p0758 and p1860 codes
02-10-2007, 12:22 AM
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p0758 and p1860 codes I have a LQ9 engine and 4L80E transmission. I installed these in a 78 trans am. These codes are coming up when I scan the pcm. I see that the p0758 code is the shift solenoid and the p1860 is the TCC solenoid. What are the steps for troubleshooting these codes?
02-10-2007, 02:03 PM
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Thanks! The engine and pcm are from a 2002 Cadillac Escalade. The trans is from a 04 2wd silverado. I had the pcm programmed for the 4L80E. I checked the wires again this morning. I switched the correct wires in the round plug.
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02-19-2007, 10:46 AM
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I found the problem this weekend. When the 2 pins were switched in the harness to go from a 4L60E to 4L80E trans, the T and U pins weren't removed. I should have checked the harness closer.
