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Re: 86 scottsdale sm465 tranny noise
my 81 C30 does THE EXACT SAME THING finaly im not the only one, i have the same transmission and whenever i let the fuel off no matther in witch gear (noise increase depending in what gear its in). i suspect internal tranny bearings are shot it has 225 000+km and there are no synchros left what so ever gotta match rev or it wont shift at all. i gave up on finding where its from i drove it a full year like that and now it became a donor truck
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