GMC chervolet camaro 1999 Service Manual page 813

6-30 Engine Mechanical - 3.8 L Engine
Drive Belt Squeal (cont'd)
Step
Action Value(s)
Yes No
5
Repair or install new parts as necessary.
- -
Is the repair complete?
System OK
(
6
Check for a malfunctioning drive belt tensioner.
-
Is the drive belt tensioner malfunctioning? Go to Step 5 Go to Step 7
7
Check for correct drive belt pulley size.
-
Are the drive belt pulleys the correct size?
Go to Step 8 Go to Step5
8
Check for seized bearings.
-
Are there any seized bearings? Go to Step 5 System OK
Drive Belt Whine
Step Action Value(s) Yes No
1
Check for a worn component bearing.
-
Is a bearing making the noise? Go to Step2 System OK
2
Install new parts as necessary
- -
Is the repair complete? System OK
Drive Belt Rumbling
Step Action Value(s) Yes No
Check for severe drive belt pilling.
1
Is there severe pilling of more than 1/3 of the drive belt
-
rib depth? Go to Step 2 System OK
2
Install a new drive belt.
-
-
Is the repair complete? System OK
Drive Belt Falls Off
(
Step Action Value(s) Yes No
1
Check for a misaligned or a bent drive belt pulley.
-
Are the drive belt pulleys misaligned? Go to Step 2 Go to Step 3
2
Replace any misaligned or bent drive belt 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 continue 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
Replace any missing fasteners and tighten to
6
specifications.
-
Does the drive belt continue to fall off?
Go to Step 7
System OK
Check for a misaligned power steering pump drive belt
7
pulley.
-
Is the power steering pump drive belt pulley misaligned? Go to Step 8 Go to Step 9
Realign or replace the power steering pump drive belt
8
pulley. Refer to Power Steering Gear and Pump.
-
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.
-
Does the drive belt continue to fall off? Go to Step 11 System OK
(
11
Check for a malfunctioning drive belt tensioner.
-
Is the drive belt tensioner malfunctioning?
Go to Step 12
Go to Step 13