Hummer H2. Manual — part 2496

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