GM Service Manual Online
For 1990-2009 cars only

Intermittents and Poor Connections for Chevrolet Chevy Suburban - 2WD 1998

Faulty electrical connections and wiring cause most intermittent faults, although a damaged EVO/Passlockā„¢ module can occasionally be at fault. Refer to Intermittents and Poor Connections Diagnosis in Wiring Systems for a detailed explanation on locating and repairing intermittent conditions.