Diagnostic Aids

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

The charging area should be well ventilated.
Do not charge a battery that appears to be frozen. Allow the battery to warm to room temperature and test it using the EL 50313 Battery Tester before charging.
An AGM battery may be damaged if charged to more than 14.5 V.
A Flooded Cell battery may be damaged if charged to more than 16.5 V.
Vehicles with dual batteries must be charged individually which will result in two printouts.