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I have an 18 Armada SL and love it, but I noticed that it holds the gears for longer then I'd like. It goes through the first 2 or 3 gears pretty quick and then for example, I'll be driving at 40 mph and my RPM's are at almost 2k. It won't shift into the next gear until I give it some gas and get up to almost 45 mph. I don't have the "tow mode" on and I'm not driving uphill or pulling anything. Does anyone else have something like that? I don't have a heavy foot and I always accelerate slowly. I'm curious if anyone can tell me at what speeds their transmission shifts from one gear to the next while driving the way I do.
 

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you can reset the ECM to relearn your shift points. over time, the car learns how you drive and adapts to that. there is an ecm reset procedure you can search for here. it is a accelerator pedal push/timing procedure you do. try this first before thinking something is wrong with the car. i would do this all the time on my 2012 qx (which is mechanically the same as your car since they are made on the same line in japan).

if the shifting does not change ( you SHOULD feel a difference) you may need a software update. other second gen armada owners have discussed this on this forum.
 

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I have an 18 Armada SL and love it, but I noticed that it holds the gears for longer then I'd like. It goes through the first 2 or 3 gears pretty quick and then for example, I'll be driving at 40 mph and my RPM's are at almost 2k. It won't shift into the next gear until I give it some gas and get up to almost 45 mph. I don't have the "tow mode" on and I'm not driving uphill or pulling anything. Does anyone else have something like that? I don't have a heavy foot and I always accelerate slowly. I'm curious if anyone can tell me at what speeds their transmission shifts from one gear to the next while driving the way I do.
Yes, that is normal. ECM reset will help a little with that.
 

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I have an 18 Armada SL and love it, but I noticed that it holds the gears for longer then I'd like. It goes through the first 2 or 3 gears pretty quick and then for example, I'll be driving at 40 mph and my RPM's are at almost 2k. It won't shift into the next gear until I give it some gas and get up to almost 45 mph. I don't have the "tow mode" on and I'm not driving uphill or pulling anything. Does anyone else have something like that? I don't have a heavy foot and I always accelerate slowly. I'm curious if anyone can tell me at what speeds their transmission shifts from one gear to the next while driving the way I do.
I am seeing this exact same behaviour with our 4 week old 2020 with 600 miles on the odometer. 1750-2000 rpm while traveling at 40mph. Then minutes later when I'm on the interstate, 1750 rpm while going 70mph. This "transmission seems to be slipping" phenomenon started about a week ago at maybe 425 miles. After finding your post I searched and found a link to reset the ECM. Hopefully that will make it make it forget how to drive so silly.
 

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I have an 18 Armada SL and love it, but I noticed that it holds the gears for longer then I'd like......
cheese-

Did you try to do the ECM reset? Were you able to find the Check Engine Light on you dash?
After unsuccessfully trying to do the reset, I went to the owners manual to try to find the elusive Check engine Light. Apparently the 2020 doesn't have one?

2020ArmadaWarningLights.jpg
 

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I just admit, it is weird. Times I am driving casually going with the flow of light traffic, I am at 40mph and it is holding on to 3rd gear (I believe). 40 mph and at 1750 even maybe 1850 rpm. I find myself lightly pressing in gas pedal for it to hit 4th gear and "relax". I did ask my tech to do an ecm or tranny reset update but that only helps for a very short while. I really dont think the reset on this jatco transmission really makes much changes to shift points. I love the car but out of all the cars I e owned, this tranny takes the cake for being the weirdest. I also experienced times when it upshift so quick. Like going 40 and revs being at 1000 or 1250. Attempting to post picture...
 

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I
Thanks for responding, how do I reset the ECM? I have looked for instructions on how to do it but cannot find anything.
I asked a service advisor at dealership to have the guys do it. He was hesitant and started yapping on how unnecessary it was. Told him just do it. No guarantee if it was done by them, however I did sense a difference with shifting patterns u der certain conditions.
 

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there's an old school way to do it using the key on/ off and pedal presses to reset the ecu. its on this forum if you search.
 

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The instructions are in the post linked below. I tried it once but couldn't get it to work. Probably that I didn't time it properly.. the procedure seems to be very timing-critical.

 

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ive done it many times. the problem is using a stopwatch and timing your pedal presses to the second. it works.

 
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