The dealer wanted to charge me 129$ just to evaluate the problem plus 175$ to clean the tank of the bad def. They called me and told me it was "all set". I got there and asked what was the level of urea in the def that they deemed to be "bad" as it needs a minimum of 32.5%. They had no answer so I asked for a sample and I would send it out to be tested before I pay. They didn't save any as they washed out the tank. I told them to find the real problem and get back to me. The "real problem" was a bad nox sensor. Free under warranty. Be careful what you get taken for at a dealership.
Red 2011 CCSB GMC Sierra 3500hd SRW LML. Motor is stock and staying that way. Needs a B&W turnover/companion and a tonneau that's it.
White 2006 Silverado SCLB LBZ. Service body filled to GVWR with tools. Just did studs, head gaskets, PCV re-route, egr delete and cat delete. Firestone ride rite bags.