1998 GMC C7500 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...
• Aug 26, 2016 Service bulletinThis technical bulletin provides a procedure to reprogram the media disc player with the latest...
• Jun 30, 2014 Service bulletinVehicle Recalls
• 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....
• Jun 1, 2002 Service bulletinSubject regarding vibration or transmission output shaft damage / oil seal leak on conventional cab medium...
• May 1, 2002 Service bulletinInformation pertaining to the release of the exhaust manifold / turbocharger heat shield
• Dec 1, 2001 Service bulletinSome customers may comment that the radiator surge tank cap contacts the underside of the hood
• Mar 1, 2001 Service bulletinSome customers may comment that the windshield (w/s) washer reservoir shows an unexplained reduced fluid...
• Mar 1, 2001 Service bulletinSome drivers may comment that the generator upper mounting bolt is breaking on certain conventional medium...
• Dec 1, 2000 Service bulletinSome drivers may comment about the ABS lamp illuminating
• Nov 1, 2000 Service bulletinSome medium duty models with 3126 caterpillar diesel engine and allison automatic transmission may exhibit...
• Sep 1, 2000 Service bulletinExperiencing noisy release bearing, slipping clutch or inoerative clutch
• May 1, 2000 Service bulletinOn some medium duty trucks equipped with a diesel engine, air brakes, and the engine shutdown feature, the...
• Feb 1, 2000 Service bulletinSome owners may comment on the cab assist step cracking around the mounting bolts
• Feb 1, 2000 Service bulletinSome vehicles may experience on the cab assist step cracking around the mounting bolts
• Jul 1, 1999 Service bulletinOn some medium duty conventional models, the radiator surge tank cap contacting underside of hood
• Nov 1, 1998 Service bulletinErratic or premature upshifts, harsh down shifts, engine lugging, or low power performance
• Jul 1, 1998 Service bulletinSome vehicles equipped with air brakes and anti-lock brake systems, may exhibit brake control electrical...