GM’s 6L40/50/80 series rear wheel drive transmissions referred to as GM6 may come in to the shop experiencing a complaint of a delayed reverse accompanied with a slipping reverse as well as a flare or slide 2-3 shift. 

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1 Comments | Posted in ATSG Tech Tips By ATSG

ATSG frequently receive calls from rebuilders who find the reverse clutch spring retainer snap ring popped out of its groove with RE5R05A transmissions causing reverse clutch failure (figure 1). This is due to several reasons; the snap ring groove in the case is shallow, the snap ring is thin and the spring return is quite stout (figure 2). 

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2 Comments | Posted in ATSG Tech Tips By ATSG

After rebuilding a ZF6HP26 transmission, it is frustrating to say the least when you discover harsh, bumpy or clunky type shifts on a road test.

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2 Comments | Posted in ATSG Tech Tips By ATSG