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1984 gmc c1500 classic
I have a 1984 gmc Sierra c1500 with a 1972 5.7l engine and th350 auto transmission. I was having issues in 2nd gear so I decided to replace the trans filter and on the bottom of the pan was grey greasy sludge I was wondering what it might be from? I haven't tried driving since changing just in...- Davski3271
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