1-2 Shift Problems

[Blackrider]

Ok So over the past few months my car has been a dog shifting into second I mean it take 1-2 seconds to complete the shift. It only happends when it is warm. it shifts fine when it is cold. Now i was talking to Seth (Iceman) and he said he has been having the same problem. There is a Possible TSB on the issue sound like a shift solinoied. anyone elce having this problem. Dave I'm looking in your direction.

[BLACK99GT/ROB]

I have the same problem.I am interested as well in finding a fix.

[EBlend]

had the same problem on mine, got an autotrans interceptor, set the value just a little higher then stock and the problem went away. Seems like too little tranny fluid pressure to move the solenoid..i guess maybe a little oil or dirl build up around the solenoid or something, but since i put my ati i have had no problems at all

[rizer]

im at 90k on my car and have the same problem. When shifting to 2nd, it kinda feels like your driving a stick shift. Ive posted several threads and most people said theres does that also and its just a sloppy GM thing. ??

[tubbsGT1]

have the same problem myself.....also wondering what to do to fix it????

[sicc]

when i had this prob about 2 years ago, i purchased the b&m shift kit [for the performance, not to try to fix it] and i noticed it go away after a while. ive also noticed the computer seems to adjust after using the shift kit a few times. i noticed when i didnt have it on, i would still get pretty firm and quicc shifts... im not suggesting this as a fix at all, cuz in most cases it could make the situation a lot worse, but it seemed to just be a line pressure case for my GA.

[iceman]

My line pressure is up with the DHP and it never did it before.. so I'm thinkin mechanical probs... I gotta call the trans shop later and see what they have to say.

[Blackrider]

Here is a vid it will be up for a few H take a look
http://www.domesticcrew.com/colin/jo...4/PICT0004.MOV

[iceman]

Exactly what mines doing. I have an incar video from the drag strip this weekend too I should post it.

[Blackrider]

Originally Posted by iceman

Exactly what mines doing. I have an incar video from the drag strip this weekend too I should post it.

Dont mind my Warped Brake rotors, the new one are on order But i'll let you know tonight, colin is going to talk to the tranny guy today

No wonder you ran so slow man, that shift is like 3 seconds long!

[kubiache]

Hey, bro...just saw this thread. That's worse than mine ever was. I think in all my tinkering around with it, the worse it ever got was about .9 seconds. If I had to guess I'd agree with Iceman that it's something mechanical, and most liekly the 1-2 shift solenoid. Good luck with it man. It's about time for you to get a new pb at the track!

[rizer]

Originally Posted by Blackrider

Here is a vid it will be up for a few H take a look
http://www.domesticcrew.com/colin/jo...4/PICT0004.MOV

Sounds just like mine, maybe just a tad shorter.
Gets annoying

[preed4962]

Neutral Flare and/or RPM Flare While In Drive, No 1-2 Upshift, Service Engine Soon (SES) Light Illuminated, Diagnostic Trouble Codes (DTCs) P1810, DTC P1815 Set (Reprogram the Powertrain Control Modul #03-07-30-021A - (11/19/2003)
Neutral Flare and/or RPM Flare While In Drive, No 1-2 Upshift, Service Engine Soon (SES) Light Illuminated, Diagnostic Trouble Codes (DTCs) P1810, DTC P1815 Set (Reprogram the Powertrain Control Module (PCM), Replace Transmission Fluid Pressure (TFP) Manual Valve Position Switch)
1995-2003 Chevrolet Cavalier

1997-2003 Chevrolet Malibu

1999-2003 Oldsmobile Alero

1995-2003 Pontiac Sunfire

1998-2003 Pontiac Grand Am

with 4T40E Transmission (RPO MN4) or 4T45E Transmission (RPO MN5)

This bulletin is being revised to add reprogramming of the PCM on 2003 V6 models. Please discard Corporate Bulletin Number 03-07-30-021 (Section 07-Transmission/Transaxle)

Condition
Some customers may comment on a neutral flare and/or RPM increase while in drive or no 1-2 upshift and/or the Service Engine Soon (SES) telltale may be illuminated. On 1995-2002 model vehicles, the Powertrain Control Module (PCM) may set a DTC P1810 while on 2003 model vehicles, the PCM may set a DTC P1815.

Cause
The cause may be the transmission fluid pressure (TFP) switch (also known as the pressure switch manifold (PSM)). It will be referred to as the TFP switch in this bulletin.

