I've had my SS for about a week, and have put around 1,100 miles on it. This past Friday-Tuesday I've had the check engine light be thrown for a PO757 "Shift Solenoid B stuck" This problem happened after someone almost hit me and I had to slam on the brakes and cut the wheel real hard.

The truck seems to drive and shift fine to me with no slippage. But when the light comes on it seems to be locked in 3rd or 2nd gear, I can turn it off and it will operate fine. It is my understanding that this truck has a Trans-Go HD shift kit with the .500 boost valve also, along with the Corvette 2-4 servo and billet overdrive from PATC.

I was reading on here where if there is a higher stall in the torque converter than it may throw the code. The truck does have a PI Vignette Triple Disc 3K stall in it right now, but it is my understanding that it was tuned for it before I bought it. I have emailed the tuner and I was told that it has never had this problem before and the solenoid may be cracked from the hot ATF running all the time.

I was wondering is there an AC Delco part to replace the B shift solenoid? Is it just as simple as dropping the pan and replacing?

I appreciate any input.

 

Drop pan, pull filter, disconnect the wire, pull the retainer, pull solenoid, reverse to install then add fluid if youre replacing one replace both, and yes acdelco makes them...

 

Theres an ebay listing for a pair of solenoids for about $18-19 i did a google search for acdelco 4l60e shift solenoids and it came up....

 

Thanks for the help guys I replaced both solenoids with AC Delco units part number
214-1893 it made a big difference in how it acts. I guess it was leaving in 2nd gear this whole time and I was just thinking it was revving high due to the stall.

It was pretty easy to do also apart from having to drop the front driveshaft to get the bolts in the shifter bracket and then dropping the driver side exhaust to get the pan to come out easier.

 

I was driving today and the code came back on. When the code comes on it seems to lock my truck in 3rd gear when I have it in drive, but I can shift all the gears manually. I can pull over and shut the truck off for about 5 or so minutes and start it back up and it's fine. The truck did fine all weekend, but when I got back in city stop and go traffic it threw the code again.

Is there anything else that may cause this code besides the tuner not tuning out the code?

 

The valve in the valve body sticking...

 

[QUOTE=TDPalmer;5359755]I was driving today and the code came back on. When the code comes on it seems to lock my truck in 3rd gear when I have it in drive, but I can shift all the gears manually. I can pull over and shut the truck off for about 5 or so minutes and start it back up and it's fine. The truck did fine all weekend, but when I got back in city stop and go traffic it threw the code again.

Is there anything else that may cause this code besides the tuner not tuning out the code?[/QUOTE
What was wrong with it? Mines doing the same thing

 

It ended up being a tune parameter. It's pretty common with 3200 stalls in above is my understanding. I haven't had a problem since.