Symptoms - Engine Electrical. HUMMER H2 2007

For 1990-2009 cars only

Makes 🢒 HUMMER 🢒 2007 🢒 H2 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Symptoms - Engine Electrical

Important: The following steps must be completed before using the symptom tables.

•	Perform Diagnostic System Check - Vehicle , before using the Symptom Tables in order to verify that all of the following are true:

-	There are no DTCs set.

-	The control module(s) can communicate via the serial data link.

•	Review the system operation in order to familiarize yourself with the system functions. Refer to one of the following system operations:

-	Battery Description and Operation

-	Starting System Description and Operation

-	Charging System Description and Operation

•	Inspect for aftermarket devices which could affect the operation of the Starting and Charging Systems. Refer to Checking Aftermarket Accessories .

•	Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

•	Starter Solenoid Does Not Click

•	Starter Solenoid Clicks, Engine Does Not Crank

•	Engine Cranks Slowly

•	Battery Inspection/Test

•	Charge Indicator Always On

•	Charge Indicator Inoperative

•	Charging System Test

•	Generator Noise Diagnosis