3-Hour Battery change

[petethepug]

You’ve been offered sage advice on swapping out -/+ battery cables as something that should have been done @ years at year 10.

Your CanBus operates on 5v. Any resistance in the arteries from the heart will trigger a gremlin, waste your time and peak your frustration. Start with new wires because you should spend time with bride, not chasing false codes.

 

[KC 2013 Tahoe]

As a purely preventative measure will go ahead and look into getting some new ones.
Hard to argue with your logic.

I assume this large positive cable with inline fuse is the primary culprit. There's also another that goes from it to the alternator for charging, plus the negative post to engine block cable. Are all of these problem prone, or mainly the pictured one?

Appreciate the advice!

 

[petethepug]

It could be. The load, engine bay heat, jump starts and using every single electrically driven component in a storm at night overdraws the rated load on the cables.

That causes oxidation to accumulate internally. From that point it’s like a kink in a hose. One minute it’s fine, go over a bump, get a free random DTC. The gremlins get worse in cold weather.

The same issue occurs to owners who purchase the cheap, made overseas replacement z55/z95 Auto / MagRide struts.

They’ll blame the truck for all the issues they create and forgot the OEM struts took the truck close to 100k without issues.

 

[swathdiver]

Connecting the positive cable last instead of the negative cable can short out modules. When a car is first started after a battery change, it's best to drive it around for a bit to allow the computers to adjust from being cut off and for the battery to become fully charged.

My wife jumped our truck with some ratty cables from a passerby and shorted out the RR wheel speed sensor somehow. The RCDLR has been acting wonky ever since as well, hope I don't have to change that out but do have spares and ability to program if needs be.

My lesson, I knew the battery was nearing end of life and kept kicking the can down the road, trying to get to 48 months. It went 43 and I should not have put her in that position to deal with it. That's my job.

@KC 2013 Tahoe You mentioned using Mobile One oil. Have you done an oil analysis after using it?