sonyman87 Posted August 16, 2005 Report Share Posted August 16, 2005 any ideas. will it just bolt up and plug in? Quote Link to comment Share on other sites More sharing options...
gp90se Posted August 16, 2005 Report Share Posted August 16, 2005 I think when I was looking at transmissions options I read your gunna need to change some of the connections on the transmission plug and a custom chip will be needed with an LQ1, keep us/me updated though. Quote Link to comment Share on other sites More sharing options...
GnatGoSplat Posted August 17, 2005 Report Share Posted August 17, 2005 No, you'd need a new PCM. 4T65-E doesn't have a vacuum modulator, it's electric on the 65-E. Quote Link to comment Share on other sites More sharing options...
JoroCorona Posted August 17, 2005 Report Share Posted August 17, 2005 doesn't the 4t60e use an electronic shift modulator too? Quote Link to comment Share on other sites More sharing options...
GnatGoSplat Posted August 17, 2005 Report Share Posted August 17, 2005 Nope. 4T60-E uses a vacuum modulator, but electronic shift solenoids. It's kind of a hybrid vacuum/electric tranny. Quote Link to comment Share on other sites More sharing options...
gp90se Posted August 17, 2005 Report Share Posted August 17, 2005 right, and because of that, isnt the information the chip use different commands to control the 65-e vs the 60-e? Â school me man, school me Quote Link to comment Share on other sites More sharing options...
GnatGoSplat Posted August 17, 2005 Report Share Posted August 17, 2005 Indeed, a 65-E simply can't be put in place of a 60-E. The existing chip doesn't have commands at all to control fluid pressure. The existing PCM doesn't have the wiring for it either. Without swapping the harness and PCM, it's just not going to happen. Â I had an idea involving building a circuit that taps into the MAP sensor and generates a PWM output to drive a 65-E... basically it would be an "electronic modulator valve". I'm not sure if this idea would work, but I don't see why not. Quote Link to comment Share on other sites More sharing options...
manitcor Posted August 17, 2005 Report Share Posted August 17, 2005 since you have the LQ1 it should not be too hard, you can get a PCM from a 97 MC LS which had the LQ1 and the t65. Â You may need the wiring harness from that year as well, but im not sure, youll need to compare your year to the later year. Â Is your lumina a 95 or 96? Quote Link to comment Share on other sites More sharing options...
maybe2fast Posted August 17, 2005 Report Share Posted August 17, 2005 I had an idea involving building a circuit that taps into the MAP sensor and generates a PWM output to drive a 65-E... basically it would be an "electronic modulator valve". I'm not sure if this idea would work, but I don't see why not. Â would the MAP sensor give the trans the correct readings? I mean the are the signals the MAP sensor puts out the same as the signals needed to drive the trans? The theory of the MAP sensor signal for a vacuum reading for the trans is very clever. Shawn do you sit at work and just think this shit up? Quote Link to comment Share on other sites More sharing options...
GnatGoSplat Posted August 17, 2005 Report Share Posted August 17, 2005 would the MAP sensor give the trans the correct readings? I mean the are the signals the MAP sensor puts out the same as the signals needed to drive the trans? The theory of the MAP sensor signal for a vacuum reading for the trans is very clever. Shawn do you sit at work and just think this shit up? Â Nope, the MAP has an analog output that varies from 0V to 5V (or something like that). The tranny needs a PWM (Pulse Width Modulated) signal to control the fluid pressures. What would be needed is a microcontroller with an Analog-to-Digital converter. It would be programmed to convert the variable input into the appropriate pulse width. The hardest part would be programming the microcontroller. The parts are pretty cheap, and the hardware would be very simple. Â Yeah, I do think this shit up at work. Quote Link to comment Share on other sites More sharing options...
sonyman87 Posted August 18, 2005 Author Report Share Posted August 18, 2005 95 Quote Link to comment Share on other sites More sharing options...
manitcor Posted August 18, 2005 Report Share Posted August 18, 2005 95 Â youll prob need to swap your harness too if you go the PCM route, gnats idea sounds easier as far as not having to pull everything out. if it can be made to work. Quote Link to comment Share on other sites More sharing options...
maybe2fast Posted August 19, 2005 Report Share Posted August 19, 2005 sounds very do-able and if you did succeed you could market this little beauty Quote Link to comment Share on other sites More sharing options...
wolfebrian2120 Posted May 17, 2013 Report Share Posted May 17, 2013 I have a 95 monte z34 LQ1 OBDI. would the PCM from a 96 or 97 work with the existing electronics and then give me the option for the 4t65? if it is as simple as replacing the PCM and wiring harness than i would be game for the swap. I'm mostly worried if the new PCM would be compatible. Quote Link to comment Share on other sites More sharing options...
Nas Escobar Posted May 17, 2013 Report Share Posted May 17, 2013 I think the engine would give you issues with the PCM because 96-97 LQ1's were modified to be ODB2 compliant.... or so I think. I know they modified the engine to be interference, and changed the UIM. Quote Link to comment Share on other sites More sharing options...
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