codigo P0756 shift selenoid ``B`` Blazer 98

[BLAZER_LS98]

Please I need an orientation. After I made a filter and fluid change, in the transmission of my Blazer 98, 4x4, it doesn`t start running in D and a service engine soon light coming on. I took the Blazer to mechanic and the computer issue a codig P0756, shift selenoid B, performance or stock off. Any body had have same problem?, it will fix if I change that selenoid or I need to change all selenoids sistem?, is possible a diferent problem that is causing the Blazer doesn`t run in D?, after start running in 3 or 2 it rolling good in D, but every stop I need change from D to 3 and then from 3 to D. I hope you undestand me because english is not my first languaje.
Thanks

[MT-2500]

You knocked the plug in off of the solenoid when you dropped or installed the oil pan.

Remove the transmission pan and plug it back in if it is unpluged.
If you broke it you will need to repair or replace it.
Look on the rear of valve body.
MT

[BLAZER_LS98]

Originally Posted by MT-2500

You knocked the plug in off of the solenoid when you dropped or installed the oil pan.

Remove the transmission pan and plug it back in if it is unpluged.
If you broke it you will need to repair or replace it.
Look on the rear of valve body.
MT

Ok, Thanks. Tomorrow I going to do it. Is possible it was broken by the mechanic, I saw he got trouble for to move the filter, due it is 4x4, I don`t know any thing of mechanic, so, after he finish the job the Blazer doesn`t run in D. Is possible he left unplug the solenoid.

[MT-2500]

Originally Posted by BLAZER_LS98

Ok, Thanks. Tomorrow I going to do it. Is possible it was broken by the mechanic, I saw he got trouble for to move the filter, due it is 4x4, I don`t know any thing of mechanic, so, after he finish the job the Blazer doesn`t run in D. Is possible he left unplug the solenoid.

Thake it back to him and ask him to check it on his dime.
99 times out of a 100 the plug in on solenoid was knocked off.
Remove the oil pan and plug it back on.
And you should be set to go.

The oil pan is real close to solenoid plug in and easy to unplug the plug in when removing or installing the oil pan.
Better to move the crossmember back some for more clearance or at least raise transmission a little.
Good luck
MT