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4l60e issue

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Old Mar 10, 2023 | 08:35 PM
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Default 4l60e issue

I'm looking for help on my transmission issue. I have a 4.8l and 4l60e from a 2000 chev 1500 2wd swapped into a 1986 s10 blazer 2wd. The transmission will go into drive but it won't shift thru the gears automatically. Manually I can shift thru 1,2 and 3 as well as reverse. But it won't automatically shift and slips above 2000 revs when in drive. I've taken it to a transmission shop and they said the transmission itself was all clear and that I have a wiring problem. When using an older snap on code reader on the obd2 I can see the VSS and TPS reading clearly. I can also see the solenoids clicking on and off. Any ideas on how to fix this would be much appreciated.
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Old Mar 14, 2023 | 03:35 PM
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If you are seeing the solenoids actuating the wiring and electronics should be good, right?

Last edited by jetech; Mar 19, 2023 at 02:26 PM. Reason: clarification
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Old Mar 14, 2023 | 11:50 PM
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Originally Posted by Hhb02
I'm looking for help on my transmission issue. I have a 4.8l and 4l60e from a 2000 chev 1500 2wd swapped into a 1986 s10 blazer 2wd. The transmission will go into drive but it won't shift thru the gears automatically. Manually I can shift thru 1,2 and 3 as well as reverse. But it won't automatically shift and slips above 2000 revs when in drive. I've taken it to a transmission shop and they said the transmission itself was all clear and that I have a wiring problem. When using an older snap on code reader on the obd2 I can see the VSS and TPS reading clearly. I can also see the solenoids clicking on and off. Any ideas on how to fix this would be much appreciated.
You didn't say how many miles are on this used transmission. If you haven't yet, you should install a gauge and check line pressure.
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Old Mar 18, 2023 | 05:36 PM
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Did you also install the pcm and wiring from the 2000 to the 1986? don't see how anything would work electronically unless you did.
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