets about halfway to the top of the overpass (the same overpass as in the previous example) but suddenly, abrubtly and with a huge lurch --- the cruise control causes the transmission to downshift, the revs jump from 2250 rpms to about 3100 rpms. The speed increases from 75 to about 78 or 79. Then since the grade is almost non-existant, the H2 quickly reaches the top and the transmission shifts back and the rpms fall back to 2250 and the speed returns to the preset 75 mph.
This happens on almost EVERY overpass. It is extremely noticeable and seemingly unneccesary? The Denali never did this, unless the grade was
much steeper. Even then, the speed would pretty much (within 1 mph) stay the same.
I've noticed that you can get this sudden downshift to happen sometimes by hitting the accerate button on the cruise control a couple of times in a row (speeding up 2 mph).
Is this something to do with shift points or torque management?
Ed
Albie: I didn't know silicone counted...
