OBD1 4L60E Scanning?

[2s9je0af]

I have tunerpro but I don't see a way to read anything other than P,Drive. Is there software that can get at the transmission codes/live data for a 1994 w 4L60E? I can't seem to get 2nd gear (slow or not at all). If I directly shift into 2nd I can get into 2nd immediately. I don't think I have 3rd or 4th.

 

[NickTransmissions]

I have tunerpro but I don't see a way to read anything other than P,Drive. Is there software that can get at the transmission codes/live data for a 1994 w 4L60E? I can't seem to get 2nd gear (slow or not at all). If I directly shift into 2nd I can get into 2nd immediately. I don't think I have 3rd or 4th.

Unplug the case connector, fire it up and put it in drive. You will be in third gear. If it moves forward, trans 3-4 pack is likely viable. If it doesnt move at all, trans has to come out for overhaul.

Check Snap On scanners as I think they are capable (with the applicable obd1 adaptor connector), of rendering live OBD1 trans and engine data. Same with a TECH1 or TECH2, I believe.

For second, check servo travel - should be between .050-0.090. If its within that range. Drop pan and air check servo (you'll have to remove valve body to air check the second gear servo piston).

 

[PlayingWithTBI]

I have tunerpro but I don't see a way to read anything other than P,Drive.

What PCM do you have and, did you match the correct .xdf mask to it?
Like, a 7427 uses "Advanced A217 $0D TP5 v251.xdf" file, etc.

www.gearhead-efi.com/Fuel-Injection/forumdisplay.php?20-GM-ECM-Bins-TunerPro-Definition-Files-Wiring-Diagrams-Tuner-Info

GM ECM - Bins - TunerPro Definition Files - Wiring Diagrams - Tuner Info!

Each thread is by ECM number with Bins, definition files, wiring diagrams history and tuner information!

gearhead-efi.com

 

[2s9je0af]

Perhaps not... I had that laptop set up for my 93' suburban. Since it was working on the 94' I didn't mess with it. I think 93' might have been different as the 1st year of the 4L60E in GMT400s.

 

[Trlrider]

I have tunerpro but I don't see a way to read anything other than P,Drive. Is there software that can get at the transmission codes/live data for a 1994 w 4L60E? I can't seem to get 2nd gear (slow or not at all). If I directly shift into 2nd I can get into 2nd immediately. I don't think I have 3rd or 4th.

There are really no transmission codes available on the '93/'94 transmissions. The OBD1 system is just not that advanced and there are only a couple of transmission parameters you can mess with. I have not opened the file on my Burb for at least a year, so I do not even remember what those parameters where.