Jump to content

4wd low not engaging

Larri hernandez

Recommended Posts

Larri hernandez New Member

Larri hernandez

Posted
Posted

Hey so I have a question about my 2003 GMC Sierra z71 truck. 
so I can lock into 4wd High but won’t engage in 4wd low. I came across that it has to be in neutral to get it in 4wd low. The only thing is that on the speedometer the little indicator will indicate that it’s in park reverse drive and 123. But when I put it in neutral it is in neutral it’s just that little bar that makes the truck actually recognize that it’s in neutral won’t show there so therefore it won’t lock in 4wd low. I could used to get it in there if I turned the truck off and turned it right back and quickly put it in neutral and it would show that little indicator on the speedometer that it was in neutral and it would lock into 4wd low. But after a while it stopped showing and now it won’t show so I can’t put it in neutral and suggesting On what that could be to fix it. I checked every thing with the wires and the fuses. I asked my fellow friend and he told me it could be the neutral safety switch but when I put the truck in neutral it will still cut on and even in park it would still turn on. Do you think that could be the problem or do you think it has to do something with the wiring in the steering wheel colum.? Anything would help thank you guys!!image.thumb.jpg.c5a51620f4281a63f45f3a6fdfae302b.jpg

image.jpg

image.jpg

image.jpg

Larri hernandez New Member

Larri hernandez

Posted
  • Author
Posted
2 hours ago, davester said:

No.

 

Do you have manual 4wd, or is it electric (ie, do you have a lever or buttons)?

I have the electric.

davester Senior Enthusiast

davester

Posted
Posted

I would say, most likely, it's the encoder on the transfer case (the electric shift motor), or the range fork has worn (this can happen even if you don't use it, as it can rub on the gear it moves all the time).  Could also be other things, but those are the most likely.

 

But diagnose instead of firing the parts cannon at it.

JimCost2014 Senior Enthusiast

JimCost2014

Posted
Posted

I know in that run of trucks they had Steering Wheel Position Sensors that would fail and need to be replaced.

 

When they went bad, it would throw all kinds of different warning codes, and your steering would feel different, so that and the bad run of intermediate steering shafts, nothing else comes to mind in the steering column. 

Larri hernandez New Member

Larri hernandez

Posted
  • Author
Posted

Just fixed it thank you guys. It was actually they neutral safety switch. Just got done putting it in and it finally showed that little bar indicating it was in neutral and locked right in.

JimCost2014 Senior Enthusiast

JimCost2014

Posted
Posted
34 minutes ago, Larri hernandez said:

Just fixed it thank you guys. It was actually they neutral safety switch. Just got done putting it in and it finally showed that little bar indicating it was in neutral and locked right in.

Good to hear!

 

Welcome to the site!

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Latest Articles

  • Posts

    • zibzer2
      Pulsating Noise 4Cyl Mode

      By zibzer2 · Posted

      2017 Silverado L83 5.3l 6speed transmission Hello, not a new member but havent posted in a while and my old signup info isnt working so had to create a new account. anyways, I have an issue with my truck and hope someone can spread some light on whats happening: -when it goes to 4cyl mode it makes a clunk sound (but not when coasting or going downhill) -when in 4 cyl mode and under load it makes a load pulsating sound (not a tick). -goes away completely when in M5 gear or when plugging in an AFM delete. Im guessing it is one of 2 things but im not convinced of either to be honest. 1. lifter stuck in v8 mode 2. torque converter shudder realistically it doesn't seem like the TC as there is no physical vibration , and it never happens in v8 mode. but maybe? and wouldnt a lifter make a sound whether with load or not? any ideas let me know please. thank you!  
    • Chuck FB
      Some Assembly is Required

      By Chuck FB · Posted

      Which has made me wonder with the various engine failures of a few brands in the last few years, is it sub par materials such as lifters etc causing failures, or bearing clearances on the crank etc or perhaps bad designing of an engine physically or causing too much load on the components due to the hp/torque they can push out of them. Or is the oil viscosity and additive package of current oils or a lack of oil flow by an oil pump not able to supply sufficient oil at idle or under high load at low rpm. Or is it every item I listed that combined together has pushed the limits so far to the left that there is hardly a margin of safety left and add in some fuel dilution and too long of an OCI and premature engine failure is the result ?. 
    • Grumpy Bear
      Some Assembly is Required

      By Grumpy Bear · Posted

      He is not saying that an SAE *W20 will have more viscosity than a *W40 due to MORE VII polymers. He is saying that although multiple *W40 may post in the PDS the same or similar 100 C and 150 C viscosities that the blenders choice of modifier TYPE and AMOUNT to get his chosen base to grade will not give identical real world viscosities in shear and at temperature. All will pass the SII test but not all will pass the 100 C HTHS (unpublished value) testing the blender does and relies on to get the required by law "percentage improvement' referenced to his last great work.    Tis the problem with the lie. Once told others are required to support it. 
    • PunchT37
      Parking Brake - Automatic Engagement Questions

      By PunchT37 · Posted

      I have a `25, 1500 that auto sets on incline. Never knew that at first. I have the electronic shifter. Just think if it didn`t do that? Unlike a mechanical shift that you can muscle out of park, how would you get this thing out? That would be a problem.   What I found out later is, I don`t have to push the button to release. Just put it in gear.   Setting parameters? Don`t know if it`s possible.
    • SoCal Angler
      Parking Brake - Automatic Engagement Questions

      By SoCal Angler · Posted

      2023 GMC 3500 HD, SLE, 6.6L Gas, 4x4, 6 Spd Options:  SLE Convenience Package; Driver Alert Package 1; Spray on Bedliner; X31 Off Road Package; TRAILERING MIRRORS, HEATED POWER -ADJUSTABLE, AUTO DIMMING, WITH TURN INDICATORS WHEELHOUSE LINERS, REAR INC. REAR AXLE - 3.73 RATIO INC. GVWR, 11,350 LBS. (5148 KG) INC. FRONT AND REAR PARK ASSIST, INC. ULTRASONIC     I have been launching my new boat and noticed some things related to the parking brake.. I usually set the parking brake (habit) when on flat ground for typical driving.    When backed down on the launch ramp to launch the boat and I place gear selector into Park, the parking brake activates automatically. My second nature is to set parking brake manually and noticed I was turing the parking brake off.  The parking brake appears to be setting itself automatically.   I looked all over my owner's manual and only found references to being on an incline and manually setting parking brake, or at times parking brake will be auto engaged, but nothing specific to my situation.    When is the parking brake automatically engaged?  Under what specific circumstances?  Can the auto set parameters be changed?     I like the auto set feature.  It would be nice if always engaged when shifted into Park and released when shifted out of Park (like my wifes 2025 RAV4).   Thanks!    

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...