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[wtknght1]

Originally Posted by 99cobra

No offense taken, but I would have expected the ABS to kick in, as you also stated. I am running Cobalts as i always'have. The new calipers could be more effective, that is why i am wondering about bias

Normally I don't change rear calipers by themselves or one side of the car by itself. I will use new front calipers with old rear ones because I like really, really good front braking power to rotate the car, so my first recommendation is to do what's been mentioned already:

1. Ensure you are braking properly!
2. Change pads and bed in good
3. Replace front calipers to new as well.

If that still doesn't fix it, you may have some bad rear calipers, but I've never seen any that were bad. Just remember to change one thing at a time so you'll know for sure what caused it. Good luck!