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Old 01-12-2006, 09:09 AM   #41
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Ok..let'* put an end to this shifting is bad for an automatic right here.

Pat and Andrew..please post something to back up your claim. Meanwhile Sonoma and I (old timers as we might be) will keep on doing what we do and our transmissions are doing great.
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Old 01-12-2006, 11:24 AM   #42
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Beat the tar out of mine... Still going at almost 145,000

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Old 01-12-2006, 12:29 PM   #43
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Quote:
Originally Posted by BillBoost37
Ok..let'* put an end to this shifting is bad for an automatic right here.

Pat and Andrew..please post something to back up your claim. .
Quote:
Originally Posted by jr's3800
The PCM, Cars computer controls the 4T60-E... All of the upshifts and down shifts are controled as so... If you left the trans in first and floored it the PCM would shift into second for you no matter what... If you don't wear out the trans first, you may wear out the Trans Range switch leaving the PCM wondering what gear you have selected... These transmissions are not built for abuse, they are intended to be a gennerally nice shifting trans that will do a good job over the course of its life, and tow a little behind you...

The only thing I can see happening is the trans wearing out early on...
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Old 01-12-2006, 12:31 PM   #44
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Quote:
Originally Posted by 1993 SLE
Quote:
Originally Posted by jr's3800
The PCM, Cars computer controls the 4T60-E... All of the upshifts and down shifts are controled as so... If you left the trans in first and floored it the PCM would shift into second for you no matter what... If you don't wear out the trans first, you may wear out the Trans Range switch leaving the PCM wondering what gear you have selected... These transmissions are not built for abuse, they are intended to be a gennerally nice shifting trans that will do a good job over the course of its life, and tow a little behind you...

The only thing I can see happening is the trans wearing out early on...
If you shifted versus leaving it red lining in one gear...where is the problem? What negative effects does this have?

And read Don'* last post...
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Old 01-12-2006, 12:38 PM   #45
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the trans is electronically controlled....and has inputs from the gear selector and many other inputs....the automatic upshift in first is to pervent the engine from blowing not to save the trans....its more wear and tear on the trans, something the 60'* dont need, the PCM KNOWS better than you when to shift, and when the trans is held in the higher RPMS that is the trans spinning faster than it likes to...this creats heat....heat is not good for the trans...heat kills the trans

for example....Gordy manually shifted his trans....he went through 3 of them in his SSEi before he learned.....go through the posts of Manually shifting in the search....anyone who did it for an extended period of time went throught one or more trans.....

and Don beat his.....letting the trans shift, not by manually doing it
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Old 01-12-2006, 12:44 PM   #46
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My question needs to be rephrased...What is the problem with shifting it manually w/o beating on the car?

(And...uh..Don shifts..lol)
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Old 01-12-2006, 01:08 PM   #47
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Quote:
Originally Posted by BillBoost37
My question needs to be rephrased...What is the problem with shifting it manually w/o beating on the car?

(And...uh..Don shifts..lol)
In reality there is no reason to manually shift a 4T60-E... If you were to keep it in first with you foot on the floor the trans will still shift out of first into second with the selector in 1...

So nailing your foot to the floor would serve the same purpose... But I also feel it depends on the situation... When I go through the hills and mountains I have to manually shift from 2nd to (OD) depending on where I am and how badly I want to save my brakes... Imagine going down a steep grade... Riding the brakes will heat them so bad the fade will make it feel like you have no brakes.. In this case 2nd gear at 60mph will not kill the car or trans... It will heat the trans up a bit tho...

Manually shifting all of the time may wear out the range switch, I have seen these switches go bad with no help BTW... And others that were abused and never went bad... Then there is the Gear select lever/Rod... There is a O- Ring that can wear out, and a few other various parts in the trans... But when was the last time we saw one go bad?

Do I reccomend shifting manually all of the time.... NO I don't... Do I do it from time to time.... Yes I do.. Have I destroyed the trans yet... No I have not... But at almost 145K if it goes out it goes out... I could care less because in no time I would have another...

Now a time or two I have seen where the parking Prawl, which is controled by that rod go bad... Makes it a PITA to get it into park and sometime a PITA to get it out of park... But on the 60-E this does not seem to be much of a problem...

Again I do not reccomend manually shifting, Unless you are in a situation that requires it such as engine braking... But a little fun here and there will not murder the tranny... But you have to remember in the long run, abuse will add up...

Also the Range switch monitor gear select... If this switch wears out, if memory serves it defaults to the standard... Say the switch was about dead and didn't relay any info to the PCM as to what geat it was in than you would not have manual 1 or 2 for that matter... Again thats iirc ...

Yes I am abusive to my 95 and 91, always was and still am... I manually shift for fun from time to time.. Both of my transmissions are still with me...Even the 440-T4

If you were to throw a 440T4 into reverse serious damage could result... If you did this to a 4T60-E the car may be killed( PCM ) and you could possibly do some damage as reverse is not electronic, its manually controled...

So again, unless the situation requires it, there really is no reason to shift manually.. But now and then won't kill it either...

Also incase we haven't all noticed this thread was not a manually shifting debate... It was a Collum vs Floor mounted shifter...

Thank you

This is the last comment I'm making on this thread

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Old 01-13-2006, 05:31 AM   #48
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nice post Don. That is what i was saying all along. It doesnt hurt to downshift for hills, but manually shifting will not give you any advantage. It just gives you the possibility for transmission damage.

Back to the debate!
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