Perform Shift and Normal Shift do nothing? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-19-2007, 06:53 AM   #1
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Default Perform Shift and Normal Shift do nothing?

I notice that I shift right around 5880-5920 in both perform shift and normal shift.

I take it this is not normal. Is there anything I can do to fix this? My only guess is that the transmission was replaced at some point in time with a junkyard trans from the wrong car.

I'm curious as to what others are running as far as shift points on their 97-99 cars.
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Old 03-19-2007, 08:29 AM   #2
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Your best fix is to realize that nothing is wrong. Search this topic out in the forums. Nearly everyone asks the same thing.

Maybe when they are new the transmissions feel different, however by the time we get them...you can't feel nada. BTW..check at WOT or Bill W will post that right after my post

With a full Intense rebuild.. I feel a difference.
WillWren was able to see a couple hundred rpm difference on a logging scan tool.

The change is minor, if you can log data with your scantool, I'd suggest trying it both ways and comparing the data.
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Old 03-19-2007, 08:54 AM   #3
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You must be WOT for the difference.
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Old 03-19-2007, 10:51 AM   #4
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And, for the record, "perform" shift is actually normal operation, and "normal" shift is econo-shift. :P
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Old 03-19-2007, 12:22 PM   #5
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Quote:
Originally Posted by TrueWildMan
And, for the record, "perform" shift is actually normal operation, and "normal" shift is econo-shift. :P
If you notice the 1-200 rpm difference, yes.

Until my rebuild..there was no noticable difference unless the scantool data for two runs was reviewed.
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Old 03-19-2007, 12:24 PM   #6
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Quote:
Originally Posted by BillBoost37
Quote:
Originally Posted by TrueWildMan
And, for the record, "perform" shift is actually normal operation, and "normal" shift is econo-shift. :P
If you notice the 1-200 rpm difference, yes.

Until my rebuild..there was no noticable difference unless the scantool data for two runs was reviewed.
Yep! In my '93, I could tell the difference, it just shifted at a different RPM. But it was modded a bit.
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Old 03-19-2007, 03:33 PM   #7
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i mean no difference the numbers you see are from my scantool.

sometimes its even closer, those were the max on the same flat road, at wot.

my numbers in normal shift: 5880, 5892, 5918.
my numbers in perform shift: 5876, 5897, 5920

I'M 100% SURE there is no difference, there is a 300 rpm difference or so on the 93 at least.
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Old 03-19-2007, 08:11 PM   #8
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Quote:
Originally Posted by Hans
i mean no difference the numbers you see are from my scantool.

sometimes its even closer, those were the max on the same flat road, at wot.

my numbers in normal shift: 5880, 5892, 5918.
my numbers in perform shift: 5876, 5897, 5920

I'M 100% SURE there is no difference, there is a 300 rpm difference or so on the 93 at least.
You have normal/performance switch in your '98?
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Old 03-19-2007, 08:13 PM   #9
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I'm pretty sure all Ei'* came with the shifting mode buttons.

Maybe yours is broken? Either way, your shifts are where they should be.
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Old 03-19-2007, 08:40 PM   #10
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Quote:
Originally Posted by BillBoost37
I'm pretty sure all Ei'* came with the shifting mode buttons.

Maybe yours is broken? Either way, your shifts are where they should be.


Are you ribbing me? Trying to get me off my lame, disabled arse and go look? :P

I don't believe '00+ has that option anymore, if the '98 did.







So, unless the Canucks had no use for 'em, I don't see one... :P
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