Battery Specifications
CAUTION:
When battery is disconnected, vehicles equipped with computers may lose memory data. When battery power is restored, driveability problems may exist on some vehicles. These vehicles may require a relearn procedure. See COMPUTER RELEARN PROCEDURES article in the GENERAL INFORMATION section.
1983-86 Models with VIN Code "R" and Heavy Duty models use Group 75A-72 batteries. Models with VIN Code "T" and "W" use Group 75-60 batteries.