Two problems related to ignition module have been reported for the 1997 GMC Suburban. The most recently reported issues are listed below.
While driving the Suburban just shuts off without warning, this happens on flat roads as well as hilly roads, the dealer was not able to duplicate the problem, but the entire computer ignition and the alternator were replaced. However, the truck continues to do the same thing.
When driving at 50 mph and making a right or left turn and increasing speed, consumer lost control of the steering, and the dealer replaced the sensor. Also, replaced the program ecm, and some metals parts that fell of the vehicle. The dealer can't determine what's wrong with the vehicle.