Blower Motor Test (1994-2003 2.2L Chevy S10, GMC Sonoma)

TEST 2: Applying Power And Ground To The Blower Motor

In this test section, we're gonna' make sure the blower motor runs by directly applying battery power and Ground to it.

Depending on how accessible the blower motor is on your specific Chevy S10, you may be able to test it without removing or you'll have to remove it (to test it).

You can make your own jumper cables to apply battery power and Ground to the blower motor.

OK, let's get started:

1. 1

   Disconnect the blower motor from its electrical connector.

2. 2

   Apply battery power to the blower motor. You'll be applying power to the connector of the blower motor itself.

3. 3

   Apply chassis Ground to the blower motor. You'll be applying Ground to the connector of the blower motor itself.

4. 4

   The blower motor should run.

Let's take a look at your test results:

CASE 1: The blower motor ran and ran without any bearing noise. This is the correct test result.

If your Chevy S10 or GMC Sonoma's blower motor passed the amperage draw test (in TEST 1), then you can conclude that the blower motor is NOT defective.

CASE 2: The blower motor ran with a lot of bearing noise. This test result tells you that the blower motor is defective and needs to be replaced.

CASE 3: The blower motor did not run. This test result tells you that the blower motor is defective and needs to be replaced.

More 2.2L GM Tutorials

You can find a complete list of 2.2L Chevy S10 (GMC Sonoma) tutorials in this index:

• GM 2.2L Index Of Articles.

Here's a small sample of the tutorials you'll find in the index:

• How To Test The Throttle Position Sensor (1998-2003 2.2L S10 and Sonoma).
• How To Test The Throttle Position Sensor (1995-1997 2.2L S10 and Sonoma).
• Oxygen Sensor Heater Test -P0141 (2.2L Chevy S10 - GMC Sonoma).
• How To Test the MAP Sensor (GM 2.2L) (at troubleshootmyvehicle.com).