How do GM knock sensors work?
The knock sensor on your GM engine is designed to sense detonation in the engine that causes a knocking noise from an improper air/fuel/spark ratio. The sensor takes that information and sends it to the computer, which in turn retards the timing on the engine to fix the problem.
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.
What should I do if my knock sensor goes bad?
When knock sensors start to go bad, you may hear a pinging or loud knocking coming from your engine. If you ever need to bypass your knock sensors, the most direct way of doing so is to simply disconnect them.
What was the problem with my 1990 Chevy k1500?
My old 1990 K1500 had the same stalling problems until I changed the EGR valve. We have a 1990 2wd 350 tbi with similar issues. So far it has a new distributor (for an unrelated problem), idle valve, throttle position sensor, knock sensor, temperature sensor, fuel filter, plugs & wires.
What is the spark knock code on a Chevy Tahoe?
Do you have a 1999-2007 Chevy Silverado, Tahoe, Suburban GMC Sierra or Yukon equipped with a 4.8, 5.3 or 6.0 Liter LS series engine and are experiencing an illuminated check engine lamp, a stored code P0332 and/or P0327 accompanied by spark knock? Watch this video for more information. Loading…
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.
My old 1990 K1500 had the same stalling problems until I changed the EGR valve. We have a 1990 2wd 350 tbi with similar issues. So far it has a new distributor (for an unrelated problem), idle valve, throttle position sensor, knock sensor, temperature sensor, fuel filter, plugs & wires.
When knock sensors start to go bad, you may hear a pinging or loud knocking coming from your engine. If you ever need to bypass your knock sensors, the most direct way of doing so is to simply disconnect them.
Why are there knock and Ping sensors on my car?
The reason for this is the sensor generates its own voltage and is case grounded. It’s a piezoelectric automotive sensor that produces a small voltage signal when it hears internal engine noise that we often call knock and ping. This is why the location of the two sensors is a problem.