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4 wheel drive wont engage on 2003 envoy - 2003 GMC Envoy

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6 Suggested Answers

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Posted on Jan 02, 2017

  • 1118 Answers

SOURCE: Four wheel drive will not

sometimes it helps to back the truck up a little ways, for some reason it helps lock it in.

Posted on Jan 12, 2009

  • 6982 Answers

SOURCE: I have a 2003 GMC Envoy, trans slipping that I have been towing

Low fluid can cause slipping. (depends upon how low) Most manufacturers post "safe" tow speeds. These are generally ignored. (not good). I recommend towing with driveshafts removed and where driveshaft has a "slip yoke" you install a yoke from a scrapyard and wire it to the tailshaft so it stays in place (keeps oil in and dirt out) Although you can't just detach the tow-bar and drive, it eliminates any possibility of trans damage, since the transmission cannot turn. (most use oil from pump to keep gearsets cool...when towing, pump is not pumping and over time and distance it can damage trans internals.)
Hope your problem is just low fluid and not a rebuild...keep in mind what I said though.

Posted on Jun 09, 2009

  • 118 Answers

SOURCE: wont shift back from 4x4 low, to 2x2

put the truck shifter from park to neutral then shift 4x4 button into 2whl Or Auto which ever you prefer. note when always shifting into low 4x4 or out the transmission MUST BE in neutral

Posted on Sep 07, 2009

  • 463 Answers

SOURCE: Lights flashing on 4 wheel drive panel

the front actuator is not working..If you open the hood and under the battery is the plunger that pulls the cable for the 4x4..If theres a vacuum leak it will not in gage.It could also be the sensor in the transfer case..What you could do is you may have to pull the tray out that holds the battery in and see if the actuator/plunger has a hole in it..It looks like an old chevys cruise control but it is directly under the battery...You can pull the plunger in and try and move the car to see if it locks in to rule out any bad parts in the front axle..If that works the problems a little easier to figure out..Either the plunger has a hole in it and cant hold vacuum or theres a hole in the vacuum lines to it..The vacuum lines also run all the way back to the transfer case also so they could have a hole in them also.If those are all good then the sensor in the transfercase on the top of it and its either a three wire or four wire is bad..Hope this helps you have a great day

Posted on Dec 08, 2009

  • 1 Answer

SOURCE: 2003 gmc envoy 4x4 not working

My 2005 Envoy 4WD is not working. Switc is currently on 2HI, but light is showing AWD. What is the problem???

Posted on Sep 13, 2010

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1 Answer

Why does my 4 wheel drive hesitates to engage when I make turn?

Simple things first. Check your transmission fluid.

Dec 20, 2015 | 2004 GMC Envoy

1 Answer

My 2003 gmc envoy xl will not engage into 4 wheel drive help.

check fuses, if they check out I would look at cable/linkage that attaches shift lever to transmission. If it don't have a 4x4 shifter it's probably the switch that puts it in 4x4.

Mar 08, 2013 | Chevrolet Tahoe Cars & Trucks

1 Answer

2003 Envoy. When I try to get all wheel drive or 4 wheel drive, the lights just flash and then goes back to 2 wheel drive. This vehicle has been in the shop for hours but no one can find the problem! NO...

If the transfer case actuator is working correctly, the only other possibility is the front disconnect mechanism. If this part of the 4WD system is not engaging then the Transfer Case Control Module (TCCM) will not allow the system to go into AWD or 4WD. Do yourself a favor and find a mechanic who knows GM 4WD systems.
BTW, operating the truck in AWD is not good for the drivetrain, if you need additional traction, switch to 4WD.

Dec 01, 2012 | 2003 GMC Envoy

1 Answer

Will not go in to 4 wheel drive

Since this is done electrically today with no light on dash I would check the switch that you move to engage the 4X4 action.

Jan 01, 2012 | 2003 GMC Envoy

1 Answer

The 4x4 buttons just blink on my envoy they wont engage

your actuator for the transfer case is probably malfunctioning. check to see if it makes any noice when you press the four wheel drive button. if not check current flow with a voltage meter. if no voltage is present check wiring and connections from the actualtor back. always check fuses and relays first.

Mar 30, 2011 | 1999 GMC Envoy

1 Answer

My envoy the check four wheel drive dont engage but when it does it wont run right it well only go twenty miles and hour

CHECK FOR THE MOBIL OIL AND radiator colling system are they jamed give a clean service and check for the oil filter , if the heat is controlled then tune your engine to the local machanic or service center
i hope this fix your problem

Mar 29, 2011 | 2004 GMC Envoy

1 Answer

What's the difference between A4WD and 4WD Hi in the snow? Which should I use in the snow?

A4wd means it senses wheel slipping automatically and engages 4 wheel drive as needed, use that.

Dec 29, 2010 | 2003 GMC Envoy Xl

3 Answers

Wont shift back from 4x4 low, to 2x2

I also have a 2002 Envoy. Shifting to and from 4wh and 4wa can be done on the fly but shifting to 4wL has to be done stoped and while in neutral. Try that. Otherwise I'm afraid its a new computer for you. Its located under the left rear seat and you need a loan for one.

Sep 05, 2009 | 2002 GMC Envoy

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