Chevy Tahoe is a trustworthy road companion, but its a an equipment with numerous interconnected parts, and like any type of other an equipment it occasionally fail to deliver normal operation. In this write-up we walk through most common reasons of Tahoe’s break down and exactly how you deserve to fix the problem.

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Chevy Tahoe fifth Generation – (photo through Chevrolet)

The most common reasons that hinders normal starting operation of your Tahoe room dead an essential fob battery, dead 12v battery, corrosion top top battery terminals, negative alternator, clogged fuel filter, damaged starter, puffy fuse, north gas tank, immobilizer error or any fault in the electrical system.


1. Weak Battery

If your Tahoe’s engine won’t crank or cranks very slowly, climate the most most likely culprit is a weak or dead 12v battery. Investigating an ext closely and doing a battery voltage test will certainly clarify whether the beginning problem is because of the battery. A test have the right to be excellent to measure the voltage in between the battery poles, examine the mountain level and also assess the problem of the starter battery.

If a new car battery has actually been installed, the battery might not have actually yet got to its complete capacity. Over there is nothing to issue about. A brand-new battery only creates its complete capacity over time.

12V battery location on Chevy Tahoe 5th generation

Test 12v battery

The voltage the the battery on your Chevy Tahoe have the right to be measured exactly with a multimeter. Prior to the test, the multimeter is set to the voltage range of the battery and connected come its plus and minus poles. Successful testing of the vehicle battery, i.e. Check the voltage, usually outcomes in values ​​of approx. 12 to 13 volts. Values ​​above 14 or listed below 11.5 volts need an expert assessment of the problem of the auto battery. Due to the fact that the battery may have actually a defect through these measured worths ​​and should be replaced.

Jump begin Chevy Tahoe

If dead battery is the factor for the failure of her Tahoe, you can conveniently jump begin it using jumper cables and a healthy and balanced battery from another vehicle, or making use of a battery booster if available.

First affix red cable come the optimistic terminal of her Tahoe’s dead battery, climate to the confident terminal the donor battery. Next connect black cable to the an adverse terminal the donor battery, then to the bare metal in the engine only of your Tahoe. Start the donor vehicle and then her Tahoe. Remove the cables in reverse order.


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Illustration because that jump starting procedure

2. Corrosion top top battery

Corrosion top top the contact of your auto battery leader to ns of contact and also reduced existing flow, which method that your engine can no much longer start properly.


To recognize if your Tahoe’s beginning problems space from dirty battery contacts, you must investigate them. If girlfriend lift the rubber covers end the 2 battery terminals, friend can inspect the terminals for corrosion. If you uncover white shop or silvery-green deposits, yet no further cracks or damage, you perform not have to replace the battery, just clean it.

Clean battery corrosion

To clean the battery on her Chevy Tahoe, you have to remove the pole cables first, which calls for no special knowledge, just a small concentration, together the stimulate is an extremely important. Very first remove the black color cable indigenous the an adverse pole. If the pole clamp is really tight, you have the right to open it through pliers. Us advise against using steel pliers, but if you use them, you need to make sure that you carry out not touch any other components of the body. Next you can unplug the red optimistic pole cable. Once the battery has actually been gotten rid of from the circuit, you have the right to start clean the corroded battery. After ~ cleaning, reconnect the terminals.

3. Weak key fob battery

If her Tahoe has actually push start/stop button, climate its feasible that your automobile may not start because of weak vital fob battery. Don’t worry, you can still begin your vehicle – the battery is only used to send the signal for locking/unlocking. If the vital fob battery is empty, the door no longer locks or unlocks at the press of a button. The doors must then be opened up manually. The immobilizer is regulated by a passive transponder. Passive means, amongst other things, that the transponder in the vital does not need its very own power source.

How to start Chevy Tahoe v dead an essential fob battery

If you have actually a model of Tahoe i beg your pardon only has actually a crucial fob through start/stop button and also no location to insert a key, then try placing your vital fob as close to the start/stop switch as girlfriend can and also then start the vehicle. If that doesn’t work, climate look in her vehicle’s operational manual for specific location of an essential fob placement, as it might vary depending upon model.

Start/Stop button on Chevy Tahoe 5th generation

Tip: You have the right to try starting your Tahoe with its 2nd key, that will additionally rule out any kind of other difficulty with the an initial key, for example, water damage.

4. Damaged starter motor

A starter is a motor for beginning the engine of your Tahoe. The mean life of a starter motor is around 100,000 to 150,000 miles, and also the life will be shortened if the engine is started more frequently. In any type of case, due to the fact that the starter motor likewise has a minimal life, that will malfunction after using the automobile for a lengthy time, and if the starter motor breaks down, the engine will certainly not start.

