ground testing

[zeeman401]

Hi Guys, Newbie here.

2017 Silverado 1500 5.3.  After replacing the original battery 6 mos ago, suddenly I have been losing radio memory (2 times in 9 days) and also getting a DIC message "roll driver window up and down". Battery connections are clean and tight, battery voltage is good. What is the process for finding a bad ground or voltage drop? I( have a meter but would need instructions) Is there a place to see a list of the ground locations? Thanks in advance for any assistance. . . .Tim

[diyer2]

Have the battery load tested at an auto store?

[zeeman401]

No, I should try that first evidently, I ASSumed it was not thie issue since it was new. If that proves good, Ill need info on how to check the V drop and grounds. seems like a lot of posts on this type of problem. 

[Chester Hartsock]

The most common ground location for Chevy trucks is on the firewall. Other common ground wire locations include the door hinge, fender well, and battery tray. In some cases, the engine block may also be used as a ground location.