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Cadillac STS Pressure Test Radiator Cap at your home or office.

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Pressure Test Radiator Cap Service

How much does a Pressure Test Radiator Cap cost?

On average, the cost for a Cadillac STS Pressure Test Radiator Cap is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2007 Cadillac STSV8-4.6LService typePressure Test Radiator CapEstimate$114.99Shop/Dealer Price$132.49 - $145.62
2007 Cadillac STSV8-4.4L TurboService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2009 Cadillac STSV8-4.6LService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2008 Cadillac STSV8-4.6LService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.48 - $125.60
2010 Cadillac STSV6-3.6LService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.55 - $125.72
2006 Cadillac STSV6-3.6LService typePressure Test Radiator CapEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2009 Cadillac STSV6-3.6LService typePressure Test Radiator CapEstimate$99.99Shop/Dealer Price$117.28 - $130.25
2010 Cadillac STSV8-4.6LService typePressure Test Radiator CapEstimate$99.99Shop/Dealer Price$117.94 - $131.39
Show example Cadillac STS Pressure Test Radiator Cap prices

What is the radiator cap pressure test all about?

In a pressurized cooling system like those found on all cars, your car’s radiator cap is calibrated to seal in coolant to a particular pressure point, then allow some vapor to escape once that threshold has been reached. The ejected fluid is piped into the overflow bottle you might have seen in the engine bay. Then, as the engine cools, the coolant level may drop inside radiator. When that happens, a reverse-flow valve in the radiator cap opens to allow fluid from the bottle to return to the radiator. A radiator cap that isn’t working properly may cause too much fluid to escape the system.

Keep in mind:

  • A radiator cap pressure test is quick and simple, and replacement radiator caps are inexpensive.
  • Leaving a defective radiator cap in place can cause damage to the engine.

How it's done:

  • The vehicle engine is cooled before the radiator cap can be removed
  • The radiator pressure is relieved and the cap is removed
  • The radiator cap is pressure tested to specifications
  • The radiator cap is replaced and/or reinstalled to the radiator
  • The vehicle is verified to confirm problem is fixed

Our recommendation:

If your car’s engine overheats, or the overflow bottle seems overly full, have the radiator (and radiator cap) pressure tested.

What are the common symptoms indicating you need to pressure test the radiator cap?

  • Car overheats
  • Car’s overflow bottle fills up

How important is this service?

Not having this safety valve on the car’s cooling system operate properly can over- or under-pressurize the system, leading to damage to hoses, the radiator, and even the car’s cylinder head.

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services done by our mechanics
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Real customer reviews from Cadillac owners like you.

Excellent Rating

(115)
Rating Summary
104
5
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3
2
104
5
1
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2

Timmy

10 years of experience
43 reviews
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Timmy
10 years of experience
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by Kobei
Cadillac STS V8-4.6L - Engine hesitates during acceleration Inspection - Memphis, Tennessee
First of all Timmy is an overall great guy. Very helpful, honest , and informative. Which I think are great traits of a great trustworthy mechanic. I’d put my money on him any day.

Richard

13 years of experience
601 reviews
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Richard
13 years of experience
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by Robert
Cadillac STS V6-3.6L - Headlight Bulb Replacement (Passenger Side Low Beam) - Las Vegas, Nevada
Excellent work. Timely and efficient. Great communications

Breck

20 years of experience
681 reviews
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Breck
20 years of experience
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by Michael
Cadillac STS V6-3.6L - Strut Assembly Replacement (Front) - Katy, Texas
Breck arrived on time and started work right away. He worked diligently the whole time . He finished in the projected time and cleaned up after himself . I would certainly use him again

Fred

17 years of experience
389 reviews
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Fred
17 years of experience
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by Ulysses
Cadillac STS V6-3.6L - Starter - Houston, Texas
This was my first experience with yourmechanic. My car was not starting, so I booked the "car not starting inspection" with Fred on a Friday. I had a hunch my starter was the issue, but chose the inspection option since I wasn't 100% sure. Upon arrival Fred checked the battery along with a few other items and confirmed my starter was indeed bad. Since I had only booked the inspection Fred was not able to replace it that same day, but advised he would send me the quote and allow me to schedule it with an available mechanic. Just so happens this weekend things were pretty booked up so my appointment ended right back with Fred that Monday. Once again Fred showed up on time and got right to work. He replaced my starter and got me back up and running in no time. I would highly recommend this service and if/when needed I will use again.

Excellent Rating

(115)
Rating Summary
104
5
1
3
2
104
5
1
3
2
Number of Cadillac STS services completed
1265+
services done by our mechanics
TOTAL NUMBER OF EXPERT Cadillac MECHANICS
900+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

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