Common questions

Why does my Silverado shake at idle?


Why does my Silverado shake at idle?

One of the most likely causes of a car shaking while it is idle is dirty or worn out spark plugs. It causes noticeable engine shaking which in turn causes the whole vehicle to vibrate. Luckily, dirty or broken spark plugs are easy to fix as replacing them is inexpensive and can be easily done by even a novice.

What causes gear rough idle?

A rough idling engine can be caused by spark plugs or spark plug wires. Spark plugs use the electrical current received from ignition coils to ignite the air/fuel mixture within the combustion chamber. A plug that is damaged or installed incorrectly can result in fuel being burned at an inconsistent rate.

What causes rough idle and loss of power?

Although you won’t see this often, an engine rough idle can be a sign of problems with the fuel pump or fuel pressure regulator. Other components in the fuel system can also cause your engine to idle rough. For example, a dirty (clogged) fuel filter, or an obstructed or bad fuel injector.

Do GMC Sierra have transmission problems?

While some GMC Sierra owners are pleased with the vehicle’s performance, others have frowned over the low-quality transmission. They have found both major and minor issues with the transmission.

Why is GMC shaking?

General Motors, it is alleged that the aluminum driveshaft or the “prop shaft”, which transfers power from the engine to the wheels, has been a leading cause for the vehicles to shake violently and deteriorate the drive shaft over time. After enough deterioration, this can cause the vehicles to no longer be driveable.

Why does my GMC Denali shake?

General Motors alleges that the “Chevy Shake” is caused by 8-speed transmissions. The 8L45 and 8L90 transmissions allegedly cause significant shaking and shuddering in some SUVs and trucks. Sometimes, the shaking is so violent that drivers feel like they have been hit by other vehicles.

Has GM fixed the 8 speed transmission problems?

General Motors has announced a new Customer Satisfaction Program for certain examples of the 2021 model year Chevy Silverado 1500 and GMC Sierra 1500 to replace the eight-speed automatic transmissions in the vehicles. These repairs will be performed at no cost to the vehicle owner.

Why does my Chevy Silverado have a rough idle?

Rough Idle Solved! Posting my results in hopes it will help someone else down the road. I’ve had a slight rough idle since around 500 miles driving the truck with it progressively getting worse over time. Had the BB Tune bump the idle up to 600 at 1000 miles and that seemed to eliminate it for the time being.

Is it normal for a Sierra 5.3 to idle?

My sierra 5.3 with about 900 miles has started to intermittently idle pretty rough especially after it has reach operating temperature. I went to the dealer and they said there was nothing wrong. They said it is normal. I don’t believe it.

Where can I find rough idle solved for free?

Rough Idle Solved! Sign up for FREE! Become a Member Today! In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs.

What does low idle feel like in a car?

This condition may be most noticeable following extended driving, after hard acceleration, while idling at a stop in Drive. May feel like a lopey or lumpy idle, or may be described as a low idle. This condition will not be present in Park, or Neutral. (There have been a few cases for rough idle in Reverse.)