3 V6 Serpentine Belt Diagram - JustAutoRepair 3 V6 Serpentine Belt Diagram - Picture of serpentine engine drive belt routing for the GM 3.9 liter V6 engine in Chevy, Buick and Pontiac cars. When replacing your cars drive belt, use the diagrams to help with the installation if you forgot how it is routed. car ALTERNATOR REPLACEMENT - change SERPENTINE BELT + Mar 20, 2015car ALTERNATOR REPLACEMENT - change SERPENTINE BELT + belt installation diagram GM 3800 V6 3.8 L and squeal on GM 3800 Series II V6 3.8 Liter L36 Engines (3) such as on this 1997 Grand Prix How to replace a serpentine belt on a GM 3800 series II I used your instructions on changing a belt on a 3.8 v6. Just wanted you to know I found a super simple way to do it. all u do is remove the nut stud and spacer off the bottom of the mount. Slide the belt through there and your good. Much to my disappointment, GM engineers designed the serpentine belt to wrap around an engine mount.
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