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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 152 (Engine Mechanical - 4.8L, 5.3L, 6.0L And 6.2L (1 Of 5)) >> Diagnostic Information and Procedures >> Drive Belt Tensioner Diagnosis

Drive Belt Tensioner Diagnosis

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Drive Belt Tensioner Diagnosis

Step Action Yes No
1 Remove the drive belt. Refer to Drive Belt Replacement - Accessory or Drive Belt Replacement - Air Conditioning . Inspect the drive belt tensioner pulley.
Is the drive belt tensioner pulley loose or misaligned?		 Go to Step 4  Go to Step 2 
2 Rotate the drive belt tensioner.
Does the tensioner rotate without any unusual resistance or binding?		 Go to Step 3  Go to Step 4 
3
  1. Use a torque wrench in order to measure the torque required to move the tensioner off of the stop.
  2. Use a torque wrench on a known good tensioner in order to measure the torque required to move the tensioner off of the stop.
Is the first torque reading within 10% of the second torque reading?		 System OK Go to Step 4 
4 Replace the drive belt tensioner. Refer to Drive Belt Tensioner Replacement - Accessory or Drive Belt Tensioner Replacement - Air Conditioning .
Is the repair complete?		 System OK -
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