"General Motors is voluntarily recalling certain 2014-2018 model year Cadillac Escalade, Chevrolet Silverado, Chevrolet Suburban, Chevrolet Tahoe, GMC Sierra, and GMC Yukon vehicles for a condition related to increased brake pedal effort", GM said in a statement. This will increase the stopping distance needed, risking a crash.
GM said that owners of vehicles subject to the recall can take their trucks to a dealership, where the dealer will recalibrate the brake control module for free. Owners were to be notified starting September 6. The move, according to Reuters, is to address a vacuum pump issue that may potentially make braking more hard, and the problem has been linked to 113 accidents and 13 injuries.
GM said the vacuum assist pump, which is lubricated with engine oil that flows into the pump through a filter screen, can in some cases lose effectiveness over time, as debris such as oil sludge can accumulate on the filter screen.
GM will not replace the pumps in the vehicles, however. Thus, the remedy will involve a tweak to the secondary power brake assist system with a reprogramming, which kicks in if the vehicle detects a problem with the main system. The issue is that the pump output can drop quickly and result in a loss of brake assist for the vehicle.
Although the recall is a large number, the cost will not be high enough for GM to report it to the Securities and Exchange commission as an event that will materially affect earnings, Flores said. 5-litre turbocharged engines. GM says in documents posted Wednesday on the NHTSA website that a software error can corrupt data used by the engine control computer.
GM began investigating past year after getting higher than normal warranty claims for engine control computer replacements.