Tag: Reduced power

• Grok, YouTube And I Fixed The GMC

  December 1, 2025  It is dangerous, frustrating and frightening to have your truck go into “Limp Mode” while pulling a trailer. It first happened between Thunder Bay and Bayfield, Wisconsin on Lake Superior. The truck operates in reduced power and speed to protect the engine. It can happen for a variety of reasons: high engine…

  Greg

  December 1, 2025

  GMC Sierra diesel check engine light, Maintenance

  Check engine light, Continue driving to clean diesel exhaust filter, Diesel exhaust filter, Diesel exhaust system, Diesel maintenance, Diesel particulate filter, Limp Mode, Reduced power