GMC R2500 Suburban Car Thermostat Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(49)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(49)

Car Thermostat Replacement Service

How much does a Car Thermostat Replacement cost?

On average, the cost for a GMC R2500 Suburban Car Thermostat Replacement is $205 with $65 for parts and $140 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1990 GMC R2500 SuburbanV8-5.7LService typeCar Thermostat ReplacementEstimate$323.98Shop/Dealer Price$369.83 - $499.26
1991 GMC R2500 SuburbanV8-7.4LService typeCar Thermostat ReplacementEstimate$309.55Shop/Dealer Price$352.27 - $476.32
1990 GMC R2500 SuburbanV8-7.4LService typeCar Thermostat ReplacementEstimate$314.97Shop/Dealer Price$359.07 - $487.20
1991 GMC R2500 SuburbanV8-6.2L DieselService typeCar Thermostat ReplacementEstimate$309.77Shop/Dealer Price$352.57 - $476.80
1991 GMC R2500 SuburbanV8-5.7LService typeCar Thermostat ReplacementEstimate$313.73Shop/Dealer Price$359.00 - $487.30
1990 GMC R2500 SuburbanV8-6.2L DieselService typeCar Thermostat ReplacementEstimate$309.77Shop/Dealer Price$352.71 - $477.05
Show example GMC R2500 Suburban Car Thermostat Replacement prices

What is an engine cooling system thermostat and how does it work?

The car's engine cooling system thermostat is a small valve within a cooling system passageway that opens and closes in response to the temperature of the circulating engine coolant. When your car is first started and the coolant is cold, the valve in the thermostat will be in the closed position, circulating the coolant flow only within the engine instead of flowing to the radiator, which allows the engine to warm up fast, promoting fuel efficiency, low emissions, and reduced engine deposits. Once the engine coolant reaches the design temperature, usually around 195 degrees, the valve will open and close as you drive in order to maintain a coolant temperature typically between 195 to 225 degrees Fahrenheit.

Thermostat

When to consider replacing the engine cooling system thermostat:

  • Engine overheats. A thermostat with the valve stuck closed is a common cause of engine overheating. However, since there are other causes of overheating, a mechanic will thoroughly inspect the cooling system prior to condemning the thermostat. Since it is usually not known how badly the engine overheated, the mechanic will also try to determine if there is evidence that the cylinder head gasket was blown. If so, it would be repaired prior to replacing the thermostat.
  • Temperature gauge reads too low or too high. Thermostats can get sticky, causing the engine temperature to stray from the optimal range. Your dash-mounted temperature gauge will notify you of this malfunction.
  • Cooling system repairs. All thermostats eventually fail. Therefore, if the cooling system is already open for major repairs, such as water pump or radiator replacement, it is recommended to install a new thermostat simply as insurance against future breakdown.

How do mechanics replace the engine cooling system thermostat?

  • Once the engine is completely cold, the radiator cap is loosened and enough coolant is drained from the radiator so the coolant level is below the thermostat housing.
  • The thermostat housing is removed and the thermostat and gasket are extracted. Note that some cars have more than one cooling system thermostat and both might need replacement.
  • All mounting surfaces on the thermostat housing are cleaned of old gasket material. A new gasket is applied and the thermostat is re-installed in the correct orientation and with the temperature sensing cylinder facing downward towards the engine.
  • The thermostat housing bolts are tightened to original equipment manufacturer (OEM) specifications using a calibrated inch-pound torque wrench.
  • The cooling system is refilled with the appropriate coolant type and the system is fully bled of all air.
  • The car engine is run until the normal operating temperature is reached, and while taking precautions with the hot coolant, the coolant level is rechecked while confirming there is flow through the radiator — either visually or with an infrared temperature gun. This will confirm the thermostat is open. Finally, the engine is checked for leaks.

Is it safe to drive with an engine cooling system thermostat problem?

No. If it has been determined that there is a thermostat problem, it should be repaired right away. Failure to do so can cause substantial and costly damage to the engine.

When replacing the engine cooling system thermostat keep in mind:

  • Engine overheating due to causes other than a faulty thermostat, will themselves damage a thermostat. Therefore, always replace the thermostat if the engine overheats, even if the thermostat was not the initial cause of the overheating.
  • The thermostat should be replaced anytime you have major work done on the coolant system. It is convenient and costs little during such repairs and insurance against future breakdown.
  • OEM thermostats are the best ones to use and you can request your mechanic to install only the OEM thermostat. Dealer supplied, OEM thermostats are sometimes more costly but are generally higher quality and specifically engineered for your car.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert GMC mechanics

Real customer reviews from GMC owners like you.

Excellent Rating

(49)

Rating Summary
49
0
0
0
0
49
0
0
0
0

Matthew

34 years of experience
1438 reviews
Matthew
34 years of experience
GMC Envoy XL L6-4.2L - Thermostat - Newport News, Virginia
Matt came by and changed out a thermostat in my truck. He was knowledgeable and professional. Really enjoyed the convenience of the service and quality of the work!!

Jeffrey

28 years of experience
870 reviews
Jeffrey
28 years of experience
GMC Canyon L5-3.5L - Thermostat - Charlotte, North Carolina
Excellent to say the least!!! Jeffrey arrived prior to the appointment time. He was very cordial and friendly.....excellent spokesperson and representative for "Your Mechanic". He performed the work promptly and in a professional manner. I will definitely use "Your Mechanic" again and will request Jeffrey.

Mazyar

20 years of experience
587 reviews
Mazyar
20 years of experience
GMC Yukon V8-6.0L - Thermostat - Atlanta, Georgia
A Thorough, knowledgeable,... and expert technician.

Christopher

28 years of experience
364 reviews
Christopher
28 years of experience
GMC Sierra 2500 HD V8-6.6L Turbo Diesel - Thermostat - Plant City, Florida
Did an excellent job. Honest, on time, and did what he said he was going to do.

Excellent Rating

(49)

Rating Summary
49
0
0
0
0
49
0
0
0
0
Number of GMC Car Thermostat Replacement services completed
539+
services done by our mechanics
TOTAL NUMBER OF EXPERT GMC MECHANICS
900+
experts on our platform

Recent articles & questions

Can I Drive with Damaged or Missing Mirrors?
It’s critical that you’re able to see behind and beside you while driving. This is accomplished by using the rearview mirror, or one of...
P0471 OBD-II Trouble Code: Exhaust Pressure Sensor Range/Performance
P0471 means the powertrain control module has detected an voltage that is out of the normal range due to the exhaust back pressure system.
How Long Does a Transfer Case Output Shaft Seal Last?
The The transfer case output shaft seal is located on the transfer case of vehicles with four-wheel drive. This transfer case allows you to switch between two-wheel drive, neutral, to, low four-wheel, and drive four-wheel drive. The case consists of...

Idle set to low

It is possible that the idle may need to be readjusted so your car will run correctly. I would have one of the mechanics at YourMechanic inspect your vehicle's idle (https://www.yourmechanic.com/services/car-idle-is-rough-inspection) to see if there is anything that needs to...

My car was overheating won't start after we fix it

Check for diagnostic trouble codes. Overheating has the potential to cause head gasket leaks and valve and piston damage. You should measure cylinder compression to first be sure that the engine is basically mechanically sound. If cylinder compression is normal,...

The [fuel pump](/topics-fuel-pump-jeep/) is pumping air

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com