Is it jerking only from stops? That happened to me in my 05 LT. It started around ~76,000km. I had a code P1811 I got with my scanner. It's an enhanced code and won't set the check engine light. If so, it's likely the pressure-control solenoid. I've heard its not uncommon and it shouldn't be too expensive of a fix (mine is still on ext. warranty and I think there was ~1 hour of shop time involved).

 

I just had the pressure control solenoid replaced on my 02 MTC ......same as you said hard shifts after driving for awhile,,,,worse when the weather is hot......it should show up on code...replaced solenoid,filter,fluids etc....shifts fine now....thing is you have to drop the subframe and support the motor to change it,,,,lucky i have a gm mechanic to work on my cars....cost me about 460.00 for it.....next it will be replace the intake gasket before i have problems....just had my 02 gran prix gt intake changed

 

Hey guys im having the same problem with 02 ss. It has almost 60,000 miles on it and after about a half hour of driving it shifts hard into 2nd and 3rd. I was rear ended about a month ago so I told the insurance company it started happening after the accident (a little white lie). They are going to take my car to the chevy dealer to diagnose the problem. I'll see what they say and if it needs a solonoid replaced and it won't be covered from the accident I'll take it somewhere else.

 

yeah i think im having the same problem with my car and it just hit 60k. i'm wondering if i should do a fluid and filter change or save my money to replace the solenoid? or would a shift kit put a bandaid on it for awhile?

 

i had the valve body replaced in my 03 monte because of hard shifts

 

i just had my tans changed, about......say....five months ago, and it still shifts hard, very hard when i stop at a red light and then go to pull off and it jerks super hard after it hesitates.

 

mine happens alot during stop n go traffic once hits that 2nd gear feel like someone kickin me in the rear end and the same when slowing down.

 

Wasn't this a problem GM is aware of?

This "sometimes" happens to me after driving on the highway. I'd start from a stop and it would shift hard into 2nd & 3rd the most.

Although after using some lucas oil it helped...

Do all of us whip the car hard, maybe that can be the reason? lol

 

thats what my 03 did...but it just kept getting worse and worse...luckly the dealer i bought it from ran it threw an insurance claim (auto4life) and i got my valve body replaced for a $100 (supposed to be 1300)