How to Troubleshoot a 2015 Suburban Radiator Fan That Stays On

The 2015 Suburban’s radiator fan will remain on indefinitely when the vehicle is running.

2015 Suburban Radiator Fan Stays On

When it comes to the 2015 Suburban Radiator Fan staying on, complex conditions may arise. For example, if the fan motor is stuck, there is a risk of overheating and consequent damage to your vehicle. To address this issue, a professional diagnostic procedure must be completed. This procedure entails diagnosing the source of the problem, from checking its wiring and temperature sensors to ensuring that all components are operating optimally. After verifying that everything is in good working order, you can begin the repair process if necessary. The cost for these services varies depending on the severity of the issue but can be significant, making it important to quickly diagnose and correct any issues before they become more severe or even latent. Fortunately, a professional mechanic can usually service your vehicle to rectify this issue quickly and easily.

Introduction

If you own a 2015 Suburban and recently noticed that the radiator fan is staying on even when the engine is otherwise off, this guide can help you diagnose the issue and determine what repair needs to be done. In many cases, the radiator fan will stay on due to a faulty relay or other electrical problem, but it is also possible that there is an issue with the cooling system itself. This guide will walk you through steps to troubleshoot and repair your 2015 Suburban radiator fan so that it will turn off as intended when not in use.

Checking The Coolant Level

The first step in diagnosing a radiator fan problem on a 2015 Suburban is to check the coolant level. Low coolant levels can cause an overheat condition, which can lead to the radiator fan staying on even when the engine is off. To check the coolant level, open the hood of your Suburban and locate the coolant overflow tank. The overflow tank should have a cap with two lines indicating low and full levels of coolant. If your Suburbans coolant level is low, fill it up with distilled water until it reaches the full line indicated on the overflow tank.

Checking The Radiator Fan Relay

If your Suburbans coolant level was low but has now been filled up, then its time to check out the radiator fan relay. The relay controls when the radiator fan turns on and off, so if there is an issue with it then this could be causing your issue with your radiator fan staying on constantly. To check out this part, locate your Suburbans fuse box which should be located under the hood near where you checked out your coolant level earlier. Once you have located it, open up its cover and locate the relay labeled Radiator Fan Relay (it may also be labeled Cooling Fan Relay).

If this relay looks corroded or has any other visual damage then you should replace it immediately as this could be causing your issue with your radiator fan staying on all of the time. If there isnt any visible damage to this part then take out its fuse (located in its slot) and inspect for any corrosion or other visible damage that may not have been noticeable from outside of its slot before replacing it back into its slot firmly and securely.

Testing The Radiator Fan

Once you have inspected and/or replaced your radiator fan relay if needed, now would be a good time to test out whether or not replacing/repairing this part actually fixed our issue with our 2015 Suburban’s radiator fan staying on all of time by running an actual test of our cooling system using our car’s diagnostic computer system (most vehicles today come equipped with one). To do so:

1) Turn off all car components except for essential ones such as headlights/taillights etc..

2) Connect our car’s diagnostic computer system up to our car’s OBD-II port (which should be located either just under our dashboard near our steering wheel or near our glovebox).

3) Run a diagnostic scan by following instructions displayed by our car’s computer system until we reach a section labeled “Radiator Fan Test”.

4) Select “Radiator Fan Test” option from menu displayed by computer system & follow instructions displayed in order for us to run an actual test of our cooling system & see if replacing/repairing our radiator fan relay fixed our problem with our 2015 suburban’s radiator fan staying on all of time or not (if not then further investigation may need to take place).

If after running a diagnostic scan & testing out whether or not replacing/repairing your radiator fan solved your issues & found that indeed replacing/repairing did fix them then congratulations! If however after running a diagnostic scan & testing out whether or not replacing/repairing did fix them found that no matter what you did still having issues where everytime turns off engine back immediately comes back again means may need further investigation taking place in order find root cause why happens happening & fix accordingly before further damage occurs vehicle itself (which could potentially lead expensive repairs down road).

Background Information

The 2015 Suburban radiator fan is an important component of the vehicle’s cooling system and is necessary for it to operate correctly. The fan works by blowing air through the radiator to keep the engine cool. If the fan fails to work properly, the engine can overheat and cause serious damage. If the fan stays on, it can also cause other issues such as draining the battery or damaging other components.

Common Causes

When a 2015 Suburban radiator fan stays on, there are several common causes that should be considered. One of the most common causes is a faulty relay switch, which controls when the fan turns on and off. Other possible causes include a faulty thermostat, a faulty temperature sensor, or a defective electric motor in the fan itself.

Troubleshooting

The first step in troubleshooting this issue is to check for any loose connections or wiring issues that could be causing the problem. If all connections appear to be secure and intact, then it is time to check for any faults in the relay switch. This can be done by checking for any burnt out fuses or relay contacts that may have been damaged due to excessive heat or electrical current.

Diagnosis

If all connections appear to be secure but there are still issues with the fan staying on, then it may be necessary to use a diagnostic tool such as an OBD-II scanner in order to pinpoint which component is causing the issue. By scanning for codes related to cooling system components, it will be possible to determine which component needs replacing in order to resolve this issue.

Replacement Parts

Once diagnosis has determined which component needs replacing, it will then be necessary to purchase new replacement parts for installation into the vehicle. The parts required will depend on which component has failed; however some of the most common parts would include an electric motor for a defective fan motor; thermostat; temperature sensor; and relay switch if this has failed due to excessive heat or electrical current overloads etc.

Installation

Once all required parts have been obtained, they can then be installed into their respective locations within the vehicle’s cooling system components according to manufacturer instructions and diagrams provided with each part purchased. It is important that all steps are followed correctly so as not to cause any further damage or electrical shorts within the system itself while attempting installation of these components into place.

FAQ & Answers

Q: What could cause the radiator fan on a 2015 Suburban to stay on?
A: A few things could cause the radiator fan on a 2015 Suburban to stay on. It could be an issue with the fan motor, a faulty relay, or a bad thermostat. Another potential culprit is an electrical short or wiring issue.

Q: How can I tell if the fan motor is causing the issue?
A: If you suspect that the fan motor is causing the issue, you can remove the fan and check for any signs of damage. If there is no visible damage, then you should check for continuity between the terminals of the motor with a multimeter to see if it is functioning properly.

Q: What should I do if I find a faulty relay?
A: If you determine that there is a fault with the relay, then it will need to be replaced. It is important to use one that matches your make and model of vehicle as closely as possible in order to ensure proper function.

Q: Could it be an issue with my thermostat?
A: Yes, it could be an issue with your thermostat. You can test the thermostat by removing it from its housing and submerging it in hot water for several minutes. If it doesn’t open at its rated temperature then you should replace it.

Q: Is there anything else I should check for?
A: Yes, you should also check for any signs of an electrical short or wiring issues in your vehicle’s electrical system. This can be done by inspecting all wiring connections and checking for any frayed or damaged wires. Additionally, make sure that all fuses are intact and not blown out.

In conclusion, the 2015 Suburban Radiator Fan Stays On is likely due to a faulty cooling fan motor or relay. The fan is designed to run when the engine is hot, but if it stays on even when the engine is cool, then there may be a problem with the wiring or components of the cooling system. If you are experiencing this problem, it is best to take your vehicle to a certified mechanic for an inspection and repair as soon as possible.