steve walton

2009 hhr lt setting transmssion code po757 solenoid b curcuit stuck open, hard shift 1-2 won,t shift to 3rd, does anyone know where shift solenoid b is located searched under pan already.

donbrew

Basically inside the trans. But could be a wiring related issue.

There is a wiring harness connection to the trans, on the bottom. And the other end is under the Darth Vader hood in front of the fuse box.

This also could be a case where a transmission fluid flush might fix it.

steve walton

don have flushed trans already car has 146k on speedo trying to decide if solenoid b is defective is it worth tearing into tranny to replace it as it is not located under the pan or time to trade.

donbrew

It's not actually in the pan, The valve body is under the side cover, not in the gear box.

Use the search tool, somebody in the last year or so went to the trouble of typing in the procedure to get to it in another thread. Basically, better left to a pro, unless you got time a good garage and a little experience. The part is cheap, the labor is probably around 12 hours.

Check your PM, I have something that may help.

db/sb

I just looked at the manual and the job appears do-able with moderate skills. The service manual also states that after you change the solenoid(s):

fernando pena

Yo tengo ese código en mi HHR 2008 (no hay 3ra ni 4ta velocidad) he cambiado los 2 solenoides (A y B) y el problema no se resolvió.

GoOgle translate:
I have that code in my 2008 HHR (there is no 3rd or 4th speed) I have changed the 2 solenoids (A and B) and the problem was not solved.

donbrew

Could be:
low battery
dirty fluid/clogged internal passages
bad wiring between the TCM and the transmission.

GoOgle translate:Podría ser:
batería baja
fluido sucio / pasajes internos obstruidos
Mal cableado entre el TCM y la transmisión.

Oldblue

I suggest you change all the solenoids

https://www.chevyhhr.net/forums/driv...olenoid-61313/