1999 GMC Conventional technical service bulletins

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

• Feb 21, 2023 Service bulletinThis warranty administration bulletin provides information regarding the field action courtesy...
• Jan 31, 2020 Service bulletinElectrical system
• Nov 22, 2019 Service bulletinEquipment: electrical: anti-theft devices
• May 31, 2018 Service bulletinEquipment
• Dec 4, 2015 Service bulletinEquipment: electrical: anti-theft devices
• Nov 2, 2015 Service bulletinPower train
• Jun 30, 2014 Service bulletinVehicle Recalls
• May 9, 2014 Service bulletinThis informational bulletin provides the technician with information on what E85 fuel may due to a non E85...
• Feb 1, 2014 Service bulletinRefinishing Aluminum Wheels
• Jan 1, 2014 Service bulletinUnderbody Component Corrosion The following information may be helpful when addressing underbody component...
• Sep 1, 2013 Service bulletinExpanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
• Aug 1, 2009 Service bulletinSaab/hummer/gm: diagnostic tips/recommendations when power steering pump replacement is necessary....
• Oct 19, 2000 Service bulletinThis issue involves the visible nature of the frame rail inner edges on 1999 through 2001 medium-duty...