Chevrolet Blazer Won’t Start: Top 14 Causes & Solutions

As a certified auto mechanic with in excess of 20+ years of experience, I’ve seen a fair share of Chevys that refuse to start. Hi, I’m Robby and I get how frustrating this can be for people, especially when you have things to do and places to be. But don’t panic! In this article, I’ll share my expert insights on the most common reasons your Chevy Blazer won’t start, along with helpful tips to get you back on the road quickly.

With advanced certifications in electrical systems and engine performance, I’ve found and fixed just about every “no start” issue out there. I’ll guide you through how to analyze your Blazer’s symptoms, zero in on the root cause, and determine if it’s a do it yourself repair or best left to a professional mechanic. I’ll also give recommendations for products that can help you solve your issue, as well as make sure it doesn’t happen again in the future.

Quick Solution Alert! 🚗💡

To save you time, this might be the quick solution you need.

An online mechanic can help you solve the issue much faster, and save money doing it.

They help 1000s of people every day in your position, save a lot of time, money and risk getting their vehicle repaired. Having a friendly expert mechanic guiding and advising you every step of the way, is the best thing you can do. You will have your issue fixed faster, and likely cost much less.

Quick Solution Alert! 🚗💡

To save you time, this might be the quick solution you need.

An online mechanic can help you solve the issue much faster, and save money doing it.

They help 1000s of people every day in your position, save a lot of time, money and risk getting their vehicle repaired. Having a friendly expert mechanic guiding and advising you every step of the way, is the best thing you can do. You will have your issue fixed faster, and likely cost much less.

Quick Solution Alert! 🚗💡

You can read on, or get instant help with your issue. We have the best online mechanics, but before asking them, we recommend asking our AI mechanic first as it’s 100% FREE.

9 out of ten times the AI mechanic is able to help you solve the problem for free, and if it’s not, you can chat with a human mechanic on the next page anyway.  Try it for free below. 

Dead Battery in a Chevrolet Blazer 

car wont start but battery is good
Image Credit: MechanicAnswer.com

The most common reason a Chevrolet doesn’t crank is a dead or weak battery. Your battery supplies the initial burst of electricity to crank the engine and get it running.

Indications of a dead battery:

  • Silence upon turning the key – no engine cranking
  • Electronics not powering on
  • Difficulty starting in cold weather

How to Fix It: Keep jumper cables on hand for a dead battery emergency. Jump starting your Chevy Blazer using another vehicle or portable charger can supply enough juice to get it started.

You can also try cleaning corroded battery terminals if they prevent a good connection. If problems continue, have your battery tested – it may need recharging if worn out.

Robby Recommends:

Portable Car Battery Jump Starter Charger - NOCO Boost Plus GB40

At Home Battery Charger - YONHAN - Fully Automatic

Jumper Cables by Energizer for Car Battery - Heavy Duty

NOCO Boost Plus GB40 1000A UltraSafe Car Battery Jump Starter

YONHAN Battery Charger Fully-Automatic

Energizer Jumper Cables for Car Battery, Heavy Duty

Bad Alternator in a Chevrolet Blazer 

is my alternator stopping my car from starting? If your battery checks out but your Chevy Blazer still won’t crank, the culprit may be a bad alternator. This key component charges your battery while driving and energizes the electronics.

Clues of a bad alternator:

  • Battery warning indicator illuminating
  • Lights fading
  • Difficulty starting, especially after short trips

The Fix: Get your alternator inspected immediately by a mechanic. A bad alternator can rapidly deplete your battery. This will need to be replaced by an experienced mechanic.

Faulty Spark Plugs in a Chevrolet Blazer 

Auto mechanic and spark plug Spark plugs fire the air/fuel ratio in the cylinders to run your car. When they are dirty, bad, or corroded, your Blazer may not start due to no spark.

Clues of bad spark plugs:

  • Poor fuel economy
  • Rough idle
  • Engine sputtering

The Fix: Spark plugs need regular replacement as they wear out. Most last 30k+ miles. Have your plugs checked and change any faulty ones. Using quality gas helps avoid buildup.

Ignition Problems in a Chevrolet Blazer

My car wont start, is it a faulty ignition switch? Problems with parts like the switch, lock cylinder, fob, or wiring can prevent your Chevy from starting.

Signs of ignition trouble:

  • No noise upon turning key
  • Dashboard malfunctioning
  • Key won’t turn

The Fix: For fob issues, try the battery. For other problems, have the system diagnosed and repaired professionally. If you need a new Chevy key fob you can get one online here.

