Suburban 1500

"Hard start" problems due to faulty glow plugs and wiring on GMC Suburban 1500

Problem Description and Possible Solution
Faulty glow plugs and incorrect wiring to the glow plugs have been known to cause "hard start" problems.
Problem Data
RepairPal Verified
Average mileage: (–)
Engine affected: 6.2L V8 Diesel
2 model years affected: 1990, 1991
2 people reported this problem