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Good luck. Dealer had my truck 2 weeks to replace u-joint. Covered under warranty, but could not locate parts. .

I have an 2003 SLT 3500 DRW 4X4 with 4:10. Have about 34K miles and getting 17. 5 MPG on highway empty after I installed a retrax cover. I have a 40' travel trailer weighs around 10K that I get 12. 5 MPG.

After tearing everything apart and not finding anything unusual, I broke down and bought a Posi-lok 4X4. I'll get it installed this week. Everything I have read, this should fix my problem for good!

Mine, when you accelerate there is a grinding noise from the front end that sounds like the 4WD is trying to engage when the vehicle is in 2WD. I post as soon as I get a change to tear things apart.

I checked out the switch. Shifting the transfer case between 2WD and 4WD causes the vaccum to switch from the red line to the black line. I think I will tear off the CAD and see if it's dirty or debris has found a way in. Thanks for your help.

Bought another truck 1996 Dodge 1500 extended cab 4X4. The 4X4 wants to engage during acceleration when in 2WD and the 4X4 wants to disengage in 4WD. I checked the vacuum at the canister. I have 15 psi at an idle on the red line in 2WD and the black line in 4WD. I also applied vacuum to the...

Mine started out at 15. 2 MPG. Was avg. 16. 5 MPG until I added a tonneau cover. Now I’m getting 17. 8 MPG driving a combination of highway and city. Now I have about 29000 miles. Just got back from a trip to the East Coast through the mountains pulling a 37' 9000# travel trailer. Avg. 12. 5 MPG...

Thanks for your info. I did some checking myself this weekend. I found there is a recall that sounds like it could remedy this problem.

I have 27,000 miles on my 03 3500 dually. It's currently at the dealer for a u-joint that has failed. Won't have it ready till next week, but that’s a separate story. I noticed last winter that after 30 minutes of driving in the cold weather, sometimes the engine would be a high idle. Then if...