Why does my Chevy Silverado make a knocking noise?

It seems to only have been heard/felt when going over an elevation change or when the suspension was unloading. Ive also heard it when pulling slowly into the driveway. I’ve taken it to Chevy twice so far and described the noise coming from the front end. They stated that they checked the whole front end and everything is tight.

Why does my GMC Sierra make a noise when I Shift?

That’s a comon problem for that body style. If there good, sounds like it could be that motor itself. To figure out if it’s you motor or transfercase, jack up the rear end, have a friend inside shift into 4 wheel drive, or try to, and put it in gear and apply some gas. If the front driveshaft is turning then it’s something with the front end.

Why does my Pontiac G5 make a noise?

This noise will typically occur when the front suspension is returning to the upward position after a hard downward stroke, such as after driving through a large rut or pothole. This condition may be caused by the jounce bumper slamming into the upper spring seat because it is not retained in the correct up position.

What causes a Silverado front end to clunk?

Turns out that the bushing at the end of the cross-member where the rear of the torsion bar mounts is loose (see photos). The torsion bar is firm in the cross-member, but there is alot of movement and knocking in the connection where the cross-member attaches to the frame. The cross-member moves up and down when I lift the vehicle from belos.

65 people found this helpful. for a piston slap you need to pull apart the motor and possibly either re-bore the cylinder with the bad piston or replace the entire block be cause of the damage done to the piston and the cylinder as the piston “slapped” against the walls of the cylinder most likely gouging the cylinder walls

What causes a sharp knocking noise in the engine?

Cam gear noise will usually be evident at a warm idle in neutral and sounds much like a loose timing chain noise. Piston pin, piston, and connecting rod noise are hard to separate. A loose piston pin, for example, causes a sharp double knock usually heard when the engine is idling, or during sudden acceleration then deceleration of the engine.

What’s the knocking noise coming from MY Suburban?

I recently ran into this same knocking/ ticking issue coming from my 2005 Suburban, 5.3 Vortec. After countless hours of research, multiple engine flushes, oil change, air filter, valve adjustment…etc etc etc…my solution and problem were relatively simple.

What are the most common GMC truck problems?

One of the most common 2007-2013 GMC and Chevy truck problems owners experience is excessive oil consumption. This problem led vehicle buyers to launch a class-action lawsuit against GM, which alleged 2010-2013 vehicles with Generation IV 5.3 Liter V8 Vortec 5300 engines were defective.

What are the symptoms of a bad knock sensor?

Bad knock sensor symptoms 1 A failed knock sensor will register a trouble code and illuminate the Check Engine lamp (CEL), although some engines… 2 Misfire 3 Vibration, especially at highway speed 4 Thumping or knocking noise from the engine 5 Poor fuel economy and acceleration More

What happens when you knock on your engine?

When this happens, there’s a tiny shockwave that occurs around that explosion (along with the normal detonation from the spark plug), which greatly increases the pressure in the cylinder. In extreme cases, knocking can result in catastrophic damage to the engine, including cavitation or even perforation of a piston crown. Source | Ryan Gsell/Flickr

What was the problem with my GMC pickup truck?

Specifically, the lawsuit claimed the active fuel management (AFM) system, piston rings and PVC system in these vehicles were faulty and caused excessive oil consumption, as well as premature spark plug degradation and engine malfunction.

Are there any issues with my GMC Silverado?

Another common issue with 2007-2013 Silverados and Sierras is that the fuel level sensor stops working. After approximately 120,000 miles, the fuel gauge may start misreading the fuel level or working inconsistently. You might find it always reads empty even right after you fill up the gas tank. It might also jump between full and empty.

What kind of noise does a GM Truck make?

An easy way to test is accelerate to about 15 mph then ease off the gas so you’re still in it but just enough to maintain speed. If it’s the front diff you’ll hear a very low hollow kinda howling noise. Hope this helps.

What kind of noise does front suspension make?

Noise in front suspension ( 05′ z71 ) when turning wheel to the left. Major Vibration?!?!

Why does my Chevy Silverado make a noise when I stop?

A steady whine from the front that is best heard while stopped or during low speed turns. With the steering wheel straight, the whine may be null or low, but the noise increases noticeably when the steering wheel is turned. This is often caused by low power steering fluid, which indicates a leak that must be corrected.

Noise in front suspension ( 05′ z71 ) when turning wheel to the left. Major Vibration?!?!

