If this video helped you smash that subscribe button update 3 12 2018 holy crap guys 36k views i cant thank you all enough for the amount of positive feedback on this video i have a . The video covers the most common cause of the service 4wd message in the 2003 2006 silverado sierra trucks because it comes up so frequently i decided not to use my gm scan tool to pull the code . 2003 silverado service 4wd chevy truck forum silverado sierra gmc truck forums 2003 silverado service 4wd dec 28 2012 205pm hi all ive had a bit of an issue with my 4wd lately with the 13s of snow we got over the holiday its definitely time to try and track down what the issue is. Gm 4wd warning light issues is your 4wd light flashing will your 4wd not engage is your 4wd warning light on or a service 4wd system message displayed please read the article below for information common problems and possible solutions to these issues gm push button 4wd systems. I have been getting a message service 4wd come on and go off about 3 4 times now in the past couple of weeks 4wd seems to work fine when i engage it is this just a reminder to change out the differential fluid or do i have some other issue going on im approaching 70k miles
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