Third party security systems in immobilizer cars are a bad idea. Removing it has to be done carefully, too.

It does sound like massive CEM or DDM issues , xmedox are probably your best bet here. Expect about $1000 budget to start and hopefully not too much more by end

no, not buying that diagnosys. ABS faults can limit gear shifting in the transmission. I would take it to a volvo specialist indy. The trans shifts good when the other faults are cleared, that tells you its not the trans. ABS fault will disable cruise control and send shift limit command to trans, b...