While DTC signal trouble, they do give you a good deal of information on your problem-solving journey.

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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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In our last blog post we talked about how the solenoid, hydraulic interaction achieves a specific gear and diagnostic tips. We also started off with how the pump is the heartbeat of the transmission. Look inside to read the continuation of this post and its valuable contents inside.

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How solenoid, hydraulic interaction achieves a specific gear and diagnostic tips - inside this article!

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A new spacer plate is available for the 6L80 series transmission due to an 8th ball being added to the upper valve body. This ball is in what GM designates as the CBR1 hydraulic circuit.

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