2001 BLAZER in limp mode. Replaced both shift solenoids still doing the same thing
 

2001 Blazer. Change transmission fluid 3 weeks ago no flush. Went into limp mode only have 1st and 3rd gears
Replaced speed sensor did not help. Replace both shift solenoids still only have 1st and 3rd.

By the way, no codes show up.

What does it due when it try’s to go to second gear? Does it freewheel or not even attempt to go into second or fourth?

It high revs in first when I take off then when I let off the gas it shifts into what is probably 3rd gear. If I manually shift it into second gear while running second gear will not engage. When I'm running in what is probably 3rd gear and shifted to neutral and then back to drive I think fourth gear engages but when I step on the gas and goes back to 3rd.

Possibly have a broken band. Really need to have it scanned and watch on the data stream if 2nd and 4th are being commanded. If they are you can be pretty sure it is a mechanical failure. Not all that common on the 4l60E but it does happen. Good luck.

I did have it scanned when it started happening and no codes came up. I can downshift into 2nd.

Pep Boys told me tranny codes do not show on a computer scan???

You will need to get it scanned with the proper OEM software that can monitor all the data live. Dealer or well equipped repair shop. Really the only way to diagnosis and not just start by replacing parts. Why did you change the fluid initially?

I appreciate your responses. Changed the fluid because it was time. There was no burnt smell to it and the color was okay. I'm going to a mechanic today that was recommended by a friend. Hopefully he can run a diagnostic for freeBee. I wasn't randomly replacing parts really it just seemed like the logical progression.


A side question, I wonder how I ended up with a Blazer without overdrive. My brother and father both have S10's with overdrive. When I bought it I just didn't think about it. Why would Chevy do that instead of making all S10's with overdrive?

If all you have is a hammer, everything looks like a nail.

You have a overdrive transmission. 4L60E -4 speeds-L longitude-60 series-E electronic controlled. Hope you get some answers.