Hummer H2. Manual — part 2411

SLIP/FLARE IN ANY GEAR

Slip/Flare in any Gear

NO THIRD GEAR

No 3rd

DRIVES IN NEUTRAL

Drives in Neutral

SECOND GEAR START

Second Gear Start

8 or 12

Control Valve Body Installation in Transmission Unit Repair article - 4L60-E.

Orificed Cup
Plug (240)

Not fully pressed into pump cover. Refer to Oil Pump Stator Shaft Bushing
Replacement in Transmission Unit Repair article - 4L60-E.

Checks

Causes

Pump Slide Inner/Outer Spring (206/207)

Omitted

Checks

Causes

Orificed Cup Plug (698)

Missing or blown out

Checks

Causes

Forward Clutch (446-451)

The clutch does not release

Manual Valve Link (89)

Disconnected

Case (103)

z

The face is not flat

z

Internal leakage exists

Checks

Causes

Signal Noise on VSS Circuit

Chassis vibrations, incorrect harness routing, owner
installed electronic components.

Diagnostic Trouble Code (DTC)

z

Electrical or mechanical 1-2 Shift Solenoid Valve
(367) malfunction.

z

Sediment in the valve body may cause improper
TFP operation.

Leaking AFL Circuit

Spacer plate (48), spacer plate gaskets (47 or 52),
control valve body (60), mispositioned, damaged or
poor sealing/mating surface exist.

Blocked or restricted Valve Body Spacer Plate
(48) Spacer Plate to Case Gasket (47) or Spacer
Plate to Valve Body Gasket (52)

Trapped sediment or metal particles.

Stuck 1-2 Shift Valve (366)

z

Trapped sediment or metal particles.

2004 Hummer H2

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

NO PARK

No Park

OIL OUT THE VENT

Oil Out the Vent

VIBRATION IN REVERSE AND WHINING NOISE IN PARK

Vibration in Reverse and Whining Noise in Park

RATCHETING NOISE

Ratcheting Noise

POPPING NOISE

Popping Noise

z

Binding shift valve or worn valve body bore.

TFP manual valve position switch (69)

TFP manual valve position switch (69) erratic
operation.

Checks

Causes

Parking Lock Actuator Linkage (85-90)

z

Actuator rod assembly bent or damaged

z

Actuator rod spring binding or improperly crimped

z

Actuator rod not attached to inside detent lever

z

Parking lock bracket damaged or not torqued properly

z

Inside detent lever not torqued properly

z

Parking pawl binding or damaged

Checks

Causes

Oil Pump (4)

Chamber in pump body rotor pocket

Miscellaneous

Fluid level-overfilled

Checks

Causes

Oil Pump (4)

Chamber in pump body rotor pocket

Miscellaneous

Fluid level-overfilled

Checks

Causes

Parking Brake Pawl (50-81)

The parking pawl return spring is weak, damaged, or misassembled

Checks

Action

DEFINITION: A popping noise, similar to popcorn popping
Oil Pump

z

Check fluid level.

2004 Hummer H2

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

WHINE NOISE VARYING WITH RPM OR FLUID PRESSURE

Whine Noise Varying with RPM or Fluid Pressure

BUZZ NOISE OR HIGH FREQUENCY RATTLE SOUND

Buzz Noise or High Frequency Rattle Sound

NOISE IN RANDOM RANGES

Noise in Random Ranges

NO DRIVE IN ALL RANGES

No Drive in All Ranges

System

z

Inspect for pump cavitation, indicated by bubbles in fluid.

z

Inspect the transmission fluid filter for a leaky seam.

z

Inspect the transmission fluid filter seal for improper positioning or for a cut
seal.

Checks

Action

DEFINITION: In all ranges, a whine which may be sensitive to RPM load, or which ceases when the
TCC engages, or which is sensitive to the oil pressure
Torque
Converter (1)

Verify that the noise is internal to the torque converter by placing your left foot on the
brake with the gear or selector in Drive. Momentarily stall the engine. Torque Converter
noise increases under load.

Oil Pump
System

Verify that the noise is internal to the oil pump during a preliminary oil pressure check.
An increase in line pressure will vary an oil pump noise.

Checks

Action

DEFINITION: A buzz or high frequency rattle

z

Trace Cooler Pipes

z

Check for binding or contact at the
Radiator, other than at the Cooler
Pipe connectors

Verify a pressure buzz by watching for a needle vibration
of the pressure gauge. A road test may be necessary. Refer
to Road Test Procedure .

Checks

Action

DEFINITION: Noise only in certain gear ranges
Refer to Range Reference . Determine the power flow and the applicable components that may be
causing this noise.

Checks

Causes

Low Transmission Fluid Level

Transmission or cooler line leak

Oil Pump (4)

Damaged oil pump rotor (212)

Torque Converter (1)

z

Damaged pump drive

2004 Hummer H2

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

NO DRIVE IN DRIVE RANGE

No Drive in Drive Range

SHIFT LEVER INDICATES WRONG GEAR

Shift Lever Indicates Wrong Gear

NO GEAR SELECTION

No Gear Selection

ENGINE STARTS IN GEAR

Engine Starts in Gear

DELAY IN DRIVE AND REVERSE

Delay in Drive and Reverse

z

The converter to flex plate bolts are missing

Checks

Causes

Torque Converter (1)

z

The stator roller clutch is not holding

z

The converter is not bolted to the flex plate

Checks

Causes

Manual Valve (340)

Not engaged to detent lever

Detent Roller Pin (63)

Missing or damaged

Detent Roller (63)

Broken or disconnected

Detent Spring (63)

Broken or disconnected

Manual Valve Link (89)

Loose or missing

Manual Shaft (84)

Flats not parallel

Indicator Linkage

Misadjusted

Checks

Causes

Detent Lever (63)

Nut loose or missing

Manual Valve (84)

Stuck

Spacer Plate/Gaskets (47, 48, 52)

Blocked holes

Control Valve Body to Case (60/103)

Blocked channels

Checks

Causes

Manual Valve (24)

Not engaged to detent lever

Transmission Range Switch

Not working or mispositioned

Checks

Causes

Forward Clutch Piston (630)

Cut or damaged piston seals

2004 Hummer H2

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