TRAC OFF light Chevrolet Cavalier Z24?

Question

I've seen this question asked before, but with no direct answer and vague answers at best.
The TRAC OFF light comes on in our 2000 Z24 Cavy, which leads to hard shifting.  It comes on intermittently.  The transmission only shifts hard when the TRAC OFF light is illuminated.
ECM throws a bank 1 misfire, EVAP system leak, bank 1 running rich, and random misfire.
ABS light is not illuminated.
Vehicle did have problems with the rear left brake locking.  Does not have this problem anymore, has since 'fixed' itself.  Is there an ABS sensor on the rear drums as well, or just on the front discs?
This problem leads me to either the ABS system being bad at a sensor (but why the hard shifting?) or the shift solenoid going out (would it go out intermittently?)

Anonymous · Accepted Answer

trac off light is usually cause by bad ABS sensor but usually more lights illuminate like abs 

The locking of the rear brakes is very common happened to me my pads were cracked and grabbng acually starting to happen again because i bought the cheap-o ones but i do brakes myself so its minimal cost

Check the coil pack the white block under the 2.4 liter cover for cracks hairline fractures. Mine went yesterday $30 from the wrecker for delco plugs and setup 30 min to replace (checked the coil pack and it was cracked down the middle) No problems and 100miles later runs great no chugging no misfiring

Evap system leak check the gas cap

carnicelli · Answer

Cavalier Z24

Pete M · Answer

For a detailed explanation of what problems can be encountered with a faulty ABS sensor, read the article at the link shown below.

display name · Answer

you need more info but sounds like you need a diagnostic to see whitch wheel or what in the abs system is setting codes..

TRAC OFF light Chevrolet Cavalier Z24?

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