bigray800 Posted October 22, 2014 Share Posted October 22, 2014 I have a 2008 GMC 3500 diesel and on the way home from Glamis the check engine light came on. Took it to the dealer today for a smog check and to see what the fault code was. It passed smog. The dealer said it was fault code P2563 and it was turbo related. He asked if I was towing went the light came on. Yes I was towing a 38 foot 5th wheel with 2 900 xps in it up White Water grade out of Palm Springs running about 50mph. The dealer reset the fault and said the turbo was ok. My question is should I trust the dealer or should I have a tow truck on stand by for my next trip? Quote Link to comment Share on other sites More sharing options...
dunefreak Posted October 22, 2014 Share Posted October 22, 2014 You're turbo vanes are likely sticking caused by soot accumulation/ buildup. It is a common issue that usually only happens when towing. Quote Link to comment Share on other sites More sharing options...
bigray800 Posted October 23, 2014 Author Share Posted October 23, 2014 Ok, so how do I drive it to keep that from happening. I try to take it easy and keep the trans temp under 200 degrees, the engine runs at 210. Quote Link to comment Share on other sites More sharing options...
dunefreak Posted October 23, 2014 Share Posted October 23, 2014 Replace the turbo. Quote Link to comment Share on other sites More sharing options...
UDP_Mike Posted November 4, 2014 Share Posted November 4, 2014 (edited) They have an updated turbo for your truck. This is common on trucks that tow heavy and often. The code means the actual and desired vane position was not aligned for a short period of time (Hence the vanes are stuck). Its due to build up on the unison ring that moves the vanes. There is also a GM service bulletin on this. Edited November 4, 2014 by UDP_Mike Quote Link to comment Share on other sites More sharing options...
dunefreak Posted November 4, 2014 Share Posted November 4, 2014 ^ Yep, what he said. That's the long version. haha I was going to mention the newer design turbo, but the updated one is basically just a new one. It supersedes the old part #. Quote Link to comment Share on other sites More sharing options...
Mhale00 Posted November 5, 2014 Share Posted November 5, 2014 I had the same problem a few yrs ago on my 08 3500 Chevy . Dealer replaced the turbo. Quote Link to comment Share on other sites More sharing options...
dunefreak Posted November 5, 2014 Share Posted November 5, 2014 I had the same problem a few yrs ago on my 08 3500 Chevy . Dealer replaced the turbo. I think I remember that. Quote Link to comment Share on other sites More sharing options...
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