Outlook rolls back when in drive or reverse in inclined driveway - Saturn Outlook Online Community
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post #1 of 21 (permalink) Old 06-12-2007, 12:20 PM Thread Starter
 
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Outlook rolls back when in drive or reverse in inclined driveway

I bought an outlook yesterday and I noticed when we drove it home that the outlook rolled back when on our driveway that has a moderate incline. It still stops in park but not in drive or reverse. Has anyone else had this problem I'm taking it to the dealer tomorrow to see what they think.
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post #2 of 21 (permalink) Old 06-12-2007, 06:22 PM
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Re: Outlook rolls back when in drive or reverse in inclined driveway

The other day I picked up my daughter at a friend's house. They have a very steep driveway. When I went to back up the driveway I noticed that I had give the accelerator quite a bit of gas to keep it from rolling forward. I figure this is a rather heavy vehicle and will need a fair amount of power to get it started on a steep incline.

VinceL
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post #3 of 21 (permalink) Old 06-14-2007, 03:56 PM
 
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Re: Outlook rolls back when in drive or reverse in inclined driveway

You're supposed to set the parking brake when you park to avoid this from happening. If you don't, then you will make it hard to shift out of park when you want to go again. This happens in my Azera as well...anytime I park on an incline...I set the parking brake first, then shift into Park. From my understanding...it's much easier on your transmsission as well.
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post #4 of 21 (permalink) Old 06-16-2007, 05:42 PM Thread Starter
 
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Re: Outlook rolls back when in drive or reverse in inclined driveway

I posted the problem originally and talked to my local Saturn dealer and tested another outlook to see if this was normal which I was assured it was. It turns out that the outlooks, enclaves, and acadias have a flat-towable transmission which is better for fuel economy and for other various reasons I would imagine as well. It seems unsafe but I don't live where there are alot of hills so I didn't return the vehicle or anything.
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post #5 of 21 (permalink) Old 11-16-2007, 12:26 AM
 
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Re: Outlook rolls back when in drive or reverse in inclined driveway

We bought an Enclave in September and have experienced the same roll back, both forward and reverse, on a slight grade. We got no help from the dealer nor the GM representatives, who are dismissing the issue as completely normal. we feel that the rolling back is a serious safety issue, and would like to mobilize an effort to have the manufacturer correct the design flaw with a hill side assist technology, similar to what the competitor same class cars have as standard safety features (see Lexus, Mazda)

We are interested in parties who have experienced the same problem...
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post #6 of 21 (permalink) Old 11-16-2007, 02:06 PM
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Re: Outlook rolls back when in drive or reverse in inclined driveway

My 2008 XE does this. The effect is like going from Neutral to Drive or Reverse in a manual transmission. Very scary in my opinion.
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post #7 of 21 (permalink) Old 11-16-2007, 03:23 PM
 
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Re: Outlook rolls back when in drive or reverse in inclined driveway

I don't really understand why someone would consider this to be a design flaw or safety issue, if the vehicle is in park it doesn't move correct? You would expect the car to move on a flat surface when not in park and not having you foot on the brake so how is a hill any different? Sounds more like a user error if you have your vehicle on a hill and it start rolling backwards because you either don't have a brake on or aren't pressing on an accelerator. This would be an issue for everyone with a manual transmission, so should all manual transmissions be banned because they are not safe?
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post #8 of 21 (permalink) Old 11-16-2007, 04:37 PM
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Re: Outlook rolls back when in drive or reverse in inclined driveway

Except most cars don't operate this way. The idle speed on an automatic is enough to pull the car in reverse, weather the accelerator is pressed or not. It should not, roll forward.
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post #9 of 21 (permalink) Old 11-17-2007, 07:06 PM
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Re: Outlook rolls back when in drive or reverse in inclined driveway

Reading this thread made me curious so I went out today and tested my Outlook XR FWD.
I found the steepest hill I could find drove half way up and stopped.....took my foot of the brake and I slowly began rolling backwards....and continued to roll until I applied the brake. I had to find a steep hill because when I tried it on a flat road or on a slight incline, it rolled forward as I would expect.
I guess someone on this site (or maybe the sister site Acadia) called it correctly when they said the idle speed is set such that if you are on a flat road or on a slight incline the car will move forward like most people who drive automatics are use to. However if the incline is high enough the force of gravity on this heavy vehicle applys more force than the set idle does thus you roll backwards...
Personally, it's not a problem for me.... if this is the required transmission tuning that it takes to get better gas mileage.
Key1
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post #10 of 21 (permalink) Old 06-03-2008, 07:10 PM
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Re: Outlook rolls back when in drive or reverse in inclined driveway

This will happen to every automatic, it is just a matter of combination between hill incline and weight of the vehicle. Heavier the vehicle is, easier to roll at idle while on hill, for Outlook with it's 2.5 tons this means rolling on not that steep hill.
I've experienced this not in one or two cars (other brands), I consider this normal.

About safety/design flaws ditto what akpeper says couple of posts above.
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