4l60e trans problems

[DETROITMUSCLE]

I believe the trans wiring internally is different, 93-94 and same 95 is unique to itself and 96-97 are the same. I'm not 100% but I think this is similar to somebody elses problem.

[JoeliusZ28]

I have the car on jack stands,while I have the car in gear(od)giving it gas rpms are 2500 and speedometer is at 50,it dont shift into od..just reves up.I think I am missing the plug that goes on the brake switch which controls the lockup.It would make sense,thats why code 84 keeps coming up on the scanner.I have to find that 2 wire connector..

if it just "revs up" in overdrive, you probably have your 3-4 apply piston in the servo installed backwards.

[my1994z28]

I know forsure I am missing the connector that plugs into the brake switch for the lock up...The servo???Not againcode 84 is output driver module...does that have anything to do with having the 3-4 piston in back asswards??

[JoeliusZ28]

no idea if that code would mean that or not. thats an easy fix though if thats the case.

[ThreeHonks]

not having a brake switch hooked up wont prevent lockup, you just wont be able to unlock the converter when you hit the brakes. That is not giving you a code.

If you dont have OD, then it is proably the servo issue or a slipping 3-4 clutch pack.

Everytime my car fries the 3-4 pack i can never get overdrive, the reason is, because the PCM will never see enough REAL speed to make the shift into OD.

and yes, if your wiring is jacked up your trans will be fubar in no time

[Fbomb]

So Ryan did you ever figure out why your trans is burning up the 3-4 pack? I think my dad's Z did the same thing because he said it downshifted into 3rd one day and just hit the limiter, then he didn't have 3rd anymore.

[my1994z28]

I just rechecked all the wiring and it is all correct,someone mentioned that it could be a servo problem?that is next on the list to check.If anyone is bored tonite and they feel like helping solve the problem,I will buy the beer and pizza...any help is appreciated.

[meissen]

Right click the image and select to view image in new window or whatever the closest wording is in your browser you use. These images are huge and get downsized automatically. Full size is *REALLY* easy to read.

[Swat]

Do you not have 4th at all, or do you not have lock up? In the engine bay, fuse "engine sensors", if this is bad, you will not have lock up.

[my1994z28]

I dont have a engine sensor fuse..my car is a 94 1le..no air,power windows or locks.

[my1994z28]

I removed the valve body last nite and cleaned everything up and checked the wiring again.Went out today and started it up on jack stands and it is now shifting .now I just have to figure out the wiring for the lock up.its a 2 wire hook up,does anyone know the wires I wouold use?Remember my car was a m6,I have the plug for it,the wires are pink and blue.

[my1994z28]

Thanks Brian for the info,it helped a great deal.

[JoeliusZ28]

good to hear! sorry cant help you on the wires.

[my1994z28]

Got it all figured out,if the weather is nice tomorrow,I am taking it for a ride..