GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

DEFINITION: The following items can cause the drive belt to fall off.

1

Check for misaligned or bent pulley.

Are the pulleys misaligned?

Go to Step 2

Go to Step 3

2

Replace the misaligned or bent pulleys.

Does the drive belt continue to fall off?

Go to Step 3

System OK

3

Check for a bent or a cracked bracket.

Are any of the brackets bent or cracked?

Go to Step 4

Go to Step 5

4

Replace the damaged brackets.

Does the drive belt continues to fall off?

Go to Step 5

System OK

5

Check for loose or missing fasteners.

Are there any loose or missing fasteners?

Go to Step 6

Go to Step 7

6

Replace any missing fasteners and tighten to specifications. Refer to Fastener Tightening Specifications .

Does the drive belt continue to fall off?

Go to Step 7

System OK

7

Check for a misaligned power steering pump pulley.

Is the power steering pump pulley misaligned?

Go to Step 8

Go to Step 9

8

Realign or replace the power steering pump pulley. Refer to Power Steering Pump Pulley Replacement in Power Steering Systems.

Does the drive belt continue to fall off?

Go to Step 9

System OK

9

Check for a damaged drive belt.

Is the drive belt damaged?

Go to Step 10

Go to Step 11

10

Replace the drive belt. Refer to Drive Belt Replacement .

Does the drive belt continue to fall off?

Go to Step 11

System OK

11

Check for drive belt tensioner for operating correctly. Refer to Drive Belt Tensioner Diagnosis .

Is the drive belt tensioner operating correctly?

Go to Step 12

Go to Step 13

12

Replace the drive belt tensioner. Refer to Drive Belt Tensioner Replacement .

Does the drive belt continue to fall off?

Go to Step 13

System OK

13

Check for worn drive belt idler and drive belt tensioner pulley bearings.

Are the drive belt idler or the drive belt tensioner pulley bearings worn?

Go to Step 14

--

14

Replace the worn bearings.

Does the drive belt continue to fall off?

--

System OK