2000 CADILLAC SEVILLE, 4T80-E

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none known

no codes

Original Customer Complaint:
noise while driving after it warms up.
Current Customer Complaint:
buzz/growl noise after it runs for a couple minutes, coming out of valve body cover area as it shifts into 3rd, can also make noise happen turning up pressure with scanner while in 3rd gear. trans is quiet under heavy throttle shifts and forced downshifts, only noisy under light to moderate throttle.
Work Completed This Visit:
inspected transaxle and replaced burnt 2nd clutches/steels, worn bushings, pressure control solenoid, seals, gaskets filters and torque converter. pulled trans and changed pump, no change in noise.
Summary:
no