Hummer H2. Manual - part 513

3

3. Activate the mirror select switch to the left and 

right mirror positions.  

4. Activate the mirror direction switch to the UP, 

DOWN, LEFT and RIGHT positions.  

Do all of the mirror data parameters change properly 
with the corresponding switch activations?

Go to Step 4

Go to Step 6

4

With the scan tool command the inoperative mirror 
UP, DOWN, LEFT and RIGHT. 
Does the mirror move with the corresponding scan 
tool command?

Go to Step 6

Go to Step 5

5

1. Disconnect the inoperative mirror.  

2. Connect a test lamp between the appropriate 

mirror motor control circuits for the 
inoperative direction(s).  

3. With a scan tool, command the mirror in the 

inoperative direction(s).  

Does the test lamp illuminate with the corresponding 
scan tool command?

Go to Step 7

Go to Step 8

6

Inspect for poor connections at the driver door 
module. Refer to Testing for Intermittent 
Conditions and Poor Connections and Connector 
Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 12

Go to Step 9

7

Inspect for poor connections at the power mirror. 
Refer to Testing for Intermittent Conditions and 
Poor Connections and Connector Repairs in 
Wiring Systems. 
Did you find and correct the condition?

Go to Step 12

Go to Step 10

8

Inspect for poor connections at the appropriate door 
module. Refer to Testing for Intermittent 
Conditions and Poor Connections and Connector 
Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 12

Go to Step 11

9

Replace the driver door module. Refer to Switch 
Replacement - Door Lock and Side Window - 
Driver .Did you complete the repair?

IMPORTANT:

Perform the set up procedure for the driver door 
module. Refer to Service Programming System 
(SPS) in Programming.

Go to Step 12

-

Replace the power mirror. Refer to Mirror 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2

  

POWER MIRRORS - FOLDING INOPERATIVE 

Power Mirrors - Folding Inoperative 

10

Replacement . 
Did you complete the repair?

Go to Step 12

-

11

Replace the appropriate door module. Refer to 
Switch Replacement - Door Lock and Side 
Window - Driver or Switch Replacement - Door 
Lock and Side Window - Passenger .Did you 
complete the repair?

IMPORTANT:

Perform the set up procedure for the appropriate 
door module. Refer to Service Programming 
System (SPS) in Programming.

Go to Step 12

-

12

Operate the system in order to verify the repair. 
Did you correct the condition?

System OK

Go to Step 2

Step

Action

Yes

No

Schematic Reference: Outside Mirror Schematics 
Connector End View Reference:Power Door Systems Connector End Views

1

Did you perform the Door Systems Diagnostic 
System Check?

Go to Step 2

Go to Diagnostic 

System Check - 

Door Systems

2

1. Turn ON the ignition, with the engine OFF.  

2. Place the mirror select switch in the neutral 

fold position.  

3. Activate the mirror direction switch in the 

left/extend and right/retract positions.  

Do the outside rearview mirrors extend and retract 
with the corresponding switch activation?

Go to Testing for 

Intermittent Conditions 

and Poor Connections in 

Wiring Systems

Go to Step 3

3

Are both folding mirrors inoperative?

Go to Step 4

Go to Step 5

4

1. Install a scan tool.  

2. Monitor the mirror select switch and the 

mirror switch data parameters.  

3. Activate the mirror select switch left, right and 

neutral/fold positions.  

4. Activate the left/extend and right/retract 

functions from the mirror switch.  

Do all of the data parameters change with the 
corresponding switch activations?

Go to Step 5

Go to Step 6

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2

  

5

1. Install a scan tool.  

2. With the scan tool, observe the Mirror Folding 

Operation data parameter in the appropriate 
door module data list.  

3. Command the inoperative mirror to retract and 

extend using the mirror switch.  

Does the Mirror Folding Operation data parameter 
change states with the corresponding command?

Go to Step 7

Go to Step 8

6

Inspect for poor connections at the driver door 
module. Refer to Testing for Intermittent 
Conditions and Poor Connections and Connector 
Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 12

Go to Step 9

7

Inspect for poor connections at the power mirror. 
Refer to Testing for Intermittent Conditions and 
Poor Connections and Connector Repairs in 
Wiring Systems. 
Did you find and correct the condition?

Go to Step 12

Go to Step 10

8

Inspect for poor connections at the appropriate door 
module. Refer to Testing for Intermittent 
Conditions and Poor Connections and Connector 
Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 12

Go to Step 11

9

Replace the driver door module. Refer to Switch 
Replacement - Door Lock and Side Window - 
Driver .Did you complete the repair?

IMPORTANT:

Perform the set up procedure for the driver door 
module. Refer to Service Programming System 
(SPS) in Programming.

Go to Step 12

-

10

Replace the power mirror. Refer to Mirror 
Replacement . 
Did you complete the repair?

Go to Step 12

-

11

Replace the appropriate door module. Refer to 
Switch Replacement - Door Lock and Side 
Window - Driver or Switch Replacement - Door 
Lock and Side Window - Passenger .Did you 
complete the repair?

IMPORTANT:

Perform the set up procedure for the appropriate 
door module. Refer to Service Programming 
System (SPS) in Programming.

Go to Step 12

-

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2

  

POWER MIRRORS - MEMORY FUNCTIONS INOPERATIVE 

Power Mirrors - Memory Functions Inoperative 

12

Operate the system in order to verify the repair. 
Did you correct the condition?

System OK

Go to Step 3

Step

Action

Value
(s)

Yes

No

Schematic Reference: Outside Mirror Schematics 
Connector End View Reference: Power Door Systems Connector End Views

1

Did you perform the Door Systems 
Diagnostic System Check?

-

Go to Step 2

Go to 

Diagnostic 

System Check - 

Door Systems

2

1. Place the mirror select switch in the 

left mirror position.  

2. Activate the mirror position switch in 

the UP, DOWN, LEFT and RIGHT 
directions and note the operation.  

3. Place the mirror select switch in the 

right mirror position.  

4. Activate the mirror position switch in 

the UP, DOWN, LEFT and RIGHT 
directions and note the operation.  

Do both power mirrors operate properly?

-

Go to Step 3

Go to Power 

Mirrors 

Inoperative

3

1. Install a scan tool.  

2. Turn ON the ignition, with the engine 

OFF.  

3. Monitor the memory switch data 

parameters.  

Are any of the memory switch data 
parameters active without a switch 
activation?

-

Go to Step 5

Go to Step 4

4

1. Monitor the memory switch data 

parameters.  

2. Activate the memory 1, memory 2 and 

Exit switches one at a time.  

Do all of the memory switch data parameters 
change state with the corresponding switch 
activation?

-

Go to Step 7

Go to Step 6

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2