Question about 2002 GMC Sierra 2500HD

1 Answer

Transfer case shifting

I don't know the proper procedure to shift my electronic transfer case into neutral. There are 2H, 4H, and 4L buttons and a light to indicate neutral but the truck didn't come with the owners manual.

Posted by on

  • 2 more comments 
  • chadious80 May 22, 2008

    I'm trying to tow it behind a piece of equipment so it needs to have no connection between the transmission and the rear end.

  • chadious80 May 30, 2008

    The proper way to shift the transfer case into neutral, I found out, is to place transmission in neutral, hold the 2H and 4L buttons for 10-15 seconds and wait for the neutral light to blink then stay on.

  • Anonymous Mar 13, 2014

    1998 k3500 7.4

  • Anonymous Mar 29, 2014

    4wd manual shift dash lights 4wd no 4wd low no 4wd high

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 883 Answers

2H is neutral because only 2 wheels driven....the rear ones.....transfer case is free-spinning with non-driven front wheels now....maybe the light bulb burned out?

Posted on May 21, 2008

  • Marty marty May 22, 2008

    to ensure rear wheels are free, place transmission shifter into neutral, place transfer case in 2H.

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How do I turn 4wd on?


    • 1 Start your Dodge truck's engine.
    • 2 Turn the electronic transfer case from "2WD" to "4WD Lock" to engage the high range 4WD, if the dodge truck is equipped with an electronic transfer case; otherwise, shift the transfer case lever from "2H" to "4H." The electronic transfer case is located on the instrument panel and is marked with "2WD," "4WD Lock" and 4WD Low." The lever-equipped transfer case is located to the right of your leg and is marked with "2H," "4H" and "4L."
    • 3 Shift the transmission into "Neutral" while the vehicle is either stopped or rolling at 2 to 3 mph to begin engaging in the low range 4WD. Turn the electronic transfer case to "4WD Low," if the Dodge truck is equipped with an electronic transfer case; otherwise, shift the transfer case lever from "2H" or "4H" to "4L."
    Tips & Warnings
    • Indicator lights will come on and alert you that your vehicle is in either the high or low range of 4WD.
    • Do not engage in the low range of 4WD drive if the transmission is in gear; you must shift to "Neutral" first.
    • Many Dodge trucks allow you to shift from 2-wheel drive to the high range of 4WD at up to 55 mph--consult your truck's manual to ensure that this is possible. Do not exceed 55 mph while engaged in the high range of 4WD. Do not exceed 25 mph while engaged in the low range of 4WD.
    • Do not engage in 4WD unless you are on slipper or rocky roads.

Sep 02, 2011 | 2005 Dodge Dakota

1 Answer

Transfer case shifter is locked up in 2H on 4x4 montero sport 2002


Mine did the same thing so I removed the center console and then the boot around transfer case shifter and the shifter it self.
This is when I discovered a broken linkage that had wedged itself between the 4L & 4H shafts in the transfer case. I removed the broken parts and reassembled and it will shift between 2H & 4H but not 4L until the broken plastic linkage is replaced. Found your post while lookin for the replacement part so I thought I would try to help. Good Luck

Feb 08, 2011 | 2000 Mitsubishi Montero Sport

1 Answer

HOW TO SHIFT TO 4 WHEEL DRIVE


Hi - Here is instruction how to do.

From N to 4H

Stop the vehicle completely, place the

transmission in "N" (Neutral) and depress

the brake pedal and the clutch pedal fully

(if equipped), then push in and turn the

switch to shift into "4H".

From 4H to 4H LOCK

You can operate the transfer switch either

when the vehicle is stopped or while the

vehicle is moving.

Position the front wheels straight ahead

and turn the switch to shift into "4H LOCK".

If the vehicle is moving, we recommend

that the speed be less than 100 km/h (60

mph) during this operation.

NOTE:

• When shifting between the transfer

switch position and the transfer gear

position is unmatched, all 4WD indicators

will blink and the buzzer will sound.

• If it is difficult to shift between "4H" and

"4H LOCK" while the vehicle is moving,

try accelerating and decelerating your

vehicle several times after turning the

transfer switch. Be sure to wait until traffic

conditions allow you to accelerate and

decelerate safety before using this procedure.

From 4H LOCK to 4L LOCK

Stop the vehicle completely, place the

transmission in "N" (Neutral) and depress

the brake pedal and the clutch pedal fully

(if equipped), then push in and turn the

switch to shift into "4L LOCK".

From 4L LOCK to 4H LOCK

Stop the vehicle completely, place the

transmission in "N" (Neutral) and depress

the brake pedal and the clutch pedal fully

(if equipped), then push in and turn the

switch to shift into "4H LOCK".

From 4H LOCK to 4H

You can operate the transfer switch either

when the vehicle is stopped or while the

vehicle is moving.

