2014 Silverado LTZ electrically falling apart

[awallburg]

Good Day, 

Desperate to find some help here. 

 

2014 Silverado 120k Miles, 6" lift and 35" tires bought from very large lifted truck dealer in Arizona in 2018, It does NOT have trailer braking however an aftermark trailer brake is installed. 

 

NOTE: I have not yet replaced the battery which is 6 years old

 

a Few days after purchasing I started getting stabilitrac warnings on bumps, dealer replaced wheel speed sensors claimed it was good to go. 6 months later it started happening again, I replaced them again myself and within weeks the problem returned... Since this last winter my truck is electrically falling apart the ABS started firing when it should not, even at low speeds, I had to pull the ABS fuse/relay just to safely drive, then the parking sensors started throwing a service system warning and now don't work at all, the 4 x4 warns it needs service but still works fine, and now the final issue that is making me lose my mind is the parking/e brake warning light dings almost constantly, even at high speeds though it does it less, the parking brake is NOT engaged..  In addition the brake warning is followed by the "steering assist reduced drive with care message". though I cant notice an issue with power steering.. 

 

Any feedback is appreciated I am losing my mind, I will be replacing battery by this seems a little much for just battery, I have read about the ground issue could that be it? Bad BCM, or ECM?

[PhilB]

If the battery is 6 yo, then that would be my first guess.  You could have a cell going bad in the battery.  You can check the battery cables also as they could have corrosion inside the insulation and causing voltage drops.  I would try a new battery and possibly new cables.

 

With all of the computerized things on these trucks, a slight change in the voltage could trigger many different symptoms from the computer.  

[JimCost2014]

X2 on the battery. Clean new power, happy truck in most cases.

[mikeyk101]

Like the others mentioned, new battery is a must at 6 years. Replacing the battery cables is an excellent suggestion too. And definitely inspect the G218 ground on driver's side dash along with checking and cleaning the other grounds especially the one in rear of passenger side front wheel well.