Only one on the TCM. The 2 blue/gray on the BCM are usually the culprits. Also sometimes the wiring harness will rub and wear through close to the thermostat housing. Check if plastic armor is intact.
I have a cobalt 05 with code p0700 and P1516, I purchased TCM replacement, but car still hard shift from gear 1 to 2 only this happen every morning and when car parked for hours need help please
Does your code often reappear therefore trigger the CEL on 2nd appearance or is it infrequent? How does the car actually behave? There is one thread that explains it: 68121-my-car-jerks-hard-when-shifting.html and the one I posted: 101948-hard-shifting-no-iss-start-no-codes.html.
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