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Old 04-17-2018, 06:17 AM   #15
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Originally Posted by Switchflicke View Post
I'm not sure what that means. I use the cruise all the time except climbing steeper hills and even then if I can be enough on the ball to turn the OD off, the cruise will keep me at the target speed without downshifting.
Am I doing it wrong for best MPG?
That has been my experience.
1st choice Cruise Control w OD
2nd choice in hills... CC on but manually shift out of OD a little sooner that trans to keep speed up
3 rd choice steep hills CC off & manage OD, gears & fuel to balance RPM speed more for performance when climbing steeper climbs.
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Old 04-17-2018, 06:36 AM   #16
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If you are looking for better performance 5 Star Tune might help.

My Chevy 8.1L with the 6 speed Allison performs well and does not constantly shift in and out of high gears.

I rarely see 8 mpg though. It is usually between 7 and 8 mpg.
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Old 04-19-2018, 11:11 AM   #17
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What kind of problem are you experiencing?


How do you check transmission fluid without a dipstick
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Old 04-19-2018, 03:06 PM   #18
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How do you check transmission fluid without a dipstick
Are you saying you have an Allison and No dipstick?
I only have first hsnd experience w a '03 Allison 1000 and a '12 A 3000.
W/ 1000 only check was via dip stick
W/ the 3000 Allison states dip stick is for rough check only and recommends the self diagnostic mode for best accuracy... get to oper temp and push the right combo of buttons (forget the exact combo w/o checking manual) and the tranny tells you if full or how much to add.
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Old 04-20-2018, 08:27 AM   #19
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Are you saying you have an Allison and No dipstick?
.
My 2007 Chevy Cobalt has no transmission dipstick, but of course that's a completely different animal. For the Cobalt I'm told that you check the transmission in a similar way that you check the diff on a rear wheel drive car. That is a horizontal plug is removed and you stick your baby finger in the hole looking for some fluid. Like I say different animal to an Allison.
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Old 04-20-2018, 09:19 AM   #20
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My 2007 Chevy Cobalt has no transmission dipstick, but of course that's a completely different animal. For the Cobalt I'm told that you check the transmission in a similar way that you check the diff on a rear wheel drive car. That is a horizontal plug is removed and you stick your baby finger in the hole looking for some fluid. Like I say different animal to an Allison.
My '16 Honda has the same arrangement.
I have to admit I don't think I have ever added trans fluid to any vehicle in last 20+ yrs.
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Old 05-30-2018, 12:27 PM   #21
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I disconnect my engine battery with a blade switch and it has no affect on the transmission shifting, no relearning involved as far as I can tell.
I have had battery disconnects to all batteries for quite a few years, and I agree with you that when turned back on and I resume driving, I don't think the transmission is 'relearning' shift patterns. It always goes through all five gears properly, without delay and with no hard shifts. -RT
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Old 05-30-2018, 12:54 PM   #22
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I have had battery disconnects to all batteries for quite a few years, and I agree with you that when turned back on and I resume driving, I don't think the transmission is 'relearning' shift patterns. It always goes through all five gears properly, without delay and with no hard shifts. -RT
I have posted that on here a few times. Disconnecting the batteries does not cause the trans to re-adapt. The adaptive parameters are stored in a non-volatile memory area of the controller. They don't go away with a battery disconnect.
The only way to cause the transmission to re-adapt is a reprogramming event or a reset to fast adapt in Allison DOC.
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