[Blackrider]

Originally Posted by preed4962

Neutral Flare and/or RPM Flare While In Drive, No 1-2 Upshift, Service Engine Soon (SES) Light Illuminated, Diagnostic Trouble Codes (DTCs) P1810, DTC P1815 Set (Reprogram the Powertrain Control Modul #03-07-30-021A - (11/19/2003)
Neutral Flare and/or RPM Flare While In Drive, No 1-2 Upshift, Service Engine Soon (SES) Light Illuminated, Diagnostic Trouble Codes (DTCs) P1810, DTC P1815 Set (Reprogram the Powertrain Control Module (PCM), Replace Transmission Fluid Pressure (TFP) Manual Valve Position Switch)
1995-2003 Chevrolet Cavalier

1997-2003 Chevrolet Malibu

1999-2003 Oldsmobile Alero

1995-2003 Pontiac Sunfire

1998-2003 Pontiac Grand Am

with 4T40E Transmission (RPO MN4) or 4T45E Transmission (RPO MN5)

This bulletin is being revised to add reprogramming of the PCM on 2003 V6 models. Please discard Corporate Bulletin Number 03-07-30-021 (Section 07-Transmission/Transaxle)

Condition
Some customers may comment on a neutral flare and/or RPM increase while in drive or no 1-2 upshift and/or the Service Engine Soon (SES) telltale may be illuminated. On 1995-2002 model vehicles, the Powertrain Control Module (PCM) may set a DTC P1810 while on 2003 model vehicles, the PCM may set a DTC P1815.

Cause
The cause may be the transmission fluid pressure (TFP) switch (also known as the pressure switch manifold (PSM)). It will be referred to as the TFP switch in this bulletin.

Ehh I dont think so

[killerhound]

Mine's doing the same thing, and is going to our GM store tomorrow onto the trans machine to see if they can diagnose the prob.

[AznGA]

I had the same problem. But after I unplugged the battery, it went away. But I have a new problem now. When I accerate slow, when it shifts from 2-3 or 3-4, the RPM just bounces up and down and it would only shift when I give it more gas. Is this related to solinoid? How hard is it to replace this? It started doing it when I got my intake.

[iceman]

When you reset your PCM, it may not firm up for weeks.

[AznGA]

Originally Posted by iceman

When you reset your PCM, it may not firm up for weeks.

Are you referring to me?

[fo44rd]

Originally Posted by preed4962

Neutral Flare and/or RPM Flare While In Drive, No 1-2 Upshift, Service Engine Soon (SES) Light Illuminated, Diagnostic Trouble Codes (DTCs) P1810, DTC P1815 Set (Reprogram the Powertrain Control Modul #03-07-30-021A - (11/19/2003)
Neutral Flare and/or RPM Flare While In Drive, No 1-2 Upshift, Service Engine Soon (SES) Light Illuminated, Diagnostic Trouble Codes (DTCs) P1810, DTC P1815 Set (Reprogram the Powertrain Control Module (PCM), Replace Transmission Fluid Pressure (TFP) Manual Valve Position Switch)
1995-2003 Chevrolet Cavalier

1997-2003 Chevrolet Malibu

1999-2003 Oldsmobile Alero

1995-2003 Pontiac Sunfire

1998-2003 Pontiac Grand Am

with 4T40E Transmission (RPO MN4) or 4T45E Transmission (RPO MN5)

This bulletin is being revised to add reprogramming of the PCM on 2003 V6 models. Please discard Corporate Bulletin Number 03-07-30-021 (Section 07-Transmission/Transaxle)

Condition
Some customers may comment on a neutral flare and/or RPM increase while in drive or no 1-2 upshift and/or the Service Engine Soon (SES) telltale may be illuminated. On 1995-2002 model vehicles, the Powertrain Control Module (PCM) may set a DTC P1810 while on 2003 model vehicles, the PCM may set a DTC P1815.

Cause
The cause may be the transmission fluid pressure (TFP) switch (also known as the pressure switch manifold (PSM)). It will be referred to as the TFP switch in this bulletin.

At approximately 15,000 miles my SES light came on...and it was that code........the dealer did the above mentioned.......I always felt 1-2 to be a little sloppy.....not enough to complain about.........that service did nothing for my car.......still, in my opinion a little sloopy 1-2!!!!!!!!


CAN ANYONE BE MORE SPECIFIC ON THE LINE PRESSURE ISSUE......I THINK THAT IS THE XAUSE OF THE SLOPPINESS IN MINE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

[AznGA]

Whatever the problem is, I just hope the tranny itself is fine...with lower intake gasket leak and all that, I don't need to spend anymore money on rapairs. I wanna mod!