Can a bad ignition switch cause a Sierra not to start?

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Can a bad ignition switch cause a Sierra not to start?

A bad ignition switch can cause your Sierra not to start at all. And, it can keep your Sierra from starting in a couple of different ways. The first is when the starter cranks, but the bad ignition switch doesn’t turn on the fuel pump or ignition. The engine will just turn over with no spark. The second way is when the starter doesn’t turn at all.

What should I do if my Sierra does not start?

Place the black lead of the multimeter on the negative battery terminal. If the battery reads less than 12 volts, charge it or replace it. If the battery reads higher than 12 volts, the battery is not the issue. If the Sierra does not start after replacing or charging the battery, move to the next step.

Why does my battery light not come on when I start the car?

Excessive corrosion at the battery terminals can cause a low voltage condition which makes the starter turn slowly when trying to turn on your vehicle, but it will not illuminate the battery light if the alternator is charging properly once the car is started. Step 4: Secure the clamps on to the battery terminals.

How does the starter work on a GMC Sierra?

The starter in your GMC Sierra is dependent on three pieces of equipment. First, the ignition switch sends electrical current from the battery to the starter solenoid. The solenoid then forces the gear in the starter housing to engage the engine. When the starter motor turns on and spins the gear, the engine roars to life.

Why does my GMC Sierra 1500 not start?

While there are a variety of reasons your GMC Sierra 1500 won’t start, the most common 3 are a dead battery, an alternator problem, or failed starter. How is a no-start diagnosis fixed?

A bad ignition switch can cause your Sierra not to start at all. And, it can keep your Sierra from starting in a couple of different ways. The first is when the starter cranks, but the bad ignition switch doesn’t turn on the fuel pump or ignition. The engine will just turn over with no spark. The second way is when the starter doesn’t turn at all.

Why does my truck have no power at all?

When I try to start my truck I have no power at all, no lights or anything. The fog lights will come on because they are hooked directly to the battery. Any ideas on where to start looking?

Why does my GM car say no start no crank?

How to diagnose a no start no click on GM vehicle. If you have a late model GM vehicle and turn the key only to hear nothing, you’ll most likely think you have a dead battery—and you may. But a no start, no crank, no click condition can be far more involved than that.

Why does my car not start when I crank the engine?

If the engine doesn’t crank, or makes an unusual noise when cranking, you may have a starting system problem. The car’s security system may have made an error that disabled the fuel or ignition system, or the chip in the key may have failed.

Why does my car not start when I turn the key?

This condition is usually due a failed fuel pump, a failed ignition coil, a failed ignition control module, a failed crank sensor, etc… that lets the engine crank (turn over) but does not let it start. A No Crank Condition means that the engine is not turning over when you turn the key to crank the engine.

Why does my GM 4.3L engine not start?

No Start Condition Basics There are three very basic components that the engine, in your GM vehicle, needs to start and they are: Air, Fuel and Spark. When your 4.3L, 5.0L or 5.7L GM vehicle cranks but does not start, it’s because one of these components is missing from the mix.

Why does my GMC Sierra engine not start?

There are a lot of issues that can cause your Sierra to crank, but not start. The engine needs air, fuel, and a spark in order to run. It is highly likely that if the engine is cranking, but not starting that it has thrown an OBDII code.

What kind of car cranks but won’t start?

In this video we encounter a condition where a 2002 Chevy Silverado ( Similar to GMC Sierra ) pickup has a symptom of the engine cranks over but won’t start…. AboutPressCopyrightContact usCreatorsAdvertiseDevelopersTermsPrivacyPolicy & SafetyHow YouTube worksTest new features

Why does my car not start when I Turn on the ignition?

The most common causes are in the ignition (for example, a bad ignition coil) or fuel system (for example, a clogged fuel filter). However, the source may also be a mechanical fault (for example, a leaking valve), or faulty components in other systems.

What should I do if my engine won’t start?

You should see a bright spark jumping the gap in the spark tester. If you don’t see a spark, repeat the test. This time, adjust the spark tester to 30KV. If you still don’t see a spark, repeat the test and set the tester to 10KV. If this time you see a spark or no spark, you have a problem with the ignition system.

Why does my GM pickup engine not start?

How To Test The Fuel Pump On GM TBI Fuel Systems (for throttle body fuel injection fuel system equipped vehicles). A failure in one of the Passlock system’s components will cause the engine to start and then stall after a few seconds. This is due to the fact that the PCM, in your GM pickup or SUV, has disabled the fuel injectors.

How to troubleshoot a GM 4.3L no start?

Check that the 8 cylinders are getting spark with a spark tester. The distributor cap is good. The ignition coil is good. The ignition control module is good. The crankshaft position sensor is good. The distributor cap could be bad. The ignition coil to distributor cap high tension wire could be bad. The ignition coil could be bad.

What causes the fuel pump to not start?

The fuel pump is running and delivering normal pressure to the engine But, with all that working your engine still will not start. So, the most likely cause, is that the fuel injectors are probably not opening. The (PCM) uses the trigger signal from the crankshaft position sensor; and/or camshaft position sensor to pulse the injectors.

Can a bad ignition switch cause a car to not start?

If you do not have power to these pins, the ignition switch is bad and will need to be replaced. If you can narrow down the options that would explain why you can’t start the car, even if you don’t plan to make the repairs yourself, you will be better prepared to discuss it at the shop with a mechanic.

What causes a car to crank but not start?

One of the biggest issues that causes a vehicle to crank but not start is ignition issues. When there is no spark, the engine will not start. You’ll probably have a misfire related code such as P0300, P0301, etc…..

How does the ignition switch work on a GM car?

