LS swap transmission wont shift
10-15-2017, 07:07 PM
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LS swap transmission wont shift Believe me I have searched and cannot find a similar issue to mine with a good resolution.
I swapped in a 5.3 and 4l60e out of a 2004 Buick Ranier (Trailblazer) into my 81 K5 Blazer. The trans and engine worked great in the donor car without any issues. Everything in the swap went pretty smooth but I cannot get the transmission to shift when it is in Drive. I have reverse, and forward but it feels like it is stuck in 2nd (could be 1st) gear. I have been able to get it to a higher gear by manually shifting it. I am running a 8k speed sensor off the speedo cable and the PCM was tuned for it. Any help would be great. I have a code scanner and have run codes from the PCM and there is only emissions sensor codes from things I have not hooked up yet.
Thanks
I swapped in a 5.3 and 4l60e out of a 2004 Buick Ranier (Trailblazer) into my 81 K5 Blazer. The trans and engine worked great in the donor car without any issues. Everything in the swap went pretty smooth but I cannot get the transmission to shift when it is in Drive. I have reverse, and forward but it feels like it is stuck in 2nd (could be 1st) gear. I have been able to get it to a higher gear by manually shifting it. I am running a 8k speed sensor off the speedo cable and the PCM was tuned for it. Any help would be great. I have a code scanner and have run codes from the PCM and there is only emissions sensor codes from things I have not hooked up yet.
Thanks
