4.2L Inline Six Cylinder Engine Belt Diagram
 
4.2L Inline Six Cylinder Engine Belt Diagram -

Diagrams of serpentine engine drive belt routing for the GM 4.2 liter (4200) inline six cylinder engine in Chevrolet, GMC and Oldsmobile trucks. When replacing your truck drive belt, use the diagram to help with the installation if you forgot how it is routed.