Position the front wheels straight ahead

and turn the switch to shift into "4H". If the

vehicle is moving, we recommend that the

speed be less than 100 km/h (60 mph) during

this operation.

NOTE:

• When shifting between the transfer

switch position and the transfer gear

position is unmatched, all 4WD indicators

will blink and the buzzer will sound.

• If it is difficult to shift between "4H" and

"4H LOCK" while the vehicle is moving,

try accelerating and decelerating your

vehicle several times after turning the

transfer switch. Be sure to wait until traffic

conditions allow you to accelerate and

decelerate safety before using this procedure.

From 4H to N

64J209

Stop the vehicle completely, place the

transmission in "N" (Neutral) and depress

the brake pedal and the clutch pedal fully

(if equipped), then push in and turn the

switch to the mark (1) at the left of the "N"
position, and hold the switch in this posi-

tion for 5 seconds until the "N" indicator

blinks, then turn the switch to the "N" position.

When you turn the transfer switch to the

"N" position, "N" indicator will come on with

the buzzer sound.

CAUTION

• Be sure to stop the vehicle completely

before operating the transfer

switch to shift between "N" and

"4H", or between "4H LOCK" and

"4L LOCK".

• Do not shift between "4H" and "4H

LOCK" unless the front wheels are

in the straight-ahead position and

we recommend that the vehicle

speed be less than 100 km/h (60

mph).

Do not operate the transfer switch

while tires are racing.

• Do not operate your vehicle in "4H

LOCK" or "4L LOCK" on dry, hard

surfaces.

(Continued)

CAUTION

(Continued)

• Do not operate the vehicle while a

4WD mode indicator is blinking

except when shifting between "4H"

and "4L LOCK".

If you operate the vehicle while a

4WD mode indicator is blinking, a

buzzer will sound and the transfer

will shift to "N" (Neutral) to prevent

transfer case damage.

In this case, use the following procedure.

1) Depress the clutch pedal fully (if

equipped) or shift the automatic

transmission gearshift lever to the

"N" position.

2) Turn the transfer switch to the

position previously selected.
3) Operate the transfer switch again.

Feb 01, 2011 | 2007 Suzuki Grand Vitara 4WD

1 Answer

Transfer case grinds truck only runs in 4wheel low nothing in 4wheel high or 2wheel drive


Manual or electronic t case?

Section 07-07: Transfer Case, 4x4 System, Service 1994 Bronco/Econoline/F-Series Workshop Manual
DESCRIPTION AND OPERATION Electronic Shift Operation The transfer case is equipped with a magnetic clutch, similar to an air conditioning compressor clutch, which is located inside the transfer case adjacent to the lockup collar. The clutch is used to spin up the front drive system from zero to vehicle speed in milliseconds. This spin-up allows the shift between 2-high and 4-high to be made at vehicle speeds listed in the vehicle owner's guide. The spin up engages the front lock hubs. When the transfer case rear and front output shafts reach synchronous speed, the spring-loaded lockup collar mechanically engages the mainshaft hub to the chain drive sprocket and the magnetic clutch is then deactivated. Shifts between 4-high and 4-low can only occur with the transmission safety switches closed. The vehicle's speed must also be within specified limits as determined by the transfer case speed sensor (3 mph or under). Electronic Shift Control System
This system consists of a two-switch control system, an electronic control module, an electric shift motor (7G360) with an integral shift position sensor, and a speed sensor. Switch Control System
There are two control switches located on the upper right corner of the instrument panel for fingertip shift control. The two switches are mounted horizontally and are identified as "4x4" and "LOW RANGE". Two indicator bar lamps are located in the instrument cluster.

c11148a.gif

When either of the two switches on the instrument panel control are depressed, the first thing that happens is that the electronic control module receives input from the transfer case shift position sensor to verify what position the transfer case is in (2H, 4H or 4L). Next, the electronic control module looks at the speed sensor and the park/neutral position switch or clutch pedal position switch (depending on transmission type). If all conditions are correct to allow the desired shift, the electronic control module will tell the electric shift motor to execute the shift. After the shift has been made and the electric shift motor is off, the control module again looks at the shift position sensor to make sure the proper shift has been accomplished. Finally, the dash indicator light and the pushbutton light on the control panel will be illuminated by a signal from the electronic control module indicating the desired function has been completed.
Electronic Control Module
The electronic control module, located on the passenger side, controls the operation of the transfer case in response to inputs to the pushbutton control by the vehicle operator, the speed sensor, shift position sensor and the park/neutral position switch. Speed Sensor
The speed sensor, mounted on the rear of the transfer case , tells the electronic control module the speed of the vehicle to allow range shifts (in or out of 4L) to occur. Shift Position Sensor
The shift position sensor, an integral part of the electric shift motor , tells the electronic control module the shift position of the transfer case . Electric Shift Motor
The electric shift motor , mounted externally at the rear of the transfer case , drives a rotary helical cam which moves the 2W-4W shift fork and 4H-4L reduction shift fork to the selected vehicle drive position.

