need help

[maddogg101920]

what is the P0762 i cant find it any were i think its the same code i was getting before i rebuilt the trans but idk since my laptop broke and im checking the codes with the V2.....the trans is in the truck and has fluid but it dosent go into gear and has a hard time moving which is what it did when it broke, i think i might have had more wrong with it then the clutch packs.

 

[SIKDMAX]

NSBU or Converter Drain Down?

 

[maddogg101920]

IDK, i was gettin trim solenoid B codes when the trans went up and its still acting the same but i cant find this code anywere.

 

[Kat]

IDK, i was gettin trim solenoid B codes when the trans went up and its still acting the same but i cant find this code anywere.

P0762-- Shift Solenoid C Stuck On

 

[maddogg101920]

found it on TDG

P0762** Shift Solenoid C Stuck On
P0700** Transmission Control System Malfunction

so how the hell do i fix it :rofl: i found A and B trim solenoids on merchant but thats it.

 

[maddogg101920]

P0762-- Shift Solenoid C Stuck On

thanks kat you beat me to it :hug:

 

[maddogg101920]

i just had a thought, my C1s were burnt so bad the flaked and were all over the inside of the trans, is there anyway that could be the cause of my stuck solenoid.

 

[maddogg101920]

ok well took my valve body apart and it was dirty inside and i noticed that my B solenoid was stuck the spring and rod wouldnt move, i got it out and im cleaning up the valve body and lubing up the springs and stuff and putting it back together and see if that works.

 

[maddogg101920]

well that didnt work still getting the p0762 code and it is in drive in every gear, park , R, N, everyone of em has forward movement, cept R kinda just sits there and revs like it has a load on the motor.

 

[2wd_Sled_Puller]

Curtis pull valve body back off the truck Take the e shift valve out. take a peace of terry cloth and clean the living shit outta it. U want to make sure that your e shift valve will move in and out Freely. I have learned even with the VB being on the bench when u put it in the truck it will still stick.

 

[maddogg101920]

i cleaned the VB and lubed up all the valves and made sure i could move them freely, the B trim solenoid valve was stuck when i pulled it out but i cleaned it and got it to move very nicely, but im getting the code that C is stuck and it dosent have a valve so i ordered a new one ($30) and its on its way, and i hope that fixes it.

 

[SIKDMAX]

When you guys are always ordering Allison parts is it from your local dealers or is there some online source for factory Allison parts?

 

[maddogg101920]

When you guys are always ordering Allison parts is it from your local dealers or is there some online source for factory Allison parts?

i found an online place.

 

[2wd_Sled_Puller]

good luck curtis

 

[Bfox111]

I know this is an old thread but what did you do to fix this problem? My truck is shooting the same code right now and ive cleaned up the VB 3x and still didnt fix. Any help would be appreciated!

 

[Sierra3500HD]

I have the same issue with
My truck rebuilt trans and than replaced c selonoid stuck on all wiring everything has been checked from Top to bottom it's a work truck and it's been down for 2 months anyone with anything please help