Bad Starter in a Chevrolet Blazer

Starter motor problems in car The starter motor engages when you turn the key to start the engine. If it’s worn out, your Chevrolet Blazer may not crank.

Symptoms of a bad starter:

  • No noise upon turning key
  • Clicking but no turnover
  • Unusual noises

The Fix: Have your starter inspected and repaired if faulty. This requires the help of a professional mechanic to diagnose and repair.

Not in Park or Neutral in a Chevrolet Blazer

transmission not in park so car won't start If your gearbox isn’t in Park or Neutral, your Chevy’s safety features will prevent it from starting.

The Fix: Shift into Park/Neutral and try once more. If it only starts in one gear, you may have a faulty neutral safety switch needing repair. This will need to be repaired by a local mechanic near you.

Clogged Fuel Filter in a Chevrolet Blazer

my car wont start but clicks, could it be the fuel filter? A clogged fuel filter can constrain fuel delivery to the engine, preventing your Chevy Blazer from turning over.

Signs of a clogged filter:

  • Hard time starting
  • Engine misfiring
  • Decreased fuel economy

The Fix: Change the filter per your schedule or if thought clogged. Use quality gas and change regularly. You can have a local mechanic repair this for you, or repair it yourself, maybe with the help and guidance of an online mechanic.

Faulty Fuel Pump in a Chevrolet Blazer

faulty fuel pump The fuel pump delivers gas from the tank to the engine. If it fails, your Chevy won’t start due to no fuel.

Symptoms of a bad pump:

  • No sound upon turning key
  • Hard time starting
  • Stalling when running

The Fix: Have your pump tested. If faulty, a mechanic near you will need to replace it.

Compression Issues in a Chevrolet Blazer

auto mechanic doing a tune up Proper compression is required to combust the air/fuel mixture. Low compression from leaks can cause a no start.

Signs of compression issues:

  • Difficulty starting
  • Rough idle
  • Lack of power

The Fix: Testing can confirm low compression. For diagnostics and carrying out this repair, a local mechanic is usually needed and will have to replace the worn engine components.

Timing Belt Failure in a Chevrolet Blazer

broken timing belt car The timing belt keeps the camshaft and crankshaft. If it snaps, the valves and pistons aren’t synchronized properly and your Chevrolet Blazer won’t start.

Symptoms of a bad timing belt:

  • No start
  • Unusual ticking noise

The Fix: Have your belt inspected and replaced immediately if broken. This requires a local professional mechanic to replace the timing belt of your Chevy Blazer.

Detached or Loose Battery Cable in a Chevrolet Blazer

122654fa c6ae 4f2a 98d9 84b95ea016ca A loose battery cable can disrupt electricity current in your Chevy. This common problem can prevent starting.

Signs of a bad cable:

  • Corroded terminals
  • Power loss from moving cables
  • Frayed wiring

The Fix: Clean corroded terminals and tighten loose connections. Damaged cables need replacement. You can get expert Chevy mechanic advice and guidance online or with a local mechanic.

Faulty Relays in a Chevrolet Blazer

faulty relay switch preventing car from starting Relays control power to components like the starter, fuel pump, and computer. Failure can prevent your Chevy Blazer from starting or running right.

Identifying relay problems:

  • Swap relays to test
  • Have relays checked by a mechanic

The Fix: Faulty relays must be replaced, often after a larger diagnostic. You will likely need a local mechanic to diagnose if the faulty relay is preventing your Chevy from starting.

Low Fuel or Empty Tank

car wont start because of no fuel Running your tank bone dry can cause a no-start due to lack of fuel. This seems obvious however it often happens because of an inaccurate or broken fuel gauge.

The Fix: Keep your tank at least 1/4 full to avoid unexpected emptying. If issues persist, have your fuel sender unit checked by a professional mechanic.

Engine Flooding

Overfill fuel causing car to not start Sometimes an engine can flood with too much fuel, preventing starting due to wet spark plugs. This is most common in older carbureted engines.

The Fix: Press the gas pedal fully and crank briefly to clear the system so the plugs can spark. If problems continue, have the carburetor adjusted by a professional local mechanic.

Top 3 Ways To Get a Mechanics Help

Ask the mechanic With so many potential issues for a no start situation, it can be challenging to pinpoint the exact problem yourself. In some cases, seeking assistance from an experienced mechanic can save you time and give you peace of mind.

These are the 3 ways to get a mechanic’s help in starting your Chevy again.

1. Local Auto Repair Garage Near You

Local Garage mechanics This is the regular way to get it repaired, however, it can be very wasteful in time and money, transporting your vehicle to them, plus expensive garage fees as they often have expensive overhead costs etc, that they have to pass on to the customer.

