general problems of the 2011 Chevrolet Silverado 3500

Cp4 high pressure fuel pump failed causing loss of motive power (lomp) in oct of 2018. Truck became hard to steer and brake but I was traveling at a lower speed. Had it of been 1 hour later I would have been at freeway speeds pulling a 13000lbs trailer. I had the truck towed to a local dealer where they diagnosed the truck as having a failed cp4 high pressure fuel pump made by bosch. They informed me that the entire fuel system would have to be replaced do to the large amount of metal contaminants that this catastrophic failure produces and spreads though out the entire system. The total cost for the repairs were not covered under any type of warranty or recall and had to be paid entirely out of pocket. Not only was this a huge inconvenience as I was trying to leave town for a vacation it was very very expensive. I still can not understand why there has never been a recall on this issue. I think it can be related to a safety issue as a lomp. I believe gm knew that the cp4 pump was and could be a faulty product but continued to use it.

Diesel exhaust filter (def) and flow reduction tube on duramax lml engine. Fautly def requires extremely high temperatures to clean - or regenerate - causing the def and reduction tube to fail. High temperatures are a fire hazard to vehicle and grass or other terrain over which the truck is parked. Gm no longer manufactures the reduction tube, gm part number 25960609 forcing the consumer to wait for gm to make part on special order basis - over 30 days - or force consumer to remove def or make other fabrication, order to operate the vehicle. Gm is aware via customer service and dealer complaints that the lack of part 25960609 availability is a nation-wide problem and has a high failure rate. Gm stopped production as a cost saving measure. The duramax lml engine is in service mostly as commercial vehicle fleet. Thus, there is a high probability of unsafe fabrication in order to restore vehicle operation.