Two problems related to battery dead have been reported for the 1998 GMC Suburban. The most recently reported issues are listed below.
The positive battery terminal post broke loose from the battery, spilling battery acid on the brake tubing. Discussed battery failure with gm and they refused to replace battery due to the fact the vehicle was out of warranty.
1998, GMC, Suburban, replacement battery leaks onto right front wheel brake hose, corroding the fitting. Dealer has been notified. Consumer stated this is the second battery that has failed.