Transmission Slipping

[Doughboy80]

Hello all, My aunts 01 impala has trans problems. What it was doing is it will run for 20 foot or so then wont move you can shift between gears and can not feel it even trying to shift from drive to reverse. Turn motor off and restart and it will most of the time move another 20 feet then mess up agian. check engine light came on and codes present are p0742 torque convertor curcuit stuck on and P0757 Shift solenoid B curcuit stuck on. If anyone could point me in the right direction i would be thankful.

[maxwedge]

Welcome to AF, this points to internal electrical problems with the trans and possibly a major repair, addt'l diagnoisis by a trans tech will required here. Fluid full and clean I presume?

[Doughboy80]

Hello all ok just to let people know what i did was just changed fluid and filter. so far so good probably not going to last a long time. but oh well she thinking bout tradin in.

[j cAT]

Originally Posted by Doughboy80

Hello all ok just to let people know what i did was just changed fluid and filter. so far so good probably not going to last a long time. but oh well she thinking bout tradin in.

this is common when fluids are not replaced when they get damaged by overheating.... if this vehicle is used in hilly country in temps above 90 deg f your fluid needs replacinng every 30,000mi.... if fluid is damaged [smells bad cloudy] you may need to drain and refill 3x .......