2. A Mobile Chevrolet Mechanic Near You

mobile mechanic to get my car starting again Having a qualified mobile mechanic come to your Chevrolet Blazer and repair it on-site can be a great time and money saver. The best mobile mechanics we can recommend in the USA are RepairSmith and YourMechanic. We have recommended them thousands of times, and they both have great prices, services and coverage across most of the USA.

3. Chat with a Chevy Mechanic Online

when to ask a mechanic This is a fantastic choice for most DIYers or car enthusiasts. It’s often  an easy repair you can do on your own, like replacing or powering up the battery. In these instances, if you are aware of what to do in a stepwise fashion, you can do it yourself, you do not have to pay a mechanic on-site. Well, it’s your lucky day, an online mechanic can offer all the help, advice, and advice you need, right away by online chat. You can then perform the simple repair on your own.

The best online mechanic we suggest is JustAnswer, and through our link, you can get a trial of their assistance for just $5, inquire endless inquiries for a week, get the help you need, and you don’t have to continue the service after that. We love JustAnswer for this reason, expert auto mechanic assistance for just $5 is an unbeatable price.

The qualified mechanics at JustAnswer’s Ask a Mechanic service are ready 24/7 to provide online analysis and advice. The perks of consulting with a mechanic online are:

  • Convenience: Get help from the comfort of your residence without having to schedule an appointment or wait at a shop.
  • Fast answers; Mechanics reply in minutes with possible causes and solutions based on your description.
  • Cost savings: Pay per question rather than full diagnostic fees – great for basic troubleshooting.
  • Documentation: All conversations are logged in writing, providing helpful reference.
  • Expert help; Seasoned licensed mechanics have the expertise to address Chevy Blazer|Chevrolet Blazer no starting issues with ease.

You will get matched with the best auto mechanic for your particular case, it doesn’t matter if it’s a Blazer or your Chevrolet C/K won’t start, the expert Chevy mechanic you are paired with, will be the best for the job.

So next time you find yourself searching online for something like “Chevy starting problems“, consider our Chrevrolet mechanic online service.  In just minutes, you can access expert Chevrolet knowledge to help get your beloved Blazer started again.

FAQs (Frequently Asked Questions) When a Chevrolet Blazer Won’t Start

Chevrolet Blazer won’t start but lights come on?

If your Chevrolet Blazers lights illuminate but it still won’t start, the issue is likely not related to the battery. It’s highly possible there is a problem with the starter motor. Check to see if you hear any clicking noises when attempting to crank the key. If so, the starter motor is trying to engage but failing. Have a mechanic inspect the starter motor – it may need to be fixed or swapped out.

Chevrolet Blazer won’t start but has power?

When your Chevrolet Blazer has power (lights, radio etc work) but fails to start, there may be a fuel delivery problem. Issues like a faulty fuel pump relay could stop fuel getting to the engine. Without enough fuel, combustion can’t happen and the engine won’t start. Check around the back seat when cranking the key – you should hear the fuel pump prime for a few seconds. If not, get a mechanic check the fuel system.

Chevrolet Blazer won’t start but battery is good?

If your Chevrolet Blazer’s battery checks out OK and is fully charged, but the car still refuses to start, the underlying cause is likely electrical. Potential culprits include a bad ignition switch, broken sensor, or wiring problems. As electrical issues can be tricky, diagnosis by a professional mechanic is best. They can correctly pinpoint the specific electrical fault and have it repaired.

Chevrolet Blazer won’t start just clicking?

When you turn the key and there’s only a clicking noise but the engine fails to turn over, the most common cause is a faulty starter motor. The click comes from the starter solenoid trying to engage the starter motor, but the motor itself fails to crank the engine. As the starter motor needs physical fixing or swapping out, consult with a reliable mechanic to get your Chevrolet Blazer running again.

Why is my Chevrolet Blazer car not cranking but I have power?

If your Chevrolet Blazer doesn’t crank but the lights and electronics power on, the most likely culprits are problems in the starter motor, ignition switch, or neutral safety switch. Defective ignition components prevent the engine from turning over even when battery power is present.

Why does my Chevrolet Blazer have power but doesn’t crank?

When your Chevrolet Blazer has power to the lights and accessories but won’t crank when turning the key, the problem is often a bad starter motor or related wiring problem. This prevents the starter from engaging to turn the engine over for starting.

What would make my Chevrolet Blazer car unexpectedly not start?

