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Home >> Chevrolet >> 2000 >> Astro Van Passenger, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 946 (Engine Mechanical - 4.3L (LU3)) >> Diagnostic Information and Procedures >> Drive Belt Whine Diagnosis >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

The drive belt(s) will not cause the whine noise. If the whine noise is intermittent, verify the accessory drive components by varying their loads making sure they are operated to their maximum capacity. Such items but not limited to may be an A/C system overcharged, the power steering system restricted or the wrong fluid, or the generator failing.

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