Where does the lifter sound come from on a Chevy Silverado?

You can hear lifter click best around the top of the engine, and isolate the noise with a stethoscope against the valve cover. It will occur at idle and increases as you rev the engine, continuing even when the engine is warm. Valve lifter noise is detrimental and should be addressed quickly.

Why does my front wheel make a popping noise?

The front hubs arent really a hub anymore the CV axle simply is splined into the bearing so power can be spent to the Front wells. This allowed for ease of use and less parts to screw up. So id lean twards something being messed up in the front other than the hub if ou dont haver the hum. Interesting, thanks for your help Murdog.

When does a car make a knock noise?

Some of the above vehicles may exhibit an engine knock noise that begins in the first several thousand miles/kilometers of use. The knock noise is most often noticed during initial start-up and typically disappears as the engine warms up.

What kind of engine noise does a 94 Silverado make?

I wanted to add my recent experience to this thread…I recently purchased a 94 Silverado with the 4.3L balance shaft design. 139k miles and 180psi on all cylinders. Loud rattling noise just over 1K rpms.

What makes a Chevy Silverado make a knocking noise?

For the first 30 to 60 seconds after a cold start, the short-skirted pistons rock inside the cylinders and slap against the cylinder walls, sounding rather like a diesel engine. The knocking can be heard around the top of the engine, but is much louder if you listen in the front wheel wells or beneath the truck.

What kind of car makes a loud knocking noise?

I have an 06 1500 Z71 4wd with 73k miles. I’ve put 8,500 miles on it and it just started knocking. Started out light and has gotten worse. Does it whether it is cold or hot.

When does the engine knock noise go away?

Some of the above vehicles may exhibit an engine knock noise that begins in the first 19,000-24,000 km (12,000-15,000 mi) of use. The knock noise is most often noticed during initial start-up and typically disappears within the first 5-30 seconds (may last longer in extreme cold temperatures).

How do you remove a Chevy knock sensor?

Unplug the wiring harness from your vehicle’s knock sensor once you have found it. Loosen and remove the retaining bolt holding your knock sensor. Remove the knock sensor. “Sensors and Tranducers”; Ronald K. Jurgen; 2003 “Understanding Automotive Electronics (Sams Understanding Series)”; William Ribbens; 2002

I have an 06 1500 Z71 4wd with 73k miles. I’ve put 8,500 miles on it and it just started knocking. Started out light and has gotten worse. Does it whether it is cold or hot.

What are the common problems with Chevy Silverado trucks?

Among them the RF hub and bearing is failing and the wheel is about to fall off, the rear brakes at shot, the front inner tie rod ends are loose, it’s low on coolant, the front differential seals leak gear fluid and the LF exhaust manifold is leaking and bolts are broken off in the head (not shown).

How to replace knock sensors on a Chevrolet Silverado?

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What’s the clicking sound on a GM Truck?

When I have heter on and it is clicking, if I push the REC button it stops, but in that position, if I turn the heater/fan off the clicking starts again for the 30 sec.? Anyone have any imput on this. Thank you in advance …….Sherrie

Why does my 4 wheel drive make a clacking sound?

The clacking sound usually manifests itself when non-permanent vehicles engage 4WD mode. This is because part-time four-wheel-drive trucks are usually driven in 2H mode in the city and on high-traction tar roads. When in 2H the front axle is disengaged and it is only the rear driveshaft that is propelling the vehicle forward.

What makes a clunking noise under the floor?

Im getting an intermittent popping/knocking/cluncking noise felt under the driver’s side floor right under my feet. It seems to only have been heard/felt when going over an elevation change or when the suspension was unloading.

Where can you hear the knocking of the engine?

The knocking can be heard around the top of the engine, but is much louder if you listen in the front wheel wells or beneath the truck. After a few minutes, engine heat closes the piston/cylinder tolerances and the knock goes away.

Are there any problems with my Chevy Silverado?

Chevrolet Silverado owners have reported 18 problems related to engine clicking and tapping noises (under the engine and engine cooling category). The most recently reported issues are listed below. The contact owns a 2008 Chevrolet Silverado.

What causes the Chevy Silverado 1500 to shake?

See all problems of the 2017 Chevrolet Silverado 1500 . The truck shakes at speeds of from 35 mph, then it stops and when driving on the highway at speeds between 60 and 70 on the thruway it shakes again. The vibration is transferred through the gas pedel and into the seats and console.

