Lost 3-4 gear?!!

[chevysub]

Well after getting my suburban running it will shift from 1-2 and it will just rev when it hits third gear no codes could it be a 2-3 solenoid or I am I looking at a rebuild? How can I put the tranny in limp mode to see if 3rd gear grabs? thanks 1997 suburban 5.7 4x4

[chevysub]

forgot to mention it has very strong reverse works good.

[Jimmiee]

You can pull the transmission fuse. That will cut the voltage to the trans which should default to 3rd gear. A check of trouble codes will also help pinpoint the problem. A bad solenoid will not cause a neutral condition. Hows the fluid condition?

[chevysub]

Fluid doesn't look too healthy what is the fuse called that I should pull? Thanks

[Jimmiee]

It will say transmission or trans. You can also disconnect the connector to the trans but that's a lot of work.

[chevysub]

I looked at fuses the one in the engine and the driver side panel and I didn't see a fuse called trans is there another block of fuses somewhere?

[chevysub]

sorry found the fuse its the PRND321 Fuse will I pulled it and dropped it to D and it grabbed good like it was in first so I dropped the gear into first and it moved up slowly like it was in third so whats going on whats my next move? thanks.

[Jimmiee]

If you don't have 3rd gear with the fuse removed the 3-4 clutches are probably burned up. Pull the pan to verify.