How to replace the drive belt for the water pump and generator on 2008 Cadillac STS?

The first procedure for Water Pump and generator belt replacement involves removing the necessary front compartment sight shield. The maintenance procedure begins with turning the Drive Belt tensioner clockwise so the belt tension reduces enough for you to slide the Drive Belt off the Water Pump Pulley. Proceed to remove the Drive Belt as you let go of the Drive Belt tensioner. Beginning with belt placement on the Crankshaft Pulley and tensioner then the generator follow with tensioner clockwise rotation to position the belt onto Water Pump and verify proper fitting into accessory drive pulley grooves. Release the Drive Belt tensioner gradually before restoring both the front compartment sight shield and the Drive Belt tensioner if needed.

OEM 2008 Cadillac STS Drive Belt

Serpentine Belt

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6 Drive Belts found

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2008 Cadillac STS Serpentine Belt
Part Number: 12621991
$48.34 MSRP: $105.53
You Save: $57.19 (55%)
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Product Specifications
- Other Name: Belt, Drive; Serpentine Belt Drive Kit; Accessory Drive Belt; Drive Belt; V-Belt; Alternator Belt
- Replaces: 12578002
- Item Weight: 0.50 Pounds
- Item Dimensions: 22.3 x 4.0 x 1.0 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12621991
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2008 Cadillac STS Submodels:
- Base, Platinum | 6 Cyl 3.6 L GAS
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2008 Cadillac STS Serpentine Belt
Part Number: 12578062
$32.98 MSRP: $58.90
You Save: $25.92 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Belt, Generator; Serpentine Belt Drive Kit; Accessory Drive Belt; Drive Belt; V-Belt; Alternator Belt; Belt, Drive
- Item Weight: 0.70 Pounds
- Item Dimensions: 17.3 x 3.7 x 0.9 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12578062
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2008 Cadillac STS Submodels:
- Base, Platinum | 8 Cyl 4.6 L GAS
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2008 Cadillac STS Serpentine Belt
Part Number: 12578000
$24.60 MSRP: $38.39
You Save: $13.79 (36%)
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Product Specifications
- Other Name: Belt, Drive; Serpentine Belt Drive Kit; Accessory Drive Belt; Drive Belt; V-Belt; A/C Belt
- Item Weight: 1.30 Pounds
- Item Dimensions: 21.2 x 3.5 x 1.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12578000
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2008 Cadillac STS Submodels:
- Base, Platinum | 6 Cyl 3.6 L GAS
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2008 Cadillac STS Serpentine Belt
Part Number: 12593189
Product Specifications
- Other Name: Belt, Water Pump, A/C Compressor & Power Steering Pump; Serpentine Drive Kit; Accessory Drive Belt.; A/C Belt; Belt, Drive
- Replaces: 12578063
- Item Weight: 0.70 Pounds
- Item Dimensions: 14.4 x 4.7 x 0.7 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12593189
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2008 Cadillac STS Submodels:
- Base, Platinum, V | 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS
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2008 Cadillac STS Drive Belt
Part Number: 12582643
Product Specifications
- Other Name: Belt, Drive; Serpentine Belt Drive Kit; Accessory Drive Belt; Serpentine Belt; V-Belt; Supercharger Belt
- Item Weight: 0.60 Pounds
- Item Dimensions: 25.5 x 5.7 x 1.0 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12582643
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2008 Cadillac STS Submodels:
- Base, Platinum, V | 6 Cyl 3.6 L GAS, 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS
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2008 Cadillac STS Alternator Belt
Part Number: 12587076
Product Specifications
- Other Name: Belt, Drive; Serpentine Belt Drive Kit; Accessory Drive Belt; Serpentine Belt; Drive Belt; V-Belt
- Item Weight: 0.50 Pounds
- Item Dimensions: 4.6 x 17.3 x 1.0 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12587076
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2008 Cadillac STS Submodels:
- V | 8 Cyl 4.4 L GAS

2008 Cadillac STS Drive Belt

With a comprehensive array of OEM 2008 Cadillac STS Drive Belt, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2008 Cadillac STS Drive Belt are backed by the manufacturer's warranty and are offered at competitive prices in the market. Rest assured, you can shop with complete confidence.

2008 Cadillac STS Drive Belt Parts Questions & Experts Answers

Q: How to replace the drive belt for the water pump and generator on 2008 Cadillac STS?
A: The first procedure for Water Pump and generator belt replacement involves removing the necessary front compartment sight shield. The maintenance procedure begins with turning the Drive Belt tensioner clockwise so the belt tension reduces enough for you to slide the Drive Belt off the Water Pump Pulley. Proceed to remove the Drive Belt as you let go of the Drive Belt tensioner. Beginning with belt placement on the Crankshaft Pulley and tensioner then the generator follow with tensioner clockwise rotation to position the belt onto Water Pump and verify proper fitting into accessory drive pulley grooves. Release the Drive Belt tensioner gradually before restoring both the front compartment sight shield and the Drive Belt tensioner if needed.