15' Grand Cherokee uphill gear engage problem - JeepForum.com
 
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post #1 of 4 Old 07-12-2020, 11:09 AM Thread Starter
shtdaprdtr
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15' Grand Cherokee uphill gear engage problem

A year ago my wife and I bought a 2015 grand cherokee Laredo from a lease return with 30K miles. Not sure where i read it but I believe the truck had a software update as I cannot drive the car with the door open as the tranny goes into park. Well I noticed that if I'm on a hill and I reverse..then shift into drive, when I go to accelerate the car doesn't move..as if its in neutral. Sometimes I may hear a low rumbling like a rock tumbler noise. The same thing happens in reverse. I also feel the brake pedal drop a little when that happens sometimes. Its my wife's car so I never drive it and I just discovered that the other day...she says its been like that since we got it (thanks for telling me!! &#x1f620. I was wondering if anyone's got an explanation or is experiencing the same thing..

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post #2 of 4 Old 07-12-2020, 11:19 AM
ColdCase
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Have the transmission fluid level checked. Otherwise it sounds like the transmission oil pump is drawing in some air when on an incline.

I was born with nuttin' and I still have most of it
Current: 2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6
Previous: 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac
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post #3 of 4 Old 07-12-2020, 01:53 PM
Jurassic_Jeep
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Wondering how steep of hill it is. This could be the hill assist feature, and the rumble sounds you hear could be the brakes breaking loose.

2014 Jeep Grand Cherokee Summit 4x4 3.6L V6.
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post #4 of 4 Old 07-12-2020, 03:48 PM
ColdCase
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Good point. I was assuming the OP knows what hill assist is, and was talking about flare... bad assumption perhaps.

The jeep will hold the brakes for awhile so you don't drift backward as you move your foot from the brake to gas pedal, and then releases the brake when you apply enough gas.

I was born with nuttin' and I still have most of it
Current: 2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6
Previous: 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac
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