Question about Chevrolet Silverado 1500

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Four wheel Drive doesn't work. Srvc 4wd light came on, and locked the button on Auto 4wd. Only thing that had changed with truck was putting a heavy load near the tailgate of the pickup, then all this happens. Snowing now and need help......

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  • ERICSFISHIN Dec 15, 2008

    I have a 2004 1500 and the switches dont light up or engage into 4wd.

    I had the same problem at 36k mi and they replaced the actuator. I now have 100k and it is doing it again. Is it easy to replace? I looked for scematics online but no luck. It is going to snow anyday now and dont have 4wd. I also have to get firewood but need 4wd if needed in the mud.

  • Anonymous Dec 21, 2008

    Yesterday 4 wheel drive worked fine. Today it's snowing and serice 4-wheel drive light came on. Now can't engage 4 wheel drive at all.

  • flouis1 Dec 30, 2008

    I was driving my 2003 silverado at about 15 miles per hr. my gear was on 2 wheel drive and all of a sudden, service 4 wheel drive indicator came on & locked on low 4 gear. I turned off the vehicle as the manual suggested; however, to no avail. I drove home and parked it for the night. When I woke up the following day, the truck was back on 2 wheel drive and everything seemed to be working as usual. I took it to the dealer today and they are keeping it overnight because they can't find anything yet. IS THIS GOING TO COST ME AN ARM AND A LEG!

  • Anonymous Jan 13, 2009

    Hello, I have 2004 chevytrailblazer, my 4wheel drive light came on? Currently stays on? What do i need to do or go get, please help???



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Small cylinoid on top of transfer case vacume operated. needs replaced or the vacume lines running to it. check and replace as needed

Posted on Dec 13, 2008

  • rufftuffcrea Dec 13, 2008

    small cylinoid on top of transfer case vacume operated. needs replaced or the vacume lines running to it. check and replace as needed



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3 Answers

How do you shift a 1995 blazer into 4 wheel drive

Hey Gilbert ,it should be easy sitting in drivers seat all the way forward is 2wd down one is 4wd high next one down is netural and last one down is 4wd low on older cars you may have to roll a little forward and roll a little in reverse to get it to in gauge , the sane when taking it out of 4wd
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Imitsubishi shogun engaging 4 wheel drive

no year?
never drive, part time 4wd on pavement, unless said pavement
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only AWD allows pavement (tires direct upon) driviing.
part time 4wd is for offroad , off pavement driving,
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and with out such, winds up the drive line fast. and breaks it.

wiki states (no year stated by you)
Part-time four-wheel drive was standard on all models. to 1991
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If it won't come back out try the forward and reverse thing again.
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What is auto 4 wheel drive?

Auto 4 wd is when the Silverado's PCM takes readings from the front and rear driver shaft and when there is any detection that the speeds are different. The Auto 4WD will activate the transfer case to lock it self to 4wd until the front and rear drive shaft are running at the same given speed of rotation.

Thank you for using fixya

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