I have a 01 Blazer AT. While driving on the beach in 4wd my check engine light came on and the truck wouldn't shift out of 3rd gear. I can manually shift between 1st, 2nd, and 3rd on the column fine, but when I put it in D it is stuck in 3rd. I checked the codes and I had error for all the transmission solenoids 1-2, 2-3, 3-2, TCC, and TCC PWM. I replaced all the solenoids but still have the same problem. Any suggestions will be greatly appreciated. Thanks.

 

Check the CLSTR fuse in the instrument panel fuse box. It provides power to all of those solenoids.

 

Swartlkk, Thanks for responding. I checked the fuse and it is good.

 

Next, check for power to the solenoids with the key on. You may have broken the wire at some point during your offroading trip.

 

Can I check for power in the harness somewhere before it enters the transmission? If I can avoid it I would rather not drop the transmission pan again.

 

Yes, it will be the pink wire at pin E in the main transmission connector located on the passenger side of the transmission.

 

Thanks again for the replies. It looks like I'll have to check it tomorrow. It is storming terrible here now, but I'll let you know how I make out tomorrow.