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Q:

abs brake on 2002 Pontiac Montana

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
abs brake light comes on and says service brakes. Rotors are new and also pads. Is intermitant but may be driving and not using brake but light and service brake comes on.
(2) Answers
when this light comes on, it has nothing to do with pads and rotors. it is a saftey system that is built into the brakes that stop them from locking up on panic stops.
a shop with a scan tool is needed to pull the code, check the failure and give you a bid for repair.

Roy
Is sounds like a problem in the ABS system. Dosen't matter if your brakes are new or not. A shop needs to perform a diagnostic scan to determine the issues with the ABS system and why the warnings are coming up.