Driving a 2014 Impala LTZ (new style) 3.6 engine. Problem started awhile back with just an occasional service side detection system. Took to dealership in 2015 car had 400+ codes stored in it. GM tech called Tech assistance and was told it was a connector issue and to put di-electric grease in various connectors. Problem stopped for 2 weeks. Now this problem has expanded to a steady flow of messages while driving basically displaying service system messages for every system in the car. Side detection, front camera, airbag etc. These message pop up every couple minutes and somtime shut down guages speedo a/c etc. but to not affect the engine running.

Can anyone shed some light on this? Certainly not likely all these systems are broken.

Thanks