ls2 4l70 swap wont shift & no speed
06-01-2012, 07:47 AM
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ls2 4l70 swap wont shift & no speed 
hi guys im new here so here goes. i swap a 06 sstb 6.0 4l70 into 67 c10 had harness an computer reworked by ssp wiring. no major problems wit swap. now heres were it all goes bad
got truck running but tranny wont shift out of first and dash not reading speed at all 
please help thanks 
06-01-2012, 09:58 AM
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yea thats what i was thinking. ive been trying to get techs at ssp wiring to send me a trans pinout but of course their to busy
dose anyone hav pinout for trans.
dose anyone hav pinout for trans.
06-01-2012, 10:54 AM
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Sounds like the engine and trans computers are not communicating. I don't think you need the pinouts for the transmission, I'd look more at the wires connecting the TCU to the ECU.
06-01-2012, 11:31 AM
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06-01-2012, 12:05 PM
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No, I am saying the wiring that connects the trans controller to the engine controller.
I think it is something like 2 or 3 wires between them. But if the engine and trans computers are not communicating, then the trans doesn't know what the engine RPM or TPS is, and will stay in 1st gear. The ECM won't know what the vehicle speed is, so you will not show anything on a speedo.
I forgot to show you this:
http://www.google.com/search?client=...UTF-8&oe=UTF-8
I think it is something like 2 or 3 wires between them. But if the engine and trans computers are not communicating, then the trans doesn't know what the engine RPM or TPS is, and will stay in 1st gear. The ECM won't know what the vehicle speed is, so you will not show anything on a speedo.
I forgot to show you this:
http://www.google.com/search?client=...UTF-8&oe=UTF-8
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06-01-2012, 09:58 PM
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check the VSS. I botched my install and the trans wouldn't shift. Removed the VSS and reinstalled it making sure it was seated all the way and viola, the trans shifted. I also had no speedo either until the VSS started working.
06-03-2012, 12:18 PM
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looks like i may had my harness reworked by the wrong business. i read the thread and i've had some of the same problems from them. they told me it would take 5 day for me to get my order and it took like 4weeks and on top of that harness had no locks that hold wires in the connecters took like 2weeks for them to figure that out then they took a nother week to send locks to me now trans is still not working so i guess i got screwed to. so now i dnt want to send it back b/c they will jus screw me more its been 2months already
06-03-2012, 12:52 PM
#11
Sorry to hear of the bad luck. Cut your losses with SSP wiring. Figure it out yourself or pay some reputable shop to fix it. JMO
06-03-2012, 02:10 PM
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looks like i may had my harness reworked by the wrong business. i read the thread and i've had some of the same problems from them. they told me it would take 5 day for me to get my order and it took like 4weeks and on top of that harness had no locks that hold wires in the connecters took like 2weeks for them to figure that out then they took a nother week to send locks to me now trans is still not working so i guess i got screwed to. so now i dnt want to send it back b/c they will jus screw me more its been 2months already
