1997 4l60e 4wd transmission. slight damage

fatstax · COBOURG, ONT

1997 4l60e 4wd transmission. slight damage

GhostPost · ONTARIO

Someone on here was looking for one

poncho62 · ADMINISTRATOR

I think they were looking for a 95.....96-97 are different, something about the electronics.

2 or 4 wheel drive?

slim · DUNDAS, ONT

Someone on here was looking for one

this one 93 to 97 should be the same rebuild kit is the same anyway.

fatstax · COBOURG, ONT

i was hoping for that as i could have had a rebuilt 94 tranny for cheap but i was told that it had to be a 96 or 97 trans so thats what i went with

slim · DUNDAS, ONT

I was just going by the rebuild kit but it looks like between 96 to 98 they phased in the 4 to 6 bolt tail shaft with the latter model having the removable bell housing . Anything with 4 wd will have to match the tail stock bolt pattern since the are coupled together to the transfer case

http://monstertransmission.com/4L60E-Transmission-Rebuild-Kit-Mega-Monster-In-A-Box-1993-97_p_5087.html

fatstax · COBOURG, ONT

so you are saying the bolt pattern on the transmission changed to six bolts during that time? i was told there was differences in the connections and computer stuff.

slim · DUNDAS, ONT

As far as I know the gear ratio's never changed 97 or 98 would have to be OBD11 compliant so they renamed solenoid 1 and 2 you would still require the same firing order for the coils to shift through all 4 speeds so the only real thing the ecm can change is the shift points . As I said the big deal would be getting the tail shaft to match the transfer case because they will no longer bolt together depending on when that model was upgraded to the new housing .If the one in your truck was the new 3 pc housing the 94 would never bolt up.

fatstax · COBOURG, ONT

the trans in the 97 is the one piece so im sure they are compatible in that sense but the differnces i think are in the neutral switch, the 94 doesnt have it in the same place the 97 does, so the shift shaft is longer as well since it goes thru the neutral switch on the 97, this may be the difference.

slim · DUNDAS, ONT

Ok finally found some one that posted the exact differences

Default Stickied: Lets walk through the differences between '94,'95,'96 and'97 4L60E's

None of the '93 -'97 4L60E's are directly interchangeable, except '93 and '94!!! Here's a list of yearly differences that will show you why. Yes, some years will fit in others and may not even throw a code, but there will be an issue in the long run. The big issues become forced 3-2 downshifts, and converter lock up issues and burnt lock up clutches. When a converter cluych cause it to lose lock up, the 3-4 clutches, in the transmission will soon follow because the 3-4's need lock up to keep them cool while cruising in overdrive.

1993: These were used in trucks

only. Not available in F-Bodies, B-Bodies, or Vettes

1994: Interchangeable with '93 4L60E with no modifications. The '93-'94 is a NON PWM transmission. This means that the lock up apply strategy is an on /off arrangement. It has an 11 pin case connector. Does not have PWM cast into front pump. 1 piece TCC control valve in the valve body. Plate has holes in plate, marked in diagram below. 1st design 3-2 valve

1995: Stand alone year! Will not interchange with any other year. This is a PWM transmission. An extra solenoid was added to the valve body to control the pulsed lock up strategy of the conerter clutch. It has a 12 pin case connector, extra wire in the transmission to computer harness and different computer to control the new PWM circuit. Has PWM cast in front pump. Front pump internal passages different to match new TCC strategy. 2 piece TCC control valve in valve body. Has holes in plate, marked in diagram below. 1st design 3-2 valve. 12 pin case connector. '94 computer won't recognise new TCC strategy., and will burn lock-up clutch and 3-4 clutches up. '96 computer isn't compatible with '96 3-2 control solenoid.

1996: The 3-2 downshift strategy was changed to an on /off arrangement. The TCC control solenoidwas changed to a 20-31 OHM solenoid, from the previous 10-15 OHM solenoid. The 3-2 control valve was changed to the second design valve. The easiest way to identify the valve is, the second designvalve will fall out as soon as the solenoid is removed. The first design has a plug and retaining clip.TCC solenoid remains 10-15 OHMs, which is the same as the '95 arrangement. Has PWM stamped cast in pump. pump is the same as '95. Will not interchange with '95 unless changing 3-2 solenoid, valvebody casting, and seperator plate. Has holes in plate marked in diagram. '94 or '95 computer will not accept the 20-31 OHM 3-2 solenoid and will throw an SES light and throw the transmission into limp mode. Some less knowledgeable builders will swap the solenoid so the computer will see the correct resistance, but the valve itself then causes downshift issues. If only the solenoid is changed, it will result in a 3-2 downshift cut loose. In other words...3-neutral-2 downshift. Speedo moved to passenger side of tail housing, but easily changed.

1997: Basically the same as '96

IN the rebuild kit they have replaced all of the above to work together with the program to make it work . Holy crap you would think Henry ford built this thing and did the r&d on the customers back. By looking at it I would think it would be worth your time to Just upgrade with a rebuild kit because GM dropped the ball on this one in the early years of production.