Are there any problems with the Chevy Silverado 1500?

Chevrolet Silverado 1500 owners have reported 8 problems related to suspension noise (under the suspension category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Chevrolet Silverado 1500 based on all problems reported for the Silverado 1500.

Why does my Chevy Silverado make a rattle noise?

Chevy Silverado Making a Rattle Noise , Replacing A catalytic converter. This Chevy Silverado truck had a very loud rattle noise, that sounded like it was coming from the transmission . The 5.3 Chevy Silverado has two catalytic converters and the inside of one has came loose. The catalytic converter is still working but very loud.

Why does my car make a loud knocking noise?

9 people found this helpful. The noise is camshaft/lifter roller damage caused by the plastic lifter guide worn on one lifter allowing the lifter to ever so slightly rotate causing the roller to dig into the cam lobe and gaulding both surfaces.

What kind of engine does a Chevy Silverado have?

The initial run of the Chevy 5.3-liter V8 comes in the third generation of Chevy’s small-block V8 engine. For marketing purposes, this engine is known as the Vortec 5300. As we mentioned before, it first became available in 1999. You’ll find this engine in the Chevy Silverado and Avalanche as well as the GMC Sierra.

When did the Chevy 5.3 liter V8 come out?

Why is my Chevy Silverado having engine problems?

A leak in the exhaust before reaching the catalytic converters also results in possibly excessive untreated emissions. The exhaust leak may or may not pose a fire hazard. The contact owns a 2015 Chevrolet Silverado 1500. While driving 45-60 mph, the vehicle vibrated, shook, and struggled to accelerate. There were no warning indicators illuminated.

What kind of engine does a Chevy Silverado wt have?

Silverado WT lives up to the legendary Chevrolet name stamped on the grille and tailgate. Its work truck résumé starts with the rock-solid power of a standard 4.3L EcoTec3 V6 engine. You can also choose the available 2.7L Turbo or 5.3L EcoTec3 V8.

What causes engine knock on Duramax 6600 V8?

UPDATE Issue found. $106 in diagnostics and it is the #7 injector i just replaced, Its faulty. The knock goes away when they increase power demand on the injector at idle.

Are there any issues with my Chevy Silverado?

Never had issues as long as I treated them right. the 57 Ford refused to break, the 51 Plymouth kept spinning rod bearings. Beat you vehicle, and keep shelling out money. 14 people found this helpful.

What do I do if my Chevy Silverado makes a ticking noise?

Once the noisy cylinders have been located, the head will have to come off next. This involves removing the intake, exhaust manifolds, rockers and stands, sensors and wiring, accessories, etc. Actually it isn’t that bad of a job to take one of these engines apart, and I always do this with the engine still in the truck.

What does the left front end of a Chevy Silverado sound like?

Left front axle. Sounds like the end attached to the differential. I don’t think it’s the CV – I’m familiar with the sound of failure from those on other vehicles. The sound is clearest at :38, 1:20, 2:00 and 3:49 in the video. I cut the engine a few times to eliminate that sound distraction but I’m afraid the wind noise interferes periodically.

What makes a loud grinding noise under acceleration?

Re: Loud grinding noise under acceleration. .. Kinda sounds like a Sprague or a drum in the tranny. May not hurt to have them guys hear it. Had that happen in my ’91 1500 2wd. but that was from shock load from spinning. Noise was like a really angry ratchet when the truck was rolling.

Why does my Chevy Silverado whine when I accelerate?

The power steering pump is a very common reason why your Chevy Silverado might whine when accelerating. If it gets too low on fluid they’ll make the it’ll whine a lot. You need to check the fluid level and fill it back up to the factory fill line.

Why does my GM Truck make a noise when I accelerate?

Crawl underneath and try to turn the driveshaft. It should turn all the way around with minimal effort. If it will not, again, most likely bad U-joint. Rear end noise travels to the front. I changed my wheel bearings because I thought they were the problem.

What causes a loud grinding noise when making a turn?

Cause: Posi chatter due to improper lubrication; worn clutches or spider gears; improper assembly Noise:Banging, crunching, or popping while making a turn. Noise not affected by temperature Cause: Badly worn or broken spider gears Noise:Banging or heavy clicking every two to three feet during acceleration and deceleration

Why does my rear differential make a whirling noise?