Nov 12, 2010 | 1994 Ford F250 Supercab

2 Answers

4runner 92 4WD problem


This might sound like a silly question but did you put the truck in neutral before you shifted into 4L ? Reason being transfer case damage can occure if it wasnt in neutral when you shifted into 4L.

May 10, 2010 | 1992 Toyota 4Runner

2 Answers

I have a Ford F150 that I engaged into 4L. Now I am trying to engage back to 2H and it is not engaging back. The 4x4 is controlled from the inside of the truck. The controller doesnt feel like there is any...


The switch could be bad, but if you cannot select 4H or 2H, I would think the shift motor in the transfer case is the issue.
This is assuming when you posted "control switch be bad", that you have an ESOF ( Electronic Shift on the Fly ) system.

Some times the Shift motor in the transfer case hangs up, and tapping the back of the transfer case cures the problem. The other thing could be the connector on the transfer case is corroded, remove the connector, and check it for water and other junk, clean if necessary.

You can remove the switch from the dash, and check the resistance on it.
35b14ff.jpg

If you secure the truck ( chock the wheels, parking brake, etc ) and having someone turn the ESOF switch from 4L to 2H or 4H, while tapping on the transfer case, this would be a good place to start.

Feb 23, 2010 | 2003 Ford F150 Regular Cab

3 Answers

I CAN NOT SHIFT THR TRANS INTO NUTRAL SO I CAN TOW IT BEHIND MY MOTOR HOME. IT WILL SHIFT INTO 2H, 4H, 4L


Shifting to NEUTRAL
To shift the transfer case to NEUTRAL, first make sure
the vehicle is parked so that it will not roll:
1. Set the parking brake.
2. Start the vehicle.
3. Connect the vehicle to the towing vehicle.
4. Put the transmission in NEUTRAL (N) or have
the clutch pedal pressed for vehicles with
manual transmission.
5. Shift the transfer case to 2HI.
6. Simultaneously press and hold the 2HI and
4LO buttons for 10 seconds. The red NEUTRAL
light will come on when the transfer case shift to
NEUTRAL is complete.
7. Shift the transmission to REVERSE (R) for one
second, then shift the transmission to DRIVE (D)
for one second or FIRST (1) for vehicles with
manual transmission.
8. Turn the ignition to OFF.
9. Place the transmission shift lever in PARK (P) or
FIRST (1) for vehicles with manual transmission.
10. Release the parking brake prior to towing.

************************

Shifting Out of NEUTRAL
To shift out of NEUTRAL:
1. Set the parking brake and apply the regular
brake pedal.
2. Start the vehicle with the transmission in PARK (P)
or FIRST (1) for vehicles with manual transmission.
3. Press the button for the desired transfer case position
(2HI, 4HI, AUTO 4WD or 4LO).
4. Put the transmission in NEUTRAL (N) or press the
clutch pedal for vehicles with manual transmission.
5. Shift the transmission lever to the desired position.
After the transfer case has shifted out of NEUTRAL,
the red light will go out.
6. A re-engagement sound is normal when shifting out
of NEUTRAL.

Jan 22, 2010 | 2000 GMC Jimmy

1 Answer

LAST WEDNESDAY WHILE OUT ON THE BACK ROADS, I DECIDED IT WOULD BE A GOOD TIME TO RUN THRU MY 4 WHEEL DRIVE (ELECTRONIC 2H, 4H, 4L, & ALL WHEEL), ALL OF THE SHIFTS WENT FINE, AND I THEN DROVE HOME. IN...


sounds like you have a combonation trans and transfer case issues. if you were running youre truck in four wheel on a hard dry surface, witch is not recomended , the trans probibly ran hot. as for the transfer case, it could be a combination of problems. dash switch/ actuator/vacum switch/ vacum canister witch is under the battery tray. all have to work in unison. service the trans first. if the truck has high miles, add trans conditoner, if you do not, it will slip. then the transfer case. refer to youre owners man for oil specs. youre problems are not uneque as these trucks are notorius for unreiable four wheel actiuation. hope i was some help.

Oct 27, 2009 | 2000 GMC Jimmy

1 Answer

I have a 97 nissan truck 4WD and it will not shift into 2H or 4H but it will shift into 4L. Will it be okay if I drive it in N


When your transfer case wont shift, you run the danger of blowing the engine. You can disconnect the transfer case or disengage it and you will only have 2 wheel drive. I have done this on a few fords, got better gas mileage.

Oct 04, 2009 | 1997 Nissan Pickup

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

352 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

64034 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21990 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...