my 03 silverado has 90k miles on it, lately its been shifting really hard into 2nd gear,i know this is not normal any suggestions how to fix this problem,im gonna drop the pan and change filter anything else i should look at while i have the pan off. thanks

 

While you have the pan off, check the 1-2 accumulator piston for egg shaped axle hole, replace the seal and look to see if the spring is broken.


Allan

 

thanks Allan,one more question would the shift solenoid have anything to do with the hard shifts,it shifts hard when driving normal,if i get on accelerator it shifts fine thanks again for your time. john

 

No,

If it's shifting, it's working. However, if you really want to look it over good, pull shift solenoid "A" and check the 1-2 shift valve that lives behind it; also the spring in behind that valve.

I really think you're going to find a wobbled out accumulator piston tho. That thing has been a sore spot ever since '82 when the transmissions were then called the 700R4.

When that piston is "right", it should be very difficult to get it down in it's bore. Both thumbs, a little vaseline and a few cuss marks.

Allan

 

thanks.would you recommend i replace it with the sonnax pin less,or stay stock