Operation CHARM: Car repair manuals for everyone.
Home >> Hummer >> 2007 >> H3 L5-3.7L >> Repair and Diagnosis >> Heating and Air Conditioning >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> HVAC- Manual >> Blower Motor Inoperative
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Blower Motor Inoperative



Blower Motor Inoperative

Test Description

Step 1 - Step 13:




Step 14:




The numbers below refer to the step numbers on the diagnostic table.
6. The circuit being tested is between the blower motor and the resistor.
pro multis · About Operation CHARM