Why does my trans. shift hard after it warms up ??
Thread Starter
Member
Posts like a V-Tak
Joined: Mar 2007
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From: Mt. Pleasant Mi
Why does my trans. shift hard after it warms up ??
I have a '98 Bonneville SLE 3800 with a little over 100,K I bought the car used and after it warms up it shifts like it has a shift kit.
That can't be good.
Has anyone else had this problem ?
Does anyone know what causes this ?
Any help would be appreciated. Thank you,,,,,,,Doug
That can't be good.
Has anyone else had this problem ?
Does anyone know what causes this ?
Any help would be appreciated. Thank you,,,,,,,Doug
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Seems to me that the car may be due for a Trans service...
Check the color of the Trans fluid and check back with us
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Check the color of the Trans fluid and check back with us
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Junior Member
Posts like a V-Tak
Joined: Oct 2005
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From: Fremont, CA
Common problem with the 4t65e. You need a new pressure control solenoid inside the side cover of the trans. Part is about $40 but it is 4 hours of labor to change it. Hope this helps.
Senior Member
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From: San Diego, CA
Check the trans fluid level, also...car driven around through all gears, fully warmed up, then check dipstick on level ground with engine running and trans in park (or neutral with park brakes on).
Make sure you're not over or under full.
Make sure you're not over or under full.
RIP
True Car Nut
Joined: Jul 2004
Posts: 5,656
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From: Grand Rapids, Mi
The PCS is a known issue for harsh shifts, but not the only cause. Make sure you rule out simple things like a fluid and filter change, proper levels, etc., (as mentioned) before you spend big bucks on something that may or may not be needed.
Thread Starter
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Posts like a V-Tak
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From: Mt. Pleasant Mi
Yes I also thought the fluid was the cause so I had the trans. flushed and filter changed.
It stills shifts hard.
Thank you for your responses.
1997SESC when you worked on the Pontiacs at G.M. did you ever work on any '68 Firebirds ?
I have one of those to.
I think Pontiacs Rock !!
It stills shifts hard.
Thank you for your responses.
1997SESC when you worked on the Pontiacs at G.M. did you ever work on any '68 Firebirds ?
I have one of those to.
I think Pontiacs Rock !!
Senior Member
Posts like a Turbo
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From: Michigan
sounds like the same problem I have, the pressure control solenoid. you might not have to worry, your trans is not toast if that'* it, just change that solenoid. hope that helps a little 