Symptom: once you rotate the an essential to start the engine of your Tahoe, you will certainly hear a clicking sound, i beg your pardon is the sound the a negative starter motor. And if the starter engine does not job-related with a healthy and balanced battery, doubt a failure of the starter.

If the starter fails, the usually needs to be changed with a new one.

Temporary solve for starter

If the engine does no start as result of the starter, the engine might start if you revolve the key while hitting the starter motor with something prefer a rod or metal tool. This workaround is efficient when the components inside the starter room stuck with each other or the gears are slightly out of alignment.

However, the is feasible that the starter is nearing the finish of that is life, so that is recommended the you have it inspected in ~ a dealer or maintain shop.

5. Defective alternator

An alternator is a generator that produces electricity. If your Tahoe’s alternator fails, it will not be able to produce electricity and also the battery will not have the ability to charge. Therefore, even if girlfriend think the the reason of the engine not starting is a battery failure and replace the battery, the battery will soon run out and also the engine will not start.

Alternators hardly ever break down. In particular, modern cars have improved performance, so the is stated that they will certainly last 200,000 come 300,000 miles. Still, that can malfunction depending on just how you use it, and also in the case of a provided car, the alternator may be quite old. Nothing let your guard down.

If the alternator breaks down, it need to be changed with a brand-new alternator.

6. Clogged fuel filter

The fuel filter of her Tahoe does no wear out favor a mechanically part, however it gets clogged by dirt and also airborne particles and clogs over time. The permeability that the filter drops, and so go the fuel pressure. Come a details extent this no matter, yet if the fuel filter is as well dirty, the engine will no longer perform at full capacity and also in some circumstances may not begin at all. Cleaning is not possible, you have the right to only change the filter.

7. Fuel pump failure

If her Tahoe’s fuel pump fails, then the engine won’t start. The pump typically ensures the the essential amount the fuel is passed from the tank come the injection system of the engine with enough pressure.

Before her fuel pump stops working, it typically becomes noticeable: if your car’s engine breaks down from time come time, the vehicle is an overwhelming to start, the engine jerks a little or the engine power drops, friend should have your pump checked.

Wear or pollution of the pump have the right to be the factor for this. If the pump is leaking, a power call is broken, a line or a pump lever is broken, the fuel pump is usually additionally noticeable prior to failure. You deserve to have a defective fuel pump replaced in her workshop.

8. Puffy fuse

In rare cases, a puffy fuse could additionally be the culprit in the breakdown of her Tahoe. Inspect all fuses in the fuse box necessary for beginning the engine. But, be careful when lending a hand yourself to the fuse box! the box is under power and also repairs or tests should constantly be excellent in a workshop.

9. Defective spark plugs

Without work spark plugs, the engine will certainly not start. The spark plugs themselves are frequently not impacted by a defect. Instead, plug connections on the ignition system come loose. If only one plug is in reality loose, you deserve to fix the difficulty yourself top top site. If a spark plug has actually failed, it must be replaced in the workshop.

10. Rodent damage

Rodent damage can be another reason why her Chevy Tahoe i will not ~ start. The pets crawl under the vehicle and bite v cables and wires. In principle, this can influence all auto systems such as the fuel supply, the oil supply or the strength supply.

The rodent damage can generally be seen conveniently by looking right into the engine compartment. The damage caused by the rodent bite deserve to be repaired in the workshop. Be prepared for reasonably high costs here.

11. Engine failure

Although very rare, but it can likewise be the cause of the failure of her Tahoe. If a automobile has an engine failure, then nothing works anymore. The is not uncommon for the driver of a vehicle to be responsible for such damage. Typical causes include tearing of the time belt, not correct fueling, poor oil, hydrolock, overheating of the engine, or constant driving in an excessive speed range.

Chevy Tahoe fifth generation engine

Only an competent mechanic deserve to diagnose engine fail in a workshop.

Use OBD2 scanner because that diagnosis

Since Chevy Tahoe is equipped with on-board diagnostics (OBD), a fault diagnosis can carry out initial indications of where the breakdown is located.

To start troubleshooting, girlfriend must first connect the diagnostic device to your Tahoe. The OBDII connector is usually situated under the dashboard. Through the cable connected, you should turn the ignition on. However be mindful not to start the engine. Most diagnostic gadgets then ask for part information about the vehicle. That is necessary that you go into this 100% correctly, otherwise the an outcome of the search might be falsified. In enhancement to the vehicle manufacturer and model, you usually likewise have to form in the engine and also vehicle id number. For precise troubleshooting, always check whether the details is correct.

Conclusion

There are numerous reasons why her Tahoe may not start. When trying to find the trigger, you should always start through the most apparent cause, the north battery.

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In any kind of case, the is advisable because that laypersons to contact a failure service or a workshop. In the occasion of a defect, the latter can directly initiate the repair.