How to test the electronic throttle body on a GMC Envoy?

This tutorial will explain how to test the electronic throttle body on the 2002-2007 4.2L Chevrolet TrailBlazer and GMC Envoy. You’ll be able to find out if TPS 1 or TPS 2 is defective or not. We’ll also test the throttle actuator motor.

When does the electronic throttle body sensor fail?

Since the electronic throttle body is a critical component of the engine’s management system, when one of its throttle position sensors fail you’ll see one or more of the following trouble codes. P0121: Throttle Position Sensor (TPS) Sensor 1 Perfomance.

What is the throttle position sensor on a Chevy Trailblazer?

P0223: Throttle Position Sensor (TPS) Sensor 2 Circuit High Voltage. P2135: Throttle Position Sensor (TPS) Sensor 1 And 2 Correlation. Your Chevy TrailBlazer or GMC Envoy will run in Reduced Engine Power mode.

How does the throttle position sensor work on a car?

This vital sensor allows your engine to maintain a proper amount of air. This feature is dependent on the throttle valve. When you press down on the gas pedal, your throttle body unit’s valve opens. This causes your throttle position sensor to adjust the engine intake manifold accordingly.

What kind of engine does GMC Envoy have?

The Envoy comes in two sizes: regular and extra-long. The standard-length Envoy is a compelling alternative to the Ford Explorer and other mid-size SUVs. Smooth, stable, and responsive, the Envoy comes with a smooth, powerful inline six-cylinder engine that gives up nothing to the Explorer, even when the Ford is equipped with its optional V8.

How tall is a 2005 GMC Envoy SLT?

Exterior Length 191.6 ” Body height 71.9 ” Wheelbase 113.0 ” Curb 4,594 lbs. Gross weight 5,750 lbs.

Which is better GMC Yukon or GMC Envoy?

Some buyers see the XL as a less-expensive alternative to the full-size GMC Yukon. Indeed, the Envoy XL is actually longer than the Yukon. Envoy XL can carry seven passengers, and an optional V8 engine is available. Its third row adds versatility.

Who is the owner of the 2005 GMC Envoy?

2005 GMC Envoy/Envoy XL/Envoy Denali Owner ManualM GENERAL MOTORS, GM, the GM Emblem, GMC, the GMC Truck Emblem and the names ENVOY, and DENALI are registered trademarks of General Motors Corporation. This manual includes the latest information at the time it was printed. We reserve the right to make changes after that time without further notice.

How many cylinders does a GMC Envoy have?

A typical GMC motor will have 4.2-liter engine components and six cylinders. Units that were manufactured in 2007 for a basic automobile will have different specs because these products usually have 5.3-liter components.

When did I Buy my GMC Envoy SLT?

Purchased a Pre Owned Certified 2005 GMC Envoy SLT, in 2008. In 2010 had to replace Cam Shaft sensor, (this was early warning of problem to come). A few months ago had misfire cylinder 2, replaced the coil & plug, code cleared engine light off. Problem resolved or so I thought. Last month misfire cylinder 4, replaced coil & plug, still misfire.

What kind of housing does GMC Envoy have?

All GMC Envoy products that have standard or vintage components are designed with a metal housing. To protect a product before its placed under the hood, you must keep water off the housing.

How to test the electronic throttle body on a GMC Envoy?