Question about 2004 GMC Sierra

1 Answer

Service 4wd light only comes on when driving in 2 hi. If it is in auto or 4 hi it is fine. Is this the sensor unit?

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 122 Answers

If everything is working fine, then yes, it seems to be the sensor/sending unit. Check all connections first prior to replacement.

Good luck!

Posted on Feb 04, 2010

Ad

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.
New users get to try the service completely Free afterwhich it costs $6 per call 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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

Service 4wd light is on


The Internet, though, has a large number of web sites
where you can buy service manuals and schematics
from bookstores, publishers, and other collectors.
Here is just a sampling of what sites are out there:

Factory Auto manuals
http://www.factoryautomanuals.com/
search for : factory service auto repair manuals

Repair Service Manuals
http://www.repairservicemanuals.com/
the largest collection of Automotive Repair Service
Manuals and Owners Guides on the internet. Our
database currently holds over 54,000 entries
dating back from 1940 to more recent 2011.

about Chilton Repair Manuals
http://www.chilton.cengage.com/

about Haynes Repair Manuals
Haynes Publishing
Haynes auto manuals
http://www.haynes.com/

Jan 15, 2016 | 2002 Dodge Dakota Club Cab

2 Answers

Why is the service 4WD message on all the time and diff lock light flashes and dos not lock?


Hummer 4wd service light reset Questions & Answers - Fixya

www.fixya.com > Forum > Tags > 4wd service light reset
Hummer h2 2003 55000 mill ... service 4wd the liht is on all time Remote the battery wire from the car for 20 ... My 2006 H3 will not come out of 4 wheel drive?

Sep 22, 2015 | 2006 Hummer H2

1 Answer

Service 4WD has come on twice, two winters in a row.


Its your control module for the 4 WD on the transfer case hanging. They go bad often. I would replace

Jan 11, 2015 | 2003 Chevrolet TrailBlazer

1 Answer

Stuck in 4 wheel lo, how do i get it back to 2 wheel hi ?


On these issue, there are few solved help links for troubleshooting the issue easily.-------

Click the link below: ---

No 4x4 light on dash?

http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html

-----------

4X4 Truck makes roaring noise in the front end?

http://schematicsdiagram.blogspot.com/2012/01/4x4-truck-makes-roaring-noise-in-front.html

-------------

Car will not go into 4WD high or 4WD low?


http://schematicsdiagram.blogspot.com/2011/12/car-will-not-go-into-4wd-high-or-4wd.html

--------------

No 4x4 light on dash?

http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html

------------

4 wheel drive system will not disengage?

http://technoanswers.blogspot.com/2012/01/4-wheel-drive-system-will-not-disengage.html

----------

4WD light is flashing and beeping? NO 4WD high?

http://schematicsdiagram.blogspot.in/2012/02/4wd-light-is-flashing-and-beeping-no.html

----------

2002 Jeep Wrangler: 4WD Idiot Light is ON?

http://technoanswers.blogspot.in/2012/06/2002-jeep-wrangler-4wd-idiot-light-is.html

----------

Traction control switch will not engage on 4WD High or Low

http://whoisbyme.blogspot.com/2012/10/traction-control-switch-will-not-engage.html

-----------

4WD light flashing and 4WD will engage after few minutes

http://repairhelpcenter.blogspot.com/2012/10/4wd-light-flashing-and-4wd-will-engage.html

------------

2008 Toyota Tundra: 4x4 Wheel Drive Light is Flashing?

http://technoanswers.blogspot.in/2012/05/2008-toyota-tundra-4x4-wheel-drive.html

----------

4x4 front differential will not engage the axle on ford?

http://technoanswers.blogspot.in/2012/02/4x4-front-differential-will-not-engage.html

-------

4x4 will not engage on Ford F150?

http://technoanswers.blogspot.in/2012/02/4x4-will-not-engage-on-ford-f150.html

-------------

Dodge Ram 4x4 light keeps flashing

4X4 LOW LIGHT IS FLASHING ON DASH

http://technoanswers.blogspot.in/2012/09/dodge-ram-4x4-light-keeps-flashing.html

----------

Ford 4x4 front wheels will not engage?

http://technoanswers.blogspot.in/2012/02/ford-4x4-front-wheels-will-not-engage.html

-------------

These details will help.

Thanks.

Dec 09, 2012 | 1999 Chevrolet Blazer

1 Answer

1998 Chevy Suburban - service 4wd light comes on after running 4x4 for 2 mins


Well it could be the selector switch, but I doubt it.
Generally, the service light means something is not working that the computer controls. Solenoids and valves are a couple of possibilities.
The transfer case is shifted by solenoids commanded by the body computer based on the switch position on the dash.
You should be able to have a shop scan the body computer for trouble codes and proceed from there.
A basic code reader may not access the body computer.

Jul 05, 2012 | 1999 GMC Suburban

3 Answers

2001 Chevy s10 Blazer. I have a service 4wd light. i can dissconnect the battery and the light goes away. when i drive the 4 lo light will come on from time to time and flash like its trying to engage and...


2001 Chevy Blazer it likes to stay in 4 low. replaced sensor, pannel motor, older computern to check it was placed for a couple weeks or less it will do the same thing again. Just dies and quits has to be restarted agin still in 4 low . Tried to shift the gears slowly, Place in reverse and 2HD pressed and held while backing up this dinn't work either. To get it home I had to hold it in neutral and run the gears again ginally I got it to a shop. He is out of ideas too.

Jul 28, 2010 | 2001 Chevrolet Blazer

1 Answer

I was driving down the road and my 4WD HI light started blinking today on my 1997 Chevy 1500. If I put it in 4 LO the 4 HI light quits blinking and the 4 LO light comes on Press the 2WD button and the 4HI...


check switch connections,fluid level and actuator at transfer case if good have truck scanned for possible trouble code possibleas sensor or component going bad , some auto stores such as auto zone /advanced auto do it for free if theres a trouble code it will be a starting point

Oct 29, 2009 | 1999 Chevrolet Silverado 1500

2 Answers

4wd light says service


Does the 4-wheel drive work ? Most of the time, it is a reminder to have your fluid changed. Other times, it could be a vacuum leak in the line that engages the 4-wheel drive. Check both of those first.

Apr 04, 2009 | 1999 Chevrolet Tahoe

3 Answers

My truck is stuck in 4 lo


pull atc 25 amp fuse in underhood fuse center and 10 amp 4wd fuse inside cars fuse box,your problem is in control box behind kick panel on pass. side ,corrosion build up,

Mar 06, 2009 | 2000 Chevrolet Blazer

Not finding what you are looking for?
2004 GMC Sierra Logo

Related Topics:

130 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

76630 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

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

Answer questions

Manuals & User Guides

Loading...