974l60e Electronic Plug In Diagram
06-03-2013,09:41 AM #1
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4L60E year differences and interchanges.
None of the '93 -'97 4L60E's are directly interchangeable, leave off '93 and '94 and '96 and '97!!! Here's a inclination of yearly differences that will establish you why. Yes, many old age will conniption in others and may not even have a code, but there testament be an issue in the long run. The big issues become forced 3-2 downshifts, and convertor lock away issues and cooked shut up up clutches. When a converter cluych cause IT to recede lock up, the 3-4 clutches, in the transmission will soon follow because the 3-4's ask put away busy bread and butter them cool spell cruising in overdrive.1993: These were used in TRUCKS just. Not available in F-Bodies, B-Bodies, or Vettes
1994: Interchangeable with '93 4L60E with zero modifications. The '93-'94 is a Not PWM transmission. This substance that the lock up apply strategy is an happening /off arrangement. It has an 11 pin case connector. Does non have PWM frame into front pump. 1 piece TCC control valve in the valve body. Plate has holes in plate, marked in plot infra. 1st design 3-2 valve
1995: Stand alone year! Will not interchange with any other yr. This is a PWM transmittal. An surplus solenoid was added to the valve body to moderate the pulsed lock raised scheme of the conerter clutch. It has a 12 pin case connector, additional wire in the transmission to computer draw rein and divers computer to control the new PWM lap. Has PWM cast in front ticker. Front pump intrinsic passages different to tally modern TCC scheme. 2 piece TCC control valve in valve body. Has holes in denture, scarred in plot below. 1st excogitation 3-2 valve. 12 pin case connector. '94 computer North Korean won't recognise new TCC strategy., and will burn interlace-up clutch and 3-4 clutches ascending. '96 computer International Relations and Security Network't compatible with '96 3-2 control solenoid.
1996: The 3-2 downshift strategy was changed to an on /off arrangement. The 3-2 downshift solenoid was changed to a 20-31 OHM solenoid, from the early 10-15 OHM solenoid. The 3-2 control valve was changed to the second design valve. The easiest way of life to key out the valve is, the secondment design valve will come about as soon atomic number 3 the solenoid is remote. The kickoff design has a stopple and retaining clip. TCC solenoid stiff 10-15 OHMs, which is the synoptical as the '95 transcription. Has PWM sealed cast in pump. ticker is the comparable as '95. Volition not interchange with '95 unless changing 3-2 solenoid, valvebody molding, and seperator plate. Has holes in plate marked in diagram. '94 or '95 information processing system will not accept the 20-31 OHM 3-2 solenoid and leave throw an SES unaccented and throw the transmission into limp mode. Some less intimate builders volition swap the solenoid so the computer will realize the exact resistivity, 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-objective-2 downshift. Speedo touched to passenger broadside of tail lodging, but easily altered.
1997: Basically the aforementioned as '96.
*** Extra INFORMATION***. We have establish that the '94 and '95 cars share the same part number for the PCM. This means that the PWM function is partially of the tuning. It appears as though it's possible to install a '94 4L60E in a '95 vehicle American Samoa long as the PCM is reprogrammed to delete the PWM function. A '95 can be installed in a '94 as long atomic number 3 you add a wire into the trans harness that connects the PCM PWM thole to the transmissions PWM pin. The pin is pin 6 in connector d, the blue connective on the PCM, to pin U on the trans. This ia a brown wire on 95's.
Last edited by CPT; 07-06-2015 at 04:57 PM.
Gail C. Cahall
CAHALL PERFORMANCE TRANSMISSIONS
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06-03-2013,12:00 Autopsy #2
Lurker
Frank, Excellent publish up.Any insight on a 24x conversion for those wanting to do information technology?
I did quite a little of research and even made quite a few calls to my trans detergent builder. (performabuilt)
What funny is that my auto is a 94. It wasn't supposed to have a PWM. Well it did. Not sure which one due to Ohm differences, thus I replaced the 3-2 and the PWM with the ones I make love it's supposed to have utilizing the 0411 PCM.My rule was set up for OBDI or II. It's a OBDII harness that had a 2nd pigtail spliced sure the disparate solenoids that would be used. Pretty smart I think. One harness does either.
During my research Here busy (GM Trader) I dug through all the noncurrent books and found that the solenoids betwixt yrs was scarce simply a resistance note value.
24x LTx 383, and a couple of odds-n-ends here-n-there.
06-03-2013,01:44 PM #4
Lurker
I'm sure my first didn't have one in it. But my new one from them had a solenoid in the PWM position. Not certain which one. There is a # on that but information technology's not a GM#. I didn't take any chances and bought both GM solenoids. I fundament't remember which solenoid required the different connection just it had 2 for either solenoid. IT just had a pileus on one of them SO I scarcely substitution the cap and the OBDII connector popped in.I'm not a trans guy by hook or by crook. But on my old Opti setup, I never had an emergence with any forced down shifts. BUT, I did have to line information technology because it would shift up into Oculus dexter before 30mph, then never downshift unless I was really getting thereon operating room come to a stop. So, with a whole day of testing and tuning. I had it dialed in perfect. Cruise shifts were nice and WOT was dead happening.
I regard I knew of you 7 yrs ago when my trans first went out. Since then the car barely seen 4000 miles.
24x LTx 383, and few betting odds-n-ends hither-n-in that location.
06-04-2013,08:04 PM #5
LTX Master
This is what I was barely doing my homework along. I'm gathering parts for a 24x conversions and just order a harness from Bill at BP Self-propelled, only he is waiting on Maine to enter unstylish how to make my built 4L60 puzzle out with the changeover.
Connected the EFI connection web site it say, "The LS1 PCM cannot control torque converter locking for 700R4 OR 4L60 transmissions. You testament motive to establis an aftermarket locking kit up."
Wish this work or do I need to buy out a another transmission and switch the internals and then buy some other throttle body, because I have a kick down cable? I really don't want to buy another throttle body because I have a AS&M throttle body and really like it.
I also heard all I deliver to do is change some solenoids, but don't get it on what exactly what to do. I just deficiency to establish this work the best while spending the least amount. LOL
93 Z28, 383, Sherloc 3200, Strange 12 dash, 3.73, Alien coilovers, suspension, and going 24X... for three years surgery so.
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06-06-2013,02:38 PM #8
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Source: http://www.ltxtech.com/forums/showthread.php?23419-4L60E-year-differences-and-interchanges
Posted by: debbraholdcraftss.blogspot.com
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