Silverado 2500 2WD V8-8.1L VIN G (2005)
maximum capacity. An overcharged Air Conditioning (A/C) system, a power steering system restriction or the incorrect fluid, or a failing generator
are suggested items to inspect.
Test Description
The number(s) below refer to the step(s) in the diagnostic table.
3. This test is to verify that the whine is being caused by the accessory drive component(s). Remove the drive belt (s) and operate the engine for a
few seconds, this will verify if the whining noise is related to the accessory drive component. With the drive belt(s) removed the water pump will
not operate and the engine may overheat. Also Diagnostic Trouble Codes (DTCs) may set when the engine is operate with the drive belt(s)
removed.
4. The inspection should include checking the drive belt tensioner and the drive belt idler pulley bearings. The drive belt(s) may have to be installed
and the accessory drive components operated separately by varying their loads.