Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hi There, I'm Clayso a certified master automobile technician with 30 years of automotive repair and diagnostic experience.
From your description either there isn't enough amps to the motors or the ground has failed. At the switch verify there is battery voltage on the orange and ground on the black wires. For circuits using this many amps I use a sealed beam headlamp bulb and a couple of jumper wires setup the same as a test light. The ground for the seat switch and motors if just under the seat off from the connector.
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From what I have there are no computers in the power seat circuit. What kind of diagrams are you looking at?
The memory seat module is only for the memory. Follow was I posted earlier to verify the power and ground to the module.