When does a Chevy Silverado have no power?

If you put it to the floor, it won’t rev beyond 4000 RPM. At ~2500 RPM with only enough throttle to maintain speed (transmission manually shifted to 3rd gear), it will surge and hunt. In OD at 55 mph (engine speed below 2000), it runs smoothly but has no power to run up hill or into a head wind.

What’s the RPM on a Silverado that won’t Rev?

Put it into gear and accelerate, you have to give it a significant amount of throttle to get it up to speed. If you put it to the floor, it won’t rev beyond 4000 RPM. At ~2500 RPM with only enough throttle to maintain speed (transmission manually shifted to 3rd gear), it will surge and hunt.

Why is the ignition not working on my truck?

The first is a bad connection where the battery cable bolts to the stud on the underhood fuse box. The second is a faulty ignition switch. Both items are extremely common. Check the stud first, if its OK, then replace the ignition switch and see if you are fixed. Let me know if you need anything.

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 Silverado not Rev at 4000 rpm?

At 1500 RPM, it puts up 20-21 in-hg of vacuum. At 3000 RPM, it puts up ~18.5 in-hg of vacuum. It will not rev above 4000 rpm sitting in park!! If I apply more throttle, the revs will actually drop to 3800, as if a load were being applied by a dyno, and the engine will start to ping.

What kind of power does a Silverado have?

What does no power, won’t Rev mean?

In OD at 55 mph (engine speed below 2000), it runs smoothly but has no power to run up hill or into a head wind. IT WILL NOT THROW A CODE!!!! As a shot in the dark, I changed the knock sensor (cause it was cheap), no difference.

Why is my Duramax diesel engine not working?

The trucks computer keeps track of how much fuel needs to be added or subtracted from each individual cylinder to make the engine run smoothly, and this value is called the balance rate. If one cylinder is contributing too much or not as much as the rest, the cause is usually a bad injector and the cure is a replacement.

Are there any problems with the LLY Duramax?

In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring.

What causes a GM truck to lose power?

If your GM truck occasionally loses the ability to accelerate and warns you of reduced engine power, that could be caused by a faulty throttle body. While not common, this issue can interfere with your engine function and cause your vehicle to lose power anywhere from once in a while to several times in a day.

Why does my C / K 1500 have no power?

I have a ’97 k1500 with a 350 and 4l60e automatic. Assuming all things are OK with the truck, would a bad fuel pressure regulator cause it to have no power at low rpm’s?

Why does my Chevy c1500 not start up?

SOURCE: No fuel to the injectors on a 1997 Chevy c1500. can be the distributor or maybe the fuel pump let the truck sit and then turn key almost on but not enough to initiate start up and see if you hear pump in the gas tank and if thats not it, it could very well be your distributor it might be moist in the cap or button area

What happens when your Chevy Silverado engine goes bad?

So, when it goes bad, it can knock your Silverado’s air fuel ratio off. This could lead to poor fuel economy, the previously mentioned rough running engine, backfiring, a flashing check engine light, and an engine that has no giddy-up and go. 4.

What’s the idle RPM on a 99 Vortec?

Truck recently had an exhaust manifold replaced. When its cold (as in first thing in the morning), it fires right up and high-idles for a few seconds and runs fine. After the first few seconds, its idles rough. The engine struggles to keep it above 7-800 RPM.

Why does my Chevy Blazer have no power?

If not that code then your problem is most likely the cheap plastic distributor that GM installed for that year. Take off that expensive cap and see if the shaft jiggles. It is better to remove the distributor to inspect it. AutoZone sells a lifetime warranted Distributor for about $90.

What happens if your car has no power?

If it shorted out, it will pull enough current to overload (and possibly damage) the alternator and cause enough drag to kill the engine. It won’t jump start either. The engine of the other car will slow down, and the jumper cables will heat up.

Why does my Vortec 5300 engine not start?

A faulty fuel pressure regulator can lead to your truck either getting too much fuel, or too little fuel. The result in both instances can be misfires, poor idling, loss of power, engine shakes during acceleration, and more. On the Vortec 5300, one of the most common symptoms is hard starting, or trouble starting the car.

How many engine variations does a Chevy Vortec have?

The engine went through two different variations during its lifespan, Gen III and Gen IV. Across both generations the Vortec 5.3 had 10 different engine variations used across the Silverado, Sierra, Suburban, Avalance, Yukon, Tahoe, and a number of other less popular Chevy and GMC vehicles.

What’s the mileage of a Chevy Vortec 5.3?

Before we dig into the common problems, let’s talk about engine reliability. The Vortec 5.3 is widely regarded as extremely reliable, with most engines having a lifespan within the 200k-300k mileage range.

What is the VIN code for a Chevy Vortec 5.3?

Across both generations the Vortec 5.3 had 10 different engine variations used across the Silverado, Sierra, Suburban, Avalance, Yukon, Tahoe, and a number of other less popular Chevy and GMC vehicles. Vortec 5300 Gen III Engine Codes: LM7 (1999-2007, vin code ‘T’) L59 (2002-2007, vin code ‘Z’)

Why is the ignition on my Chevy truck not working?

It is part of the electronic ignition system because when I disconnect the ignition bypass wire, the engine runs fine, no hesitation, smooth, etc. and I plug it back together, it runs awful. My truck had symptoms years ago, such as not idling well and at times run bad, but run good after shutdown and restart.

Can a PassLock system failure cause a no start?

Passlock system failures are a very, very common cause of no start conditions. OK, the list of possible things that can go wrong looks pretty long but it is rare to see (or have) two different components go bad from two separate systems at the same time.

What causes a Chevy C / K to stop running?

A leaky fuel pump will drain the line up to the carb, but about 15 seconds of cranking will fill the line again. 2. A sticking mechanical choke or a bad electric choke. Try; when you return to your truck from the Quicky Mart, put the accelerator slowly all the way to the floor, let your foot up slowly and then crank the engine.

How to troubleshoot a no start GM 4.3L pick up?

Testing a Cranks but Does Not Start condition on your GM 4.3L, 5.0L, 5.7L pick up, van or SUV is not that hard to do, if you have a solid diagnostic strategy. In this article I’ll show you the basics of testing such a problem.

What are the symptoms of a Chevy Vortec engine problem?

Symptoms of Failing Idle Control Valve and Throttle Position Sensor 1 Rough idling 2 Engine stalling 3 Hesitation during acceleration 4 Hard shifting and lack of power 5 Lack of accelerator responsiveness 6 P0122 engine code (TPS sensor)

When does a Chevy Silverado have no power?