[Gmecm] GM Trans Pressure Adaptive memory question

[WopOnTour]

Hi Mike
The PCM uses the transmission input and output speed sensors for 
calculating/adjusting the TAPs NOT the ABS wheel speed sensors.Your WSS/TPM 
issues are very likely unrelated to your transmission conditions. I would 
start with performing a proper line pressure test using a scan tool and 
gage. If you need the specs, feel free to email me
HTH
WopOnTour

----- Original Message ----- 
From: "Mike V" <efi at dyakron.com>
To: <gmecm at diy-efi.org>
Sent: Friday, January 13, 2006 8:38 PM
Subject: [Gmecm] GM Trans Pressure Adaptive memory question


> Hi Guys,
> I think I shot myself in the foot.  My 2000 Impala has a 3800 engine
> and 4t65e trans.  The trans is acting wierd from a line pressure
> standpoint.  Shifting really hard at times, slipping at others..
> After doing a little reading, I realized that I may have caused
> this problem myself by ignoring a "low tire" idiot
> light, which I think was caused by a bad wheel speed sensor.
> My tire pressures are fine.
> In reading a little about it there are memory cells for adapting
>  line pressure up or down, depending on how the speed sensors
> report during / after gear changes.
> Is there a way to clear this tranAdaptivePresure memory (TAP?)
> without a scan tool?   Thanks for any help.  I hope I didn't kill
> the daily driver.
> Mike V
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