Battery Specifications

Fig 1: Auxiliary Battery Location (6.5L Models)

Courtesy of GENERAL MOTORS CORP.

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 the COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION.

BATTERY SPECIFICATIONS

Year & Engine

Model Number

4.3L

78A-72 ⁽¹⁾

5.0L

78A-72 ⁽¹⁾

5.7L

78A-72 ⁽¹⁾

7.4L

78A-72 ⁽¹⁾

6.5L Diesels

78A-72⁽¹⁾⁽²⁾

⁽¹⁾	Replace with battery of same group number as shown on original battery label

⁽²⁾	All diesel-powered vehicles use 2 batteries