GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2006 🢒 HHR 🢒 Engine 🢒 Engine Mechanical - 2.2L (L61) 🢒 Drive Belt Whine Diagnosis

Diagnostic Aids

The drive belt will not cause the whining noise.

If the whining noise is intermittent, verify that the accessory drive components are not the problem by varying their loads making sure they are operated to their maximum capacity. An overcharged A/C system, a power steering system pinched hose or incorrect fluid, or a failing generator are suggested items to inspect.

Test Description

The numbers below refer to the step numbers in the diagnostic table.

  1. This test is to verify that the noise is being caused by the drive belt or the accessory drive components. When removing the drive belt the water pump will not operate and the engine may overheat. Also DTCs may set when the engine is operating with the drive belt removed.

    2.

  2. The inspection should include checking the drive belt tensioner and the drive belt idler pulley bearings. The drive belt may have to be installed and the accessory drive components operated separately by varying their loads. Refer to the appropriate procedure for replacement procedure.

Step

Action

Yes

No

Notice: Do not use belt dressing on the drive belt. Belt dressing causes the breakdown of the composition of the drive belt. Failure to follow this recommendation will damage the drive belt.

DEFINITION: A high pitched continuous noise that may be caused by an accessory drive component failed bearing.

1

Did you review the Symptoms - Engine Mechanical operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Engine Mechanical

2

Verify that there is a whine noise.

Does the engine make the whine noise?

Go to Step 3

Go to Diagnostic Aids

3

  1. Remove the drive belt. Refer to Drive Belt Replacement .
  2. Operate the engine for no longer than 30 to 40 seconds.

Does the whine noise still exist?

Go to Engine Noise on Start-Up, but Only Lasting a Few Seconds , Upper Engine Noise, Regardless of Engine Speed , Lower Engine Noise, Regardless of Engine Speed , or Engine Noise Under Load

Go to Step 4

4

Inspect for a failed accessory drive component bearing.

Did you find and repair the condition?

Go to Step 5

Go to Diagnostic Aids

5

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

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