Glaval Titan Engine problems by year

This is a glaval bus on a gmc chassis, with a diesel engine. We have problems with the engine goes into its regeneration cycle. This causes excessive smoke and fumes to enter the passenger compartment of the bus. It has been to joe ball gmc in pittsburgh for service including reprogramming of the computer and for replacement exhaust parts. When the regeneration I son the drivers and passengers complain of the smoke and fumes. I have also contacted the gm customer service center regarding this concern. *Tr

This is a galval bus on a gmc chassis, with a diesel engine. We have problems with the engine when it goes into its regeneration cycle. This causes excessive smoke and fumes to enter the passenger compartment of the bus. It has been to joe ball gmc in pittsburgh for service including reprogramming of the computer and for replacement of exhaust parts. When the regeneration is on the drivers and passengers complain of the smoke and fumes. I have also contacted the gm customer service center regarding this concern. *Tr

This is a glaval bus on a chevrolet chassis, with a diesel engine. We have problems with the engine when it goes into its regeneration cycle. This causes excessive smoke and fumes to enter the passenger compartment of the bus. It has been to joe ball gmc in pittsburgh for service including reprogramming of the computer and twice for replacement of exhaust parts. When the regeneration is on the drivers and passengers complain of the smoke and fumes. I have also contacted the gm customer service center regarding this concern. *Tr