Unexpected no-start issues can occur from loose battery cables, fuel pump or relay failure, broken timing belt, or an empty gas tank. These urgent issues can arise without warning and prevent your Chevrolet Blazers engine from starting.

Why doesn’t my Chevrolet Blazer car start but the battery is fine?

With a good battery, the culprit may be a faulty alternator not charging the system, bad spark plugs providing no ignition, or a fuel delivery issue preventing combustion. Your Chevy’s engine needs air, fuel, compression and spark to run.

What are signs your Chevrolet Blazer starter is bad?

Symptoms of a bad starter include no noise when turning the key, a single click but no turnover, unusual grinding sounds, and slow/labored cranking. These indicate starter failure and the need for replacement by a local mechanic.

Why doesn’t my Chevrolet Blazer start but battery and alternator are good?

If the battery and alternator check out, common culprits are bad spark plugs, blocked fuel filter, blown fuse, immobilizer issue, and starter relay failure. Thorough diagnostics of all electrical and fuel systems are needed by a qualified local mechanic.

Interesting Facts About the Chevrolet Blazer

Did you know that the Chevrolet Blazer has a hidden compartment behind the infotainment screen? It’s the perfect spot to stash your valuables or secret snacks without anyone ever knowing! And get this – the Blazer also has a nifty feature called Hitch Guidance with Hitch View, making it a breeze to hook up a trailer or camper. Plus, the Blazer comes with an available 3.6L V6 engine that packs a punch with 308 horsepower, giving you the power you need to conquer any road. With its sleek design and innovative features, the Chevrolet Blazer is sure to turn heads and make every drive an adventure. So, while you’re waiting for your Blazer to get up and running, just think about all the cool quirks and capabilities it has to offer!

Which Mechanic Suits You?

  1. Chat with an Online Mechanic to get instant, unlimited help and advice for 1 full week, for just $5.
  2. Get in-person help from a Mobile Mechanic Near You. They will come to you and fix your vehicle at a time that suits you. If there are none near you, you will be redirected to the online mechanic.

Which Mechanic Suits You?

  1. Chat with an Online Mechanic to get instant, unlimited help and advice for 1 full week, for just £5.
  2. Get help from a Mobile Mechanic. We  recommend Fixter. They will come to you and fix your vehicle at a time that suits you. Instant free quote online below. We recommend the online mechanic first, as it’s cheaper for you, and you may not need an in-person mechanic.

Which Mechanic Suits You?

  1. Chat with an Online Mechanic to get instant, unlimited help and advice for 1 full week, for just $5.
  2. Get in-person help from a Mobile Mechanic. We recommend YourMechanic. They will come to you and fix your vehicle at a time that suits you. Instant free quote online below. We recommend the online mechanic first, as it’s cheaper, and you may not need an in-person mechanic.

Choose Your Mechanic

1. Chat with A.I. Mechanic (Robot Robby)
  • Free 7-day trial
  • A.I. Mechanic that is trained by our human mechanic writers. As helpful as a human mechanic for expert advice, troubleshooting, and repair guidance.
2. Chat with a Human Mechanic Online
  • Join for just $5, and $39/month. Cancel anytime
  • Real human ASE-certified mechanics available 24/7

Which Mechanic Suits You?

  1. Chat with an Online Mechanic to get instant, unlimited help and advice for 1 full week, for just $5.
  2. Get in-person help from a Mobile Mechanic Near You. They will come to you and fix your vehicle at a time that suits you. If there are none near you, you will be redirected to the online mechanic.

Which Mechanic Suits You?

  1. Chat with an Online Mechanic to get instant, unlimited help and advice for 1 full week, for just £5.
  2. Get help from a Mobile Mechanic. We  recommend Fixter. They will come to you and fix your vehicle at a time that suits you. Instant free quote online below. We recommend the online mechanic first, as it’s cheaper for you, and you may not need an in-person mechanic.

Which Mechanic Suits You?

  1. Chat with an Online Mechanic to get instant, unlimited help and advice for 1 full week, for just $5.
  2. Get in-person help from a Mobile Mechanic. We recommend YourMechanic. They will come to you and fix your vehicle at a time that suits you. Instant free quote online below. We recommend the online mechanic first, as it’s cheaper, and you may not need an in-person mechanic.

Where Can I Find My VIN?

Your vehicle’s unique Vehicle Identification Number (VIN) can be found on the title document, the vehicle registration, and the insurance policy. It is a series letters and numbers like this as example: WAUGC0896JA235262. The VIN can also be located on the following locations on the vehicle itself:

how to find VIN on vehicle