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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Engine Mechanical - 2.8L (LWN) Diesel) >> Diagnostic Information and Procedures >> Drive Belt Tensioner Diagnosis

Drive Belt Tensioner Diagnosis

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
Step Action Yes No
1 Remove the drive belt. Refer to Drive Belt Replacement . 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 .
Is the repair complete?		 System OK -
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