Rumbling and whirring noises at speed over 20 mph, moreover, can be the result of worn carrier bearings. For vehicles with C-clip axles, the rear differential noise may change at different turns.

Where is the knock sensor on a Chevy 6.0?

In Chevy 6.0 engines the knock sensor sits underneath the intake manifold in the lifter section. The sensor is responsible for measuring engine vibrations and detecting if there are any unusual vibrations, aka if any “engine knock” is occurring. Engine knock happens when a gasoline burns unevenly in a cylinder.

Why is my rear end clunking when I stop?

There’s nothing wrong with the rear axle, it’s the slip yoke in the rear of the T-case like Spitz already mentioned. There were multiple TSB’s for this issue which included an updated nickle plated yoke. Greasing it will fix it temporarily but changing the yoke to the new design will fix it permanently.

What causes a howling noise in the rear of a car?

Cause:Worn rear pinion bearing or worn gear set Noise:Howl without whir or rumble while accelerating at any speed (gears previously quiet) Cause:Worn gear set due to lack of lubrication or overloading Noise:Howling while accelerating over a small speed range (gears previously quiet) Cause:Worn gear set due to lack of lubrication or overloading

Why does my car make clunking noise when I make a turn?

Noise: Banging or clunking while making a turn, backing up, or rapid deceleration (like on a freeway off-ramp). Noise gets worse in warmer weather Cause: Posi chatter due to improper lubrication; worn clutches or spider gears; improper assembly Noise:Banging, crunching, or popping while making a turn. Noise not affected by temperature

What causes low pitch rumble at 20 miles per hour?

Cause:Faulty gears or improper installation Noise:Low-pitch rumble at all speeds over 20 miles per hour Cause:Worn carrier bearings Noise:Whirring during acceleration/deceleration at about 10 miles per hour Cause: Worn pinion bearings See Also: Ask Away! with Jeff Smith: How to Fix Driveline Vibrations by Adjusting Pinion Angle

How to avoid GMC lifter noise on YouTube?

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Why does my car make a knocking noise when I Turn on the engine?

A damaged or worn connecting rod bearing will produce knock under all speeds. During the early stages of wear, connecting rod noise may be confused with piston slap or loose wrist pins. Connecting rod knock noise increases in volume with engine speed and is at its loudest on deceleration.

Why does my Chevy Silverado make a clicking noise?

I have the same clicking noise on a 2005 with a 5.3. The stethoscope tells me it is inside the oil pan near the back. It is directly related to RPM. Oil pressure is fine and I drive it everyday but the noise is irritating 84 people found this helpful. Guys! Ive had the same problem for quite a while.

What causes engine knock on a 4.3L Vortec?

Engine knock can be caused by a ton of factors, such as low-grade fuel, bad spark plugs, carbon build-up, etc. Engine knock is terrible for your engines internals and can cause serious damage to the pistons and to the cylinder walls. On the 4.3L vortec, the cause of the engine knock has not necessarily been figured out, still to this day.

What happens when a knock sensor goes bad?

It detects any engine noises caused by detonation — when fuel explodes in an engine’s cylinder– and adjusts ignition timing accordingly. If the knock sensor malfunctions, detonation is not properly regulated and major engine damage can occur.

What was the loud cold start knock that went away?

A few months ago my nephew went to a quick oil change place and they talked him into a “engine cleaning”. They added it to his oil, ran it for 15 minutes, drained the oil, changed the filter and refilled with oil. On his way home, the truck with 101,000 miles on it threw a rod, popped it right out of the side of the block.

Why does my car have a bad knock sensor?

If left unchecked, this bad combustion could ruin parts of your engine. Engine knock can also be cause by bad fuel, so if you hear it, try getting better gas next time. When spark knock is present, the knock sensor sends a signal to the vehicle’s computer.

Why does my engine knock when I Turn on the engine?

Engine knock can also be cause by bad fuel, so if you hear it, try getting better gas next time. When spark knock is present, the knock sensor sends a signal to the vehicle’s computer.

Why is my lifter making a loud knocking noise?

The noise is camshaft/lifter roller damage caused by the plastic lifter guide worn on one lifter allowing the lifter to ever so slightly rotate causing the roller to dig into the cam lobe and gaulding both surfaces.

What kind of car is a 2005 GMC Sierra?

