Originally Posted by power house
I have the same Surging problem in a 2000 SSEI. Been chasing this for a while!
I still drive it 100 miles a day but would like to find the root problem. I think a lot of the SSEIs have this problem! I have also done most of the same trouble shouting as you!
** I think my next plan is to change the EPC and the valve body in the trans! **
** While in there it is a good idea to also change the TCC! **
But this looks like a full day of labor?
There is a GM TSB # 020730048 for a PCS replacement
Yep I just had my tranny rebuilt and the problem remains... They put in a new torque converter, clutches, bands, 1 drum, replaced the splined (output shaft?), new solenoids, shift kit, amongst other things. So if I can find any other problems this weekend I'll go back to the transmission shop that did the work and talk to them. At 73k miles I suppose a rebuild is a good idea but it didn't solve the surging problem as the tranny shop would have me believe.