Serpentine belt route

1989 GMC C1500
261,000 MILES • 5.7L • V8 • 4WD
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MATHAYUS
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Looking for a diagram for the serpentine belt. Problem is it looks like it had an air pump but no longer does and the way the serpentine belt was routed doesn't match any of the diagrams I can find.
Sep 5, 2019 at 10:55 AM
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SCGRANTURISMO
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Hello,

In the diagrams down below I have included the vehicle manufacturers diagram for the routing for the serpentine belt on your vehicle's Original Equipment (OE). If an air pump has been removed, use the guide as a reference and wrap a length of string around the pulleys, measure the string, and if needed get access to a computer and convert the measurement of the length of the string from inches to millimeters. You should then be able to purchase the correct length belt for your engine's new configuration. Please get back to us with how everything turns out.

Thanks,
Alex
2CarPros
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Sep 5, 2019 at 11:18 AM