Why does my Chevy Silverado turn over but not start?

Before suspecting electrical or mechanical failures, however, ensure that the parking lever is in park and that electrical connections are clean and secure. If the engine turns over but will not start, this usually means that either the engine is not producing a spark at the sparkplugs or fuel is not being delivered to the engine.

How to get a Chevy Silverado to crank over?

1 Turn OFF the ignition. 2 Disconnect the power train control module (PCM) harness connector. 3 Connect a test lamp between the Crank Voltage circuit of the PCM harness and a good ground. 4 With the transmission in park, or clutch pedal pressed, turn the ignition switch to the START position.

How to turn off starter on Chevy Silverado?

1 Turn OFF the ignition. 2 Disconnect the PCM harness connector. 3 Connect a DMM between the starter enable relay control circuit of the PCM harness and a good ground. 4 Turn the ignition to the START position.

Why does my starter turn without turning the engine?

Starter Turns Without Turning the Engine. A starter that spins without turning the engine is caused by the starter gear failing to engage the engine’s flywheel. This usually indicates that the starter pinion is sticking and not allowing its gear to move into position with the flywheel.

Why does my Chevy 1500 turn over twice?

Okay, it’s not the ‘passlock sensor’. I reset it by leaving it in the on position for slightly over 10 minutes, turning it off for 5 seconds, and repeating 3 times. It still turns over, and dies. It did start the second time for about 1-2 seconds instead of just one turn; maybe two rotations. This has me thinking it is the fuel pump.

What to do if your Chevy Silverado won’t shift?

I have a 92′ chevy Silverado truck I got a code 24 so I replaced the VSS but it still will not go in reverse. What to do? … read more Vocational, Technical or Tra… I just put in a Used transmission 150000 Miles on it however, it does not shift into Overdrive. Plus i get a Service Engine light. on my 91 S-10 Blazer … read more

Why does my Chevy Silverado have no spark?

Common causes for no spark are a weak battery, indicated by a slow-turning starter, a faulty ignition coil or a wet ignition system. Less common problems are faulty sparkplugs, broken or disconnected coil wires or broken wires in the ignition system.

Why does my Chevy Silverado truck not start?

The starting problems of a vehicle can be different. In some cases the truck starts at least sporadically and allows its owner to drive independently to the nearest specialist workshop. In other cases, the truck won’t start until the underlying problem is solved. The nature of the starting problems depends on their cause.

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.

What causes a Chevy Silverado to turn over?

A worn distributor cap, old or broken plug wires or a worn distributor rotor can result in a weak spark at the sparkplugs, causing the engine to turn over excessively before catching.

Are there any problems with the Chevy 4.8L Vortec?

The two engines tend to have similar problems, but the 4.8 Vortec comes in at a higher reliability rating on our scale due to its lack of AFM, which is known to cause problems on just about every engine it touches. 1. Intake Knock Sensor – 4.8L Vortec

Why is my Vortec 4800 running so slow?

A cracked manifold or a bad gasket causes air leaks. When air leaks, it leaks prior to getting to the engine. When this happens, the engine doesn’t get as much air as it needs, which causes it to run rich air-to-fuel ratios and causes a number of performance related issues.

Why is my Chevy Silverado 1500 not starting?

However, today, when the truck will crank and start, the antitheft icon goes off after a few seconds with the key on and stays off while the truck is running. It never flashed either today or yesterday though. And I don’t know if the antitheft system disables cranking or starting or both.

Why does my Chevy Silverado want to turn over?

Truck wants to turn over but will act as if is starving for fuel,wait ten minutes, it start. Been happening frequently lately. I also was told it was the security system Will turn key and it is like no power from battery to starter, but have lights, radio, etc. Turn key again or sometimes multiple times, to no avail.

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 Chevy Truck start and idle?

Not sure why this test caused a better and longer gas flow than the above test of just putting the ignition in the ON position and seeing how much gas comes out of the line before the fuel filter. Last test says to start the vehicle and remove the relay.

Why does my GM Truck start so cold?

Look up piston slap to study it more its mostly from the short piston skirts that allow the piston to rock around more when cold. Also different oils help, i run moble 1 truck 5w30 in my truck with 116k on it. I have heard that gm top end cleaner and the 3m kits work well.

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 GMC engine start but not run?

Repair guides and support for cars, trucks, and SUVs manufactured by GMC. Answered! View the answer I have this problem too Is this a good question? An engine will start but not run when the fuel runs out .

How often does my GMC Truck turn over?

So far this has been the case pretty much every time i am starting the truck cold. I’ll try to start it and it will turn over for about 3-4 seconds (have tried a bit longer, still no go) then i’ll stop and try to start it again, and the second time it fires right up.

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.

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.

Why does my Chevy Silverado turn over but not start?