OWENMUSTANG

iTrader: (2)

any trans guru's out there?
i have a 4l60 that seems to have lost 1st...

doesn't seem to have any other problems other than a lack of 1st gear..
oh, i replaced both the 1-2 and 3-4 soleniods. didn't help...

thanks

performabuilt

iTrader: (25)

when you say no first does that mean it has a normal 2-3 and 3-4 shift and just starts in second? and are there any codes being set

OWENMUSTANG

iTrader: (2)

You are correct. starts in 2nd. in fact, never goes in 1st downshift or other wise.
i have'nt ran the codes yet.(is on the list to do.)

other than the 1st gear issue, trans seems to shift fine.
fluid seemed fine when i changed the soleniods..
oh, the trans has 145k on it...

performabuilt

iTrader: (25)

I would get those codes the answer is probably there , Holler at me when you have them

Black98Z28

iTrader: (8)

Im actually having the same exact problem, starts off in 2nd, even if i manually shift it to first it doesnt downshift to 1st. What is weird is last night i went for a drive and i had 1st, then i came to a stop light and no longer had 1st when i started moving again. I am thinking shift solenoid, because i had a problem with it a few months ago, seems electrical to me. No SES light though.

performabuilt

iTrader: (25)

well if you have 2-3-4 ten the two shift solenoids are working ,
you might however want to check the 3-2 solenoid since the screen in it can become restricted. And may not set a code.

OWENMUSTANG

iTrader: (2)

I'll get the codes here in a day or so. thanks

Black98Z28

iTrader: (8)

bump

I drove a few days ago all night with 1st, now it wont go into first, i havnt had time to check the solenoid, no ses light though, do you guys think it could be the solenoid?

performabuilt

iTrader: (25)

Since first is only the forward clutch and low sprag and solenoid is likley two solenoids on make first solenoid could be stuck on or off, Of note though a busted second gear accum can also cause a second gear start,

Black98Z28

iTrader: (8)

Ok, i start the car, now what it does, if i put it in Drive, she starts in 3rd gear, i have to manually put it in 2nd, then she will shift into 2nd and i can get going without more effort than needed.

If i put it in 1st it does nothing, stays in 2nd, then i go from 2nd to 3rd to over drive

performabuilt

iTrader: (25)

That sounds like limp mode , but its odd you have no codes

OWENMUSTANG

iTrader: (2)

*UPDATE*
My problem has been solved.
apparently on blazers, the trans takes power from the ignition switch. i had 12V at the fuse block/switch. when you moved the gear selector into drive, the power dropped to 3V.
a $100 part and lots of labor later, i have a fully working trans. and i never even got under the truck....Hmmmm.

performabuilt

iTrader: (25)

Ah I thought they had solved that in the later models .I remember that being and issue with early 4l60e trucks 93 94 , But good you got it fixed and it would explain the codes not being there too.