Check-engine light came on. The mechanic read the code. The code says that the gear does not shift to the highest. The mechanic said
- rpm will go up by 500 when gear does not shift; lose some mpg
- I wont notice the failure to shift
- just drive as if nothing happened
Do you think the aboves are correct assessment?

Thanks!
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Took to trans specialist. They tried really hard to duplicate the problem. Could not. Checked electrical of the tranny box - no problem. They said trans slip can happen all the time (uphill, downhill, sudden change in torque), and suspected that I might have been a peculiar driving condition.

 

what was the code exactly ??? when is the last time you changed the AT fluid ???