Hummer H2. Manual - part 2439

4

2. Inspect the torque converter clutch pulse 

width modulation (TCC PWM) solenoid 
valve for the following conditions: 

z

Internal malfunction, such as sediment 
or damage  

z

Damaged seals 

Refer to Torque Converter Clutch 
Pulse Width Modulation (TCC 
PWM) Solenoid, TCC Solenoid, and 
Wiring Harness . 

Did you find and correct the condition?

-

Go to Step 14

Go to Step 5

5

1. Inspect the 1-2 shift solenoid (SS) valve for 

the following conditions: 

z

Internal malfunction, such as sediment 
or damage  

z

Damaged seals 

Refer to Shift Solenoid Leak Test . 

2. Inspect the 2-3 shift solenoid (SS) valve for 

the following conditions: 

z

Internal malfunction, such as sediment 
or damage  

z

Damaged seals 

Refer to Shift Solenoid Leak Test . 

3. Inspect the 3-2 shift solenoid valve assembly 

for the following conditions: 

z

Internal malfunction, such as sediment 
or damage  

z

Damaged seals 

Refer to Shift Solenoid Leak Test . 

Did you find and correct the condition?

-

Go to Step 14

Go to Step 6

Inspect the valve body assembly for the following 
conditions: 

z

Stuck regulator apply valve  

z

Scored regulator apply valve body 

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E Diagnosis (DTC P0218 To DTC P2771) - Hummer H2

 

6

Refer to Control Valve Body Disassemble 
in the 4L60-E section of the Transmission 
Unit Repair Manual. 

 
Did you find and correct the condition?

-

Go to Step 13

Go to Step 7

7

Inspect the torque converter assembly for the 
following conditions: 

z

Front stator shaft bushing for wear  

z

Stator roller clutch not holding  

z

External damage/leaks 

Refer to Torque Converter End Play 
Inspection . 

 
Did you find and correct the condition?

-

Go to Step 13

Go to Step 8

8

Inspect the oil pump assembly for the following 
conditions: 

z

A stuck converter clutch valve  

z

The converter clutch valve is assembled 
backwards  

z

A mispositioned converter clutch valve 
retaining ring  

z

A cocked converter clutch outer valve spring 

z

A mispositioned pump to case gasket  

z

Restricted orifice cup plugs  

z

Damaged orifice cup plugs  

z

Over-tightened, or unevenly tightened pump 
body to cover bolts  

 
Refer to Oil Pump Cover Disassemble in the 
4L60-E section of the Transmission Unit Repair 
Manual. 
Did you find and correct the condition?

-

Go to Step 13

Go to Step 9

Inspect the input housing and shaft assembly for the 
following conditions: 

z

Cut turbine shaft O-ring seal  

z

Damaged turbine shaft O-ring seal  

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E Diagnosis (DTC P0218 To DTC P2771) - Hummer H2

 

9

z

Restricted turbine shaft retainer and ball 
assembly  

z

Damaged turbine shaft retainer and ball 
assembly  

 
Refer to Input Housing and Shaft Assembly 
Inspection in the 4L60-E section of the 
Transmission Unit Repair Manual. 
Did you find and correct the condition?

-

Go to Step 13

Go to Step 10

10

Inspect the 2-4 band assembly for the following 
conditions: 

z

Worn 2-4 band/ptxt>  

z

Damaged 2-4 band/ptxt>  

z

Mispositioned 2-4 band/ptxt>  

z

Misassembled 2-4 band  

z

The band anchor pin is not engaged 

Refer to 2-4 Band Assembly Installation in 
the 4L60-E section of the Transmission Unit 
Repair Manual. 

 
Inspect the 2-4 servo assembly for the following 
conditions: 

z

Restricted apply passages in the 2-4 servo 
assembly  

z

Blocked apply passages in the 2-4 servo 
assembly  

z

Nicks or burrs on the 2nd apply piston pin  

z

Damaged 2nd apply piston pin  

z

Incorrect 2nd apply piston pin  

z

Nicks or burrs on the pin bore in the case  

z

Damaged fourth servo piston  

z

Misassembled fourth servo piston  

z

Damaged servo bore in the case  

z

Missing piston seals  

z

Cut piston seals  

z

Damaged piston seals  

z

Porosity in the pistons  

-

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E Diagnosis (DTC P0218 To DTC P2771) - Hummer H2

 

z

Porosity in the cover  

z

Porosity in the case  

z

Damaged piston seal grooves  

z

Plugged orifice cup plug  

z

Missing orifice cup plug  

 
Refer to 2-4 Servo Disassemble , 2-4 Servo Pin 
Length Check and extxref 
document="029_Transmission-Transaxle-02" 
filetype="sgml" extrefid="i191431">2-4 Servo 
Assembly Installation in the 4L60-E section of the 
Transmission Unit Repair Manual. 
Did you find and correct the condition?

Go to Step 13

Go to Step 11

11

Inspect the forward clutch assembly for the 
following conditions: 

z

Worn clutch plates  

z

Porosity in the forward clutch piston  

z

Damaged forward clutch piston  

z

Missing forward clutch piston inner and outer 
seals  

z

Cut forward clutch piston inner and outer 
seals  

z

Damaged forward clutch piston inner and 
outer seals  

z

Missing input housing to forward clutch 
housing O-ring seal  

z

Cut input housing to forward clutch housing 
O-ring seal  

z

Damaged input housing to forward clutch 
housing O-ring seal  

z

Damaged forward clutch housing  

z

Damaged forward clutch housing retainer and 
ball assembly  

z

Forward clutch housing retainer and ball 
assembly is not sealing  

 
Refer to Forward Clutch Assembly Assemble in 
the 4L60-E section of the Transmission Unit Repair 
Manual. 

-

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E Diagnosis (DTC P0218 To DTC P2771) - Hummer H2