3l80 transmission cooling problem maybe cavitating ?
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3l80 transmission cooling problem maybe cavitating ?
Hi guys my transmission started to fail over the winter in my m998 so I had it rebuilt by GM Automatics Ltd in London U.K. I have only driven the truck about 40 miles since rebuild, mostly 2 miles at a time . Last week I drove it however for about 10 miles and now the transmission fluid smells totally cooked. You can smell that things are not right from about 15ft from the truck! The trans runs great and shifts fine but the in/out cooling lines and radiator are cool when the trans is hot. I'm guessing that either the trans pump is not pumping or there may be cavitating /airlock issues. Is there a way to test the cooling system flow and figure if its doing what it should ? Ive done a search on the forums but this seems an unusual hitch. I figure that another dead transmission and transfer case are next
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Maybe the cooler in the T-Case is broken and there is no regular fluid flow.
Try to fit a clear cooler line in one of the two cooler lines. And over bridge the T-Case but don't drive in HL or other range just in H while the t-case cooler is out of the circuit.
If the transmission oil pump wouldn't work your transmission wouldn't work…
Further check the transmission fluid! If it's dark red and smells and TASTES burned change it! and also change the filter. I hope it's not to late…
Try to fit a clear cooler line in one of the two cooler lines. And over bridge the T-Case but don't drive in HL or other range just in H while the t-case cooler is out of the circuit.
If the transmission oil pump wouldn't work your transmission wouldn't work…
Further check the transmission fluid! If it's dark red and smells and TASTES burned change it! and also change the filter. I hope it's not to late…
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