Sierras are available in half-ton 1500, three-quarter-ton 2500HD and one-ton 3500 forms. No regular 2500 series is offered in 2005, but a 1500HD has been added.

What did GM do about the Chevy Shake?

Two new shocks and an entire rear axle later, the truck was still shaking and a GM engineer was brought in to take the truck for a seven-day period. At this point, GM agreed to buy back Maratea’s truck in exchange for a new one. Maratea ended up in a 2015 Silverado, which he says also has a very mild vibration.

Why does my car make a knocking noise when I Turn on the heat?

This noise may be caused by an interaction between carbon that has formed on the piston, the piston motion and the cylinder wall. GM Powertrain Engineering, and an analysis of engines with this condition, has confirmed that the noise is not detrimental to the performance, reliability or durability of the engine.

When does a truck make a humming noise?

The noise has started to occur in drive at low speeds, but only during sharp LEFT turns. I can now replicate the noise nearly 100% of the time if the truck is on any degree of incline when making sharp left turns. I have noticed a humming sound from the front wheels at highway speeds (wheel bearings).

Why does my Chevy truck clunk when I turn?

Mine in the 2010 is different and there is a huge cv looking boot and u-joints on it that were clunking on me. I replaced and it went away. I would presume you got the “updated” version if you replaced your intermediate shaft so would not suspect it to be bad. It could be that something is shifting in the suspension and making the clunk.

Piston slap is caused when there’s too much space between the piston and the cylinder wall. The piston moves up and down in the cylinder and the extra clearance results in a greater amount of rocking in the cylinder, producing a loud knocking noise. Specific models include (but may not be limited to): Chevrolet Silverado,…

The piston moves up and down in the cylinder and the extra clearance results in a greater amount of rocking in the cylinder, producing a loud knocking noise. Specific models include (but may not be limited to): Chevrolet Silverado, Tahoe and Suburban, GMC Sierra, Yukon and Yukon XL. Can Piston Slap damage my engine?

When does a GM engine make a noise?

GM spokeswoman Deborah Frakes states: “the only known effect of this condition is an audible sound that typically occurs during the first five to thirty seconds after starting” and that “the condition does not create any degradation of durability, performance or safety.”

What causes a car to slap the wall?

What you may be suffering from is the now infamous phenomenon known as Piston Slap. What is Piston Slap? Piston slap is caused when there’s too much space between the piston and the cylinder wall.

Are there any knock sensor problems on GM trucks?

Knock Sensor Problems on GM Vehicles. Knock sensor problems are common on 1999-2007 Chevy Silverado, Express Van, Tahoe and Suburban trucks. Of course, this means that the GMC Sierra and Yukon of the same years have the same issues.

Why does my Chevy 6.0 engine make noise?

Apart from the noise, you can also get a sign of it from the check engine light. Solution: To solve the problem, start with checking out the knock sensor of your engine. Due to a bad knock sensor, the engine computer receives faulty signals even when there is no actual knocking in it.

Why does my Chevy 6.0 engine Keep Knocking?

The reason for this problem can be a number of occurrences. But the most usual cause is the engine knocking system failure. Engine knocking takes place when the fuel (gasoline) starts to burn unevenly in the cylinder chamber. As a matter of fact, this fuel is supposed to burn in an order of pocket by pocket.

Where does the rattling noise come from in a truck?

On the way home I stopped at a traffic light and noticed an unusual “dull sounding rattling” noise coming from the firewall/floor/engine area. The noise only happens at idle speed, as soon as you touch the accelerator it goes away completely.

Why is my Chevy Silverado making a clunking noise?

A loud clunk from the front end during low speed turns, which is particularly noticeable on unimproved roads. The clunk vibration travels up to the steering wheel, particularly while turning the wheel. GM has released numerous TSBs, either calling to grease or replace the intermediate steering shaft.

Where does the clunk come from in a 4 wheel drive car?

Heard a pop and clunk from underneath me. Now every time I go into gear reverse or drive I hear a loud clunk coming from the front half of the t case. 4 wheel drive low high and auto work. Driving down the road she is smooth and the trans shifts fine.

Why does my oil pump make a loud knocking noise?

If you look at your oil pressure and it reads anything under 40 at cold start idle this means your oil pump screen has one of two things: 1) It is clogged and needs to be cleaned, these things are pure metal so a costly replacement wouldn’t be worth it, a simple clean will suffice.

Why does my Chevy Silverado make a knocking noise?