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Old 07-06-2004, 10:25 AM
HGW HGW is offline
Hummer Expert
 
Join Date: Jan 2004
Location: Runnin with NASCAR, sometimes Central NJ
Posts: 932
HGW is off the scale
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Klaus:

I ran my H2 about 150 miles in PA two weeks ago--lots of long, long inclines. On cruise control, I did not have one downshift. It was a pleasure to drive because the SC makes power when needed and no downshift occured for the entire run.

Even when I increased speed from say 70-75 MPH using the cruise control button, no downshift occured.

I am sure if I increased speed dramatically--impossible on the PA turnpike, it would eventually find the downshift point.

After the install, I changed my shift setpoints and shift pressure for normal acceleration and also when you do a WOT tromp. Reprograming the PCM is recommended beyond the SC reprograming provided with the kit.

NOTE:

I also have true dual exhaust, headers, high flow cats, air intake and a better MAF sensor---these may have helped with the "no downshift" on hills due to extra power but I am sure that a stock install will provide the same result you are looking for.
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