P0507 is a relatively typical OBDII problem code. It is commonly triggered when the engine idle speed is 200 rpm or an ext over the predetermined limit collection by the manufacturer. It is a share code, which method that it has actually the same for the Chevy Trailblazer as any other vehicle.

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P0507 Symptoms

Unlike many OBDII problem codes, P0507 will typically be noticeable to you once driving. Right here are the typical symptoms for the Trailblazer:

Service Engine quickly Light– The factor why you space here. Faster Idle Speed– Assuming that the code has been thrown because of a legit issue, friend should notification the engine running much faster when no pushing the gas. Thud Going into Drive– Transmissions really don’t prefer to change from park to journey at an RPM higher than idle. It is typical to feeling the whole automobile jerk when put into gear with P0507. Vehicle Takes off Faster– with the engine idling higher, civilization report emotion the auto take off when releasing the brake pedal. This deserve to make driving much more dangerous.

Chevy Trailblazer P0507 Causes and also Diagnosis

There are a lot of potential causes to P0507. If the code particularly mentions the “Idle Air control System”, it would be a failure to simply go ahead and also replace it there is no a little due diligence. The Idle Air regulate Valve is often not the reason of the code.

Here are some of the most common causes of P0507 in the Chevy Trailblazer, and also waist to troubleshoot them. Save in mind the there are distinctions in design years. It would be a great idea to start by in search of a vacuum leak and also move front from there.

Vacuum Leak

A leaking vacuum device will often cause the Trailblazer to idle higher. When the vacuum system leaks, it allows extra air to go into into the burning chamber. This air enables for a slightly higher combustion, increases the RPM and throws the code.

How to find a Vaccum Leak in a car (Popular Mechanics, Article) how to uncover a Vacuum Leak in about a Minute (2CarPros, YouTube)

A vacuum leak deserve to come from negative vacuum hose, the intake manifold, EGR System, or about anywhere else the air operation through. It’s not difficult to find a vacuum leak though. Use the resources over and you’ll discover it in no time.

Idle Air regulate Valve

Most modern fuel injected engines are equipped v an idle air regulate valve. Not every one of them space though. If girlfriend have identified that you don’t have actually a vacuum leak, the IAC is a great second location to troubleshoot P0507.

A typical Idle Air control Valve

How to Diagnose one IAC Valve (Autozone Guides)

Throttle Body

A accelerator body opens and closes countless times in the life the a vehicle. All of the air that passes v it can slowly reason it to collection grime. This grime can readjust the idle characteristics of the vehicle. Once dirty, you’ll often feel the vehicle practically stall before the computer system compensates and opens it a little more.

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A typical Throttle human body

Alternatively, if the throttle body has actually been damaged, it might not be properly regulating air flow, and also the code might be thrown.

Signs your Throttle human body Is going Bad, and also What to perform (Repair Pal) how to tell if her Throttle human body is Dirty or negative (YouTube Auto Repair, Youtube)


P0507 is a serious issue. Because of the unsafe nature the driving through an engine that is revving greater than it’s an alleged to, we recommend having actually your Trailblazer serviced as quickly as possible. Great luck!