Ram Heavy Duty Forum
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Trailer lights
Hi I have a 2026 3500 Ram with Cummings and when I hook up to my trailer the trailer lights come on and will not shut off when I turn the truck off. The light switch in the truck is off. I have 3 different trailers and it is the same problem with all three. I have to pull the light cord to make...- Cobalt99
- Thread
- Replies: 6
- Forum: 2025+ 6.7 Cummins I6 ZF 8 Speed
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def fluid
I have a 2022 ram 3500 with 11,000 miles. Went to dealer with check engine light on and I was told I had bad def fluid and repair cost would be $8,000 dollars out of pocket. I believe the def fluid went bad because the truck sits a lot and is only used for towing. Dealer is no help. Anybody have...- Cobalt99
- Thread
- Replies: 100
- Forum: 4.5 Gen General Discussion