Hummer H2. Manual — part 2467

HARSH GARAGE SHIFT

Harsh Garage Shift

NO OVERRUN BRAKING - MANUAL 3-2-1

No Overrun Braking - Manual 3-2-1

Checks

Causes

Input Housing Assembly (621)

z

3-4 Apply ring stuck in applied position

z

Forward clutch not releasing

z

Turbine shaft seals missing, cut or damaged

Manual Valve Link (89)

Disconnected

Valve Body Assembly (60)

z

2-3 Shift valve stuck

z

Manual linkage not adjusted

z

Spacer plate and gaskets incorrect, mispositioned or
damaged

z

Lo overrun valve stuck

z

Orificed cup plug restricted, missing or damaged

Reverse Input Clutch Assembly (606-
614)

z

Clutch plate worn

z

Reverse input housing and drum assembly cracked at
weld

z

Clutch plate retaining ring out of groove

z

Return spring assembly retaining ring out of groove

z

Seals cut or damaged

z

Restricted apply passage

z

Porosity in piston

z

Belleville plate installed incorrectly

z

Excessive clutch plate travel

z

Oversized housing

Lo and Reverse Clutch (694-696)

z

Clutch plates worn

z

Porosity in piston

z

Seals damaged

z

Return spring assembly retaining ring mispositioned

z

Restricted apply passage

Checks

Causes

Valve Body Assembly (60)

z

Orifice cup plug missing

z

Checkball missing

2004 Hummer H2

2004 TRANSMISSION Automatic Transaxle - 4L60-E/4L65-E (Troubleshooting)

NO TORQUE CONVERTER CLUTCH (TCC) APPLY (300 RPM SLIP)

No Torque Converter Clutch (TCC) Apply

Checks

Causes

External Linkage

Not adjusted properly

Valve Body Assembly (60)

z

4-3 Sequence valve stuck

z

Checkball mispositioned

z

Spacer plate and gaskets incorrect, damaged or
mispositioned

Overrun and Forward Clutch Assembly
(644-651)

z

Turbine shaft oil passages plugged or not drilled

z

Turbine shaft seal rings damaged

z

Turbine shaft sealing balls loose or missing

z

Porosity in forward or overrun clutch piston

z

Overrun piston seals cut or damaged

z

Overrun piston checkball not sealing

Checks

Causes

Valve Body Assembly (60)

z

Regulator apply valve side loading

z

Stuck converter clutch valve

z

TCC apply valve stuck closed (debris in bore)

z

TCC/PWM solenoid broken/cracked

z

Turbine shaft O-ring omitted

z

TCC/PWM solenoid leaking

Input Housing and Turbine Shaft Assembly
(621)

z

Turbine shaft hole not drilled to full depth

z

Scratched turbine shaft journals

z

Turbine shaft O-ring omitted/damaged

z

Turbine shaft retainer and ball assembly
restricted or damaged

Electrical

z

12 volts not supplied to transmission

z

Outside electrical connector damaged

z

Inside electrical connector damaged

z

Wire harness damaged

z

TCC solenoid damaged

z

Electrical short (pinched wire)

z

TCC solenoid not grounded

Torque Converter Clutch (1)

Internal damage (blue or distorted)

Oil Pump Assembly (4)

z

TCC spring cocked

z

Orifice cup plug restricted or damaged

2004 Hummer H2

2004 TRANSMISSION Automatic Transaxle - 4L60-E/4L65-E (Troubleshooting)

TORQUE CONVERTER CLUTCH (TCC) SHUDDER

No Torque Converter Clutch Shudder

NO TORQUE CONVERTER CLUTCH (TCC) RELEASE

No TCC Release

z

Pump to case gasket mispositioned

z

Converter clutch valve retaining ring
mispositioned

z

Converter clutch valve stuck or assembled
backward

Transmission Fluid Pressure Manual Valve
Position Switch (69)

z

Contamination

z

Damaged seals

Solenoid Screen (367A/367B)

Blocked

TCC Solenoid Valve (Part of 66)

Internal damage

Engine Speed Sensor

Internal damage

Engine Coolant Temperature Sensor

Internal damage

Automatic Transmission Fluid Temperature
Sensor (Part of 69)

Internal damage

Brake Switch

Internal damage

PCM

Internal damage

TCC PWM Solenoid (Part of 66)

Internal damage

Checks

Causes

Miscellaneous

z

Low oil pressure

z

Engine not tuned properly

z

Contaminated transmission oil

Oil Filter (72)

z

Crack in filter body

z

Flash restricting filter neck

z

O-ring seal (71) cut or damaged

Torque Converter Assembly (1)

z

Internal damage

z

Broken weld or missing weight

Oil Pump Assembly (4)

z

Converter clutch valve (224) stuck

z

Restricted oil passage

Input Housing and Shaft Assembly
(621)

z

Turbin shaft O-ring (618) cut or damaged

z

Turbin shaft retainer and ball assembly (617) restricted or
damaged

Checks

Causes

2004 Hummer H2

2004 TRANSMISSION Automatic Transaxle - 4L60-E/4L65-E (Troubleshooting)

TORQUE CONVERTER CLUTCH (TCC) SLIP - 100 RPM SLIP

TCC Slip (100 RPM)

TORQUE CONVERTER CLUTCH (TCC) SLIP WITH STALL/STUMBLE

TCC Slip with Stall/Stumble

TORQUE CONVERTER CLUTCH (TCC) INTERMITTENT - OK COLD/SLIPS HOT

Intermittent TCC OK Cold/Slips Hot

NO FOURTH GEAR, OR SLIPS IN FOURTH GEAR

No 4th or Slipping 4th

TCC Solenoid Valve (Part of 66)

z

External ground

z

Clogged exhaust orifice

Converter (1)

Internal damage

Valve Body Assembly (60)

The converter clutch apply valve is stuck in the apply position

Oil Pump Assembly (4)

The converter clutch valve is stuck

PCM

External ground

Checks

Causes

Valve Body Assembly (60)

z

TCC/PWM solenoid leaks

z

Regulator apply valve or converter clutch shift valve sticking or
side loading

Oil Pump Assembly (4)

z

Stator shaft bushings worn, due to scratched turbine shaft journal
(replace bushings and input housing assembly)

z

TCC apply valve is stuck open

z

TCC solenoid leaking

Input Housing and Turbine
Shaft Assembly (621)

z

Scratched journal on turbine shaft

z

Turbine shaft O-ring cut

z

Turbine shaft hole not drilled to full depth

Checks

Causes

TCC Apply Valve (Part of 66)

Stuck open

Checks

Causes

TCC PWM Solenoid (396)

Leaks

Regulator Apply Valve (216)

Sticking valve

Converter Clutch Shift Valve (224)

Sticking valve

Checks

Causes

Checkball #2, 4, Valve body checkball in wrong location or an additional checkball is installed. Refer to

2004 Hummer H2

2004 TRANSMISSION Automatic Transaxle - 4L60-E/4L65-E (Troubleshooting)