Sent my E34 to M-scope repair my GM gear box last Thursday.My gear box always slip on 2nd and 3rd speed.Today went to try the car, but the gear box still slip and shown transmission problem icon.So upset now.....$$$ gone, but my babe not fix.
Mscope should do it for free as it is part of the warranty unless he didn't change the solenoid in the first place whether he thought it was ok or the problem developed later after the other parts are replaced. This one we will never know.
But I hope good faith will prevail and in any case he should NOT charge you any labour.
There is no extra chargers on two valve solenoid. It cost 4.8k to overhaul the gearbox.
After they overhaul my gearbox, car still slip on 2nd and 3rd gear. After changed the valve solenoid everything fine.
Refer this this link http://tis.spaghetticoder.org/s/view.pl?2/04/85 item 32 and item 33.