It should throw a code if it is bad. Could it be the engine it misfiring causing the sensation the transmission is slipping, this is a common problem.
I don't think an ABS light will cause it to shutter. BTW check the brake fluid level if it is low you may have a leak or you need to replace the brakes.
Please let us know
Cheers, Ken
Thursday, September 7th, 2017 AT 11:21 AM