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Re: Yet another GMC build
Got about 200 miles before trouble. Slipped in 1st gear once, temps started climbing, then it started shaking, then the converter started grinding. That was all in a 3 mile trip. Wasn’t even getting on it. Snout on the converter chewed up, front seal came out in pieces, front pump loose. Tranny shop said since I pulled it all out of a truck hit HARD in the front, it probably allowed the converter to smack the pump and crack it. He quoted $1500 to rebuild. Looks like I get to learn how to rebuild a 4L80E!
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