How to replace the drive belt for the air conditioning, power steering, and water pump on Cadillac STS?

The replacement of the Drive Belt needs to begin by removing the fuel injector sight shield before removing the air cleaner outlet duct. A crankshaft driven cooling fan requires bracket removal prior to starting the work. First use a clockwise motion on the Drive Belt tensioner to free up the tension then easily remove the Drive Belt past the Water Pump Pulley by accessing it next to the lower reservoir mounting nut at the tensioner pulley side. The tensioner should automatically reach rest position while the Drive Belt is pulled off the other pulleys. The new Drive Belt requires installation by passing through the accessory drive pulleys while omitting both the tensioner and the Water Pump Pulley . The procedure starts with rotating the Drive Belt tensioner clockwise and placing the Drive Belt behind the tensioner before routing it around both tensioner pulleys while accessing the pulley from its position near the lower reservoir mounting nut. Then move the belt underneath the Water Pump Pulley. Check that the Drive Belt sits correctly in all accessory drive pulleys' grooves before letting go of the tensioner to inspect the belt position. Once finished work on the necessary components you should reinstall the Cooling Fan Bracket and next put back the air cleaner outlet duct before finally installing the fuel injector sight shield.

OEM Cadillac STS Drive Belt

Serpentine Belt

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6 Drive Belts found

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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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2011 Cadillac STS | Base, Platinum | 6 Cyl 3.6 L GAS
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Cadillac STS Serpentine Belt Part Number: 12621991
$48.34 MSRP: $105.53
You Save: $57.19 (55%)
Ships in 1-2 Business Days
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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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2011 Cadillac STS | Base, Platinum | 6 Cyl 3.6 L GAS
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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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2010 Cadillac STS | Base, Platinum | 8 Cyl 4.6 L GAS
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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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2010 Cadillac STS | Base, Platinum, V | 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS
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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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Cadillac STS | V | 8 Cyl 4.4 L GAS
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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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Cadillac STS | Base, Platinum, V | 6 Cyl 3.6 L GAS, 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS

Cadillac STS Drive Belt

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Drive Belt is one of those parts that qualify utmost importance as far as the functionality of Cadillac STS cars is concerned. This Drive Belt links the engine to other equipment like the alternator, and A/C compressor, so as to provide efficient transmission of power. Normally, it is made in a serpentine belt configuration and it goes round these parts and the crankshaft pulley to ensure proper functioning. Cadillac STS models use various types of the Drive Belts with V-belts and multi-groove belts which are engaged due to the traction level, durability, and flexibility. Interestingly, most of the Drive Belt s have a really long life expectancy, and the life expectancy of the Drive Belt is about 100000 miles; however, wear influences this figure. The Drive Belt as a part of Cadillac STS combines effectiveness of the car driving, increasing the safety level for driving, owing to the fact that critical parts of the car will work without failures. That it can fit into different STS models is evident in its importance in supporting the Cadillac brand's performance. Finally, there are additional distinguishing factors that cut across the Drive Belt in the auto market; hence: In summary, the Drive Belt is the perfect symbol of the Cadillac brand's focus on durability and power, which young Cadillac STS owners would want to preserve and continue standard excellence of the Cadillac luxury car brand.

Cadillac STS Drive Belt Parts Questions & Experts Answers

Serpentine Belt
12621991
Q: How to replace the drive belt for the air conditioning, power steering, and water pump on Cadillac STS?
A:
The replacement of the Drive Belt needs to begin by removing the fuel injector sight shield before removing the air cleaner outlet duct. A crankshaft driven cooling fan requires bracket removal prior to starting the work. First use a clockwise motion on the Drive Belt tensioner to free up the tension then easily remove the Drive Belt past the Water Pump Pulley by accessing it next to the lower reservoir mounting nut at the tensioner pulley side. The tensioner should automatically reach rest position while the Drive Belt is pulled off the other pulleys. The new Drive Belt requires installation by passing through the accessory drive pulleys while omitting both the tensioner and the Water Pump Pulley . The procedure starts with rotating the Drive Belt tensioner clockwise and placing the Drive Belt behind the tensioner before routing it around both tensioner pulleys while accessing the pulley from its position near the lower reservoir mounting nut. Then move the belt underneath the Water Pump Pulley. Check that the Drive Belt sits correctly in all accessory drive pulleys' grooves before letting go of the tensioner to inspect the belt position. Once finished work on the necessary components you should reinstall the Cooling Fan Bracket and next put back the air cleaner outlet duct before finally installing the fuel injector sight shield.