In this tutorial I"ll show you just how to test the EVAP purge solenoid on the 1999-2003 V8 equipped Chevrolet Silveraperform (Submetropolitan, Tahoe) and also GMC Sierra (Yukon, Yukon XL).

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All of the test steps are defined in a step-by-step way. You"ll easily uncover out if the EVAP purge solenoid is poor or not.

You can find this tutorial in Spanish here: Cómo Probar El Solenoide De Purga EVAP (1999-2003 V8 Silverado, Sierra, Subcity, Tahoe, Yukon) (at: autotecnico-virtual.com).

APPLIES TO: This tutorial applies to the complying with vehicles:


Silveracarry out (1500, 2500):4.8L, 5.3L: 1999, 2000, 2001, 2002, 2003Silveraperform (2500):6.0L: 1999, 2000, 2001, 2002, 2003Suburban (1500):5.3L: 1999, 2000, 2001, 2002, 2003Submetropolitan (2500):6.0L: 1999, 2000, 2001, 2002, 2003Tahoe:4.8L, 5.3L: 2000, 2001, 2002, 2003


Sierra (1500, 2500):4.8L, 5.3L: 1999, 2000, 2001, 2002, 2003Sierra (2500):6.0L: 1999, 2000, 2001, 2002, 2003Yukon:4.8L, 5.3L: 2000, 2001, 2002, 2003Yukon XL (1500):5.3L: 1999, 2000, 2001, 2002, 2003Yukon XL (2500):6.0L: 1999, 2000, 2001, 2002, 2003


The following tutorial will certainly aid you test the EVAP vent solenoid:

Symptoms Of A Bad EVAP Purge Solenoid

The canister purge solenoid is an egoals manage component of the evaporative egoals (EVAP) mechanism of your V8 equipped Chevrolet Silveraperform (GMC Sierra).

The purpose of the EVAP system is to mitigate the evaporative eobjectives air pollution that is created by the fuel vapors released by the gasoline stored in the fuel tank.

The EVAP mechanism does this by trapping and then recirculating this fuel vapor right into the engine (so that it can be used as fuel). This avoids the fuel vapor from being released right into the air (environment).

The component responsible for "purging" the fuel vapor in the EVAP system right into the engine (to be used as fuel) is the EVAP purge solenoid.

How? It does so by acting as the switch that permits the fuel vapor stored in the EVAP carbon canister into the engine.

To be a little bit even more specific, the EVAP purge solenoid is in an OFF state a lot of of the time. In this OFF state, the EVAP purge solenoid stays clear of fuel vapor stored in the EVAP carbon canister from entering the intake manifold.

When the fuel injection computer system commands the EVAP purge solenoid ON, it opens up and also lets the fuel vapors stored in the EVAP carbon canister into the intake manifold.

When the EVAP purge solenoid fails, it"ll usually not have the ability to open and permit the fuel vapor to enter the intake manifold (once commanded ON by the fuel injection computer).

A bad EVAP purge solenoid typically does not reason any kind of engine performance troubles or drive-capability issues.

Typically you"ll only view one or even more of the adhering to symptoms:

The inspect engine light will be illuminated by one of the following trouble codes:P0443: EVAP System Purge Control Valve Circuit Malattribute.Pressure in the gas tank when you remove the gas tank cap.Your Silveraperform (Sierra) falls short the eobjectives test.Difficulty filling up the gas tank with fuel.

You can uncover an extra detailed explacountry of the P0443 EVAP purge solenoid trouble code here:

Where To Buy The EVAP Purge Solenoid

The AC-Delco brand is the original equipment (O.E.) component for your Chevrolet Silveraperform (GMC Sierra). Dorguy is one more trusted brand also.

The adhering to web links will certainly help you comparison shop for the EVAP purge solenoid:

What Tools Do I Need?

To test the EVAP purge solenoid, you"ll need:

A multimeter.Two jumper wires through insulated alligator clips.

The insulated alligator clips will help you prevent shorting the jumper wires together as soon as connecting them to the male spade terminal of the EVAP purge solenoid when bench-trial and error it.

You"ll require hand also tools to rerelocate the EVAP purge solenoid from its place underneath your Chevrolet Silverado (GMC Sierra).

TEST 1: Making Sure That The EVAP Purge Solenoid Is Getting Power

For our first test, we"re gonna" make certain that the EVAP purge solenoid is getting 10 to 12 Volts.

The wire that supplies this voltage is the pink (PNK) wire of its 2-wire connector.

In the photo above, the female terminal labeled through the letter A is the one that connects to the PNK wire.

OK, let"s start:

With the red multimeter test lead, gently probe the terminal labeled through the letter A.Terminal A is the one that connects to the PNK wire.

The multimeter have to register 10 to 12 Volts.

Let"s take a look at what your test results mean:

CASE 1: 10 to 12 Volts DC are present. This is the correct and meant test outcome.

The next action is to go to: TEST 2: Making Sure The EVAP Solenoid Is Blocking Fuel Vapor Intake.

CASE 2: The indicated voltage is not present. Without power, the EVAP purge solenoid will not attribute.

This is typically led to by among two things:

The ENG 1 (1999-2002) or the PCM 1 (2003) fusage is blvery own in the underhood fusage box.There"s an open-circuit difficulty in the wiring between the EVAP purge solenoid"s connector and also the underhood fusage box.

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Your following step is to inspect the fusage and also retest for the presence of 10 to 12 Volts in terminal A.