I have a 2007 GMC 2500 new style gas and when the truck is in 4wd it is just about useless, when i am trying to get through snow its the worst it seems like i don't have all my power, the wheels wont spin and it just creeps along. My local dealer has told me that this is a safety feature built into the truck it only gives you 25% power form a standing stop. now this seem kinda weird to me because like i said it doesn't do much good in 4wd. so i was wondering if anyone els out there has had a similar issue and some possible solutions.
thanks.

 

Are you experiencing this in 4WD L or 4WD H??? I have the same truck but the diesel.
I've never heard of this 25% thang.
I drag race my truck in 4x4 for better launches at the green light.

 

its in 4 high that i experience this.

 

I never heard of the 25% thing either. You should check with another dealer or contact GM direct. I have had issues similar when using Auto 4WD but not in 4h or 4L.

 

gordiejohnstone,
Has your concern been resolved? Feel free to contact me privately with the last eight of you VIN and I will be able to look into this further for you.

Tricia, GM Customer Service.

 

Then be sure to come back and update us on what the issue was. I would be very interested to know.

 

Indeed. Me too.