Q: What is the recommended course of action for issues with the cruise control system in Chevrolet Avalanche,Silverado,Suburban,Tahoe,GMC Sierra,Yukon,Yukon Denali and Yukon XL?
A: First of all, the Powertrain Control Module regulates the cruise control system and if you have problems with the cruise control system, check for the presence of trouble codes stored in the PCM. Also, if that doesn't turn up any problems, you must have it inspected by a repair shop.