Question about 2003 GMC Sierra 1500

1 Answer

Service 4WD I started up my truck this morning and saw the words: Service 4WD on the dash. None of the buttons for switching from 2WD to 4WD had lights lit up. I couldn't shift into 4WD. I drove the truck about a mile and turned around. I didn't know if driving would hurt anything. Just had the oil changed a few days ago. What's up with it?

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 29 Answers

Service it like you would the truck engine it will have to be reset by the book almost like the truck i had that same problem

Posted on Oct 27, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

2004 Tahoe stuck in auto 4wd and service 4wd light is on


switch on dash can cause this but the transfer case control module is the culprit most times.try disconnecting battery this will should reset the TCM.see what happens.worst case senereo is bad transfer case

Dec 10, 2013 | 2004 Chevrolet Tahoe

1 Answer

I have had my Transfer Case Encoder Motor in my 2005 1500 Z71 replaced 2 times inthe last month, the last one replaced was less than 5 days ago. The last 2 mornings when I have started the truck the 4wd...


I would say the transfer case is hanging up and destroying the motor., and no there are no recalls, maybe technical service letters but these are not recalls.

Sep 26, 2012 | 2005 Chevrolet Silverado 1500 2WD

1 Answer

When in park and put in 4x4, Relay in dash clicks 5 times and both 4wdH and Lo lights come on.


The actuator has a spring that is known to break easily in mid-late 90's chevy's.

Jun 17, 2012 | Cars & Trucks

1 Answer

I recently purchased a 1999 Chevy Blazer 4WD LT with the 4WD AUTO 4 switch push button. We picked it up cheap. We now know why... 4WD dash switch is dead, changed it with a used one lights flash and n


Sounds like the encoder switch is bad ..it on the transfer case .it has a motor with wires going to it.when you press the button it sends a signal to that motor to switch into a certain gear..

Apr 21, 2012 | Cars & Trucks

1 Answer

4wd does not work iv changed the 4wd switch but still does work and on the 4wd switch none of the lights come on to tell you if you are in 2wd or 4wd hi or low


the switch is probably from a newer modle truck, although they work the indicator lights don't always work, and check the 4x4 fuse in the fuse panel on the left side of the dash by the drivers door

Nov 07, 2010 | 1999 GMC Sierra

2 Answers

My 2000 Chevrolet Blazer is stuck in 4low. Today my "service 4wd" lit up on my dash. I asked a friend to check it out really quick. He tried putting the car into auto 4wd with my push button switch over...


Start with the simple and check the fuses and replace any one that has gone bad. Pay attention to the 4WD fuse and replace it is it has gone bad.
Thank you for using fixya and keep me posted, be glad to help you get your Blazer running 100% again soon.

Jun 02, 2010 | 2000 Chevrolet Blazer

1 Answer

Service 4wd light is coming on but 4wd works fine


i had the same problem in my 99,i replaced the switch assembly on the dash and all is well,hope this helps

Sep 01, 2009 | 1999 GMC Sierra

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

575 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

61168 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

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

Answer questions

Manuals & User Guides

Loading...