GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
1998
🢒
GMC P42 Commercial Chassis
🢒
Engine
🢒
Engine Mechanical - 6.5L
🢒 Exhaust Manifold Cleaning and Inspection
Clean the sealing surfaces.
Clean the soot deposits from the exhaust manifold.
Inspect the manifolds for the following conditions:
•
Cracks
•
Broken flanges
•
Sealing surface damage