Hummer H2. Manual - part 2234

TRANSMISSION RANGE SWITCH LOGIC 

Transmission Range Switch Logic 

LINE PRESSURE 

Line Pressure (4L60-E) 

Gear Selector Position

Signal A

Signal B

Signal C

Park/Neutral

HI

LOW

HI

Reverse

LOW

LOW

HI

Drive 4

HI

LOW

LOW

Drive 3

HI

HI

LOW

Drive 2

HI

HI

HI

Drive 1

LOW

HI

HI

Invalid

LOW

HI

LOW

LOW

LOW

LOW

z

HI = Ignition voltage  

z

LOW = 0 voltage  

Gear Selector Position

Signal A

Signal B

Signal C

Signal P

Park (P)

LOW

HI

HI

LOW

Reverse (R)

LOW

LOW

HI

HI

Neutral (N)

HI

LOW

HI

LOW

Drive 4 (OD)

HI

LOW

LOW

HI

Drive 3 (3)

LOW

LOW

LOW

LOW

Drive 2 (2)

LOW

HI

LOW

HI

Drive 1 (1)

HI

HI

LOW

LOW

HI = Ignition voltage 
LOW = 0 volts

Pressure Control Solenoid Current (Amp)

Approximate Line Pressure (PSI)

4.8L/5.3L/6.0L

0.00

198-227

0.10

197-226

0.20

189-221

0.30

181-216

0.40

168-205

0.50

154-193

0.60

137-175

0.70

114-156

0.80

90-132

0.90

64-105

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2

  

COMPONENT RESISTANCE 

Component Resistance 

SCHEMATIC AND ROUTING DIAGRAMS 

AUTOMATIC TRANSMISSION SCHEMATIC ICONS 

Automatic Transmission Schematic Icons 

1.00

53-85

1.10

53-68

Component

Pass 

Thru Pins

Resistance at 20°C 

(68°F)

Resistance at 100°C 

(212°F)

Resistance to 

Ground (Case)

1-2 Shift Solenoid Valve

A, E

19-24 ohm

24-31 ohm

Greater than 250 

K ohm

2-3 Shift Solenoid Valve

B, E

19-24 ohm

24-31 ohm

Greater than 250 

K ohm

TCC Solenoid Valve

T, E

21-26 ohm

26-33 ohm

Greater than 250 

K ohm

TCC PWM Solenoid 

Valve

U, E

10-11 ohm

13-15 ohm

Greater than 250 

K ohm

3-2 Shift Solenoid Valve 

Assembly

S, E

20-24 ohm

29-32 ohm

Greater than 250 

K ohm

Pressure Control Solenoid 

Valve

C, D

3-5 ohm

4-7 ohm

Greater than 250 

K ohm

*Transmission Fluid 

Temperature (TFT) 

Sensor

M, L

3088-3942 ohm

159.3-198.0 ohm

Greater than 10 

M ohm

Vehicle Speed Sensor

A, B VSS 

CONN

1420 ohm @ 25°C 

(77°F) (AWD/4WD)

2140 ohm @ 150°C 

(302°F) (AWD/4WD)

Greater than 10 

M ohm

IMPORTANT:

The resistance of this device is necessarily temperature dependent and will therefore vary far more 
than any other device. Refer to Transmission Fluid Temperature (TFT) Sensor Specifications .

Icon

Icon Definition

NOTE:

The OBD II symbol is used on the circuit 
diagrams in order to alert the technician that 
the circuit is essential for proper OBD II 
emission control circuit operation. Any circuit 
which fails and causes the malfunction 
indicator lamp (MIL) to turn ON, or causes 
emissions-related component damage, is 
identified as an OBD II circuit.

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2

  

IMPORTANT:

Twisted-pair wires provide an effective 
"shield" that helps protect sensitive 
electronic components from electrical 
interference. If the wires were covered with 
shielding, install new shielding. 
In order to prevent electrical interference 
from degrading the performance of the 
connected components, you must maintain 
the proper specification when making any 
repairs to the twisted-pair wires shown : 

z

The wires must be twisted a minimum 
of 10 turns per 31 cm (12 in) as 
measured anywhere along the length of 
the wires  

z

The outside diameter of the twisted 
wires must not exceed 6.0 mm  

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2

  

AUTOMATIC TRANSMISSION CONTROLS SCHEMATICS

Fig. 2: Power, BCM, PCM, Class 2, Stop Lamp Switch, Tow/Haul Switch, and Shift Solenoids 
Courtesy of GENERAL MOTORS CORP.

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2