The ignition switch now talks to the body control module (BCM) and it’s the BCM that initiates one of two relays. The second relay, the more important of the two, is controlled by the powertrain control module (PCM). And it only operates the starter relay after it’s satisfied that the correct key is in the ignition.

Why does my truck keep running after the ignition is turned off?

I turn my truck off and the engine keeps running after the key is removed. The gauges all die down and the A/C turn off but the engine keeps running, until I open and close the door then it will turn off. My outside temp. and compass stay on ALL of the time now unless I unplug the harness.

Why does the ignition key stay in the ” start ” position?

Automatic column shift with cruise. When I start the truck, the key will stay in the “start” position. I have to manually turn it back to “run” so my starter won’t keep running. Also, when I turn the truck off, I now have power to accessories (radio, wipers, lights), just like I have the key turned to accessory.

How does the ignition work on a GMC Sierra?

Ignition- This position activates your ignition system and the fuel pump. At this point fuel is pressurized at the fuel rails, and the engine is ready to fire the plugs when it turns over. Starter- This position cranks the starter. Your ignition “rests” in the ignition position when your Sierra is running.

Ignition- This position activates your ignition system and the fuel pump. At this point fuel is pressurized at the fuel rails, and the engine is ready to fire the plugs when it turns over. Starter- This position cranks the starter. Your ignition “rests” in the ignition position when your Sierra is running.

Can a Silverado run without the ignition switch?

Silverado stayed running without the key in the ignition switch Hopefully someone can help me out here? I have a 2008 silverado crew cab which i am recently having problems with.

Why does the engine stay running with the key out?

Switch key to the off position and pull out, radio and stuff stays on as normal until door opens then shuts off. Every once in a while the engine will stay running along with all the other RAP features. It’s not normal. Sounds like you have a faulty ignition switch. I’d get it looked at under warranty…since you have a 2013.

Why does my Chevy Silverado have intermittent starting problems?

It started with intermittent “NO start” problems along with a host of other electrical problems around 16,000 miles. Once I thought I fixed the problem while beating on the steering column, however it turned out to just be a coincidence, as I had also rolled the truck down hill into the sunlight (heating from sun increased cab temperature).

What to do if your GMC Sierra wont start?

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Why does my GMC Silverado have no crank?

This is a fix for a known electrical issue with the 2003-2007 C/K series GM Trucks where a bad ground causes multiple issues. Such as no start, no crank, intermittent no gauges, and sometimes the theft light would stay on, and the parking lights would stay on.

Why does my GMC Sierra truck not start?

No fuses are blown and no codes show up on the computer. My mechanic friend said no power is going to the starter selenoid action wire relay(purple wire) and to get the truck to start he removed starter relay cover and manually pushed the relay making connection with key on. Could it be the ignition module?

What are the symptoms of a bad ignition switch?

We’ve compiled some of the most common symptoms of a bad ignition switch . These include stalling issues, not starting, and no power to the radio or accessories. The Sierra’s ignition switch is not what your key goes into.

Can a car start with no crank or no starter?

Yes, especially if there is a bad connection to the starter, or from the battery. Doesn’t take much juice to click the solenoid, but it takes a lot of juice to turn the starter and turn over the engine.

Is there an easy fix for a GMC ignition switch?

This is one way to fix a very complicated electrical system in the Chevrolet and GMC cars and trucks. Some are easy fixes with loose or bad electrical connections. Others involve the ignition switch itself, and others involve one of the computers that the system communicates with when starting the vehicle.

How can I Fix my Chevy Silverado ignition?

Wedge a shim in the connection and secure the new connection with hot glue, silicon or any other glue that can be fairly easy to scrap off and remove if further maintenance is required. Replace the steering column cover and that’s how you fix the ignition in your GMC Sierra or Chevy Silverado 1500, 2500 and 3500. Loading…

Why is my key not turning on my GMC Sierra?

While there are a variety of reasons your GMC Sierra 2500 HD key won’t turn, the most common 3 are a binding steering column/lock, an ignition switch issue, or a problem with the ignition key.

Where is the ignition switch on a Silverado 2000?

What I purchased was the electronic ignition switch that plugs into the lock housing (an actual wiring harness on the 2000), not the lock cylinder tumbler (I do know for sure there is no spring located in the tumbler). I’ve owned this truck for 8 yrs, bought it with 30k on it, and still love it – best truck I’ve ever owned!

What to do if your GMC Sierra 1500 wont start?

If you discover white deposits or silvery-green deposits, but no further cracks or damage, you do not have to replace the battery, just clean it. To clean the battery on your GMC Sierra 1500, you have to remove the pole cables first, which requires no special knowledge, just a little concentration, as the order is very important.

When do you Know Your GMC Sierra ignition switch is bad?

If your GMC Sierra is starting right up, but then immediately dies, that is a very good indication that the ignition switch is bad. Here’s what happens. You aren’t getting power to the ignition or fuel pump while the key “rests” in the run position.

If you discover white deposits or silvery-green deposits, but no further cracks or damage, you do not have to replace the battery, just clean it. To clean the battery on your GMC Sierra 1500, you have to remove the pole cables first, which requires no special knowledge, just a little concentration, as the order is very important.

When to replace a GMC Sierra 1500 part?

Usually the hardest part about maintaining a car or truck is searching for a reasonable source for outstanding parts. If your GMC Sierra 1500 needs maintenance, the optimum answer is installing a new first-rate replacement or OEM part to keep your car in the best shape.

What kind of starter does a GMC Sierra use?

Drove home, 78 miles worth, ran like a champ, no issues. 5.7; TBI 350; 2WD ;A/T; w/AC. Any suggestions? 38 people found this helpful. What about the starter. You would think, if it was the starter, it wouldn’t start after many attempts. It did and then ran perfectly. Need more solutions 35 people found this helpful. Your starter should be good.

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