My 2005 Yukon Denali wont exceed 35mph. Why is this? It will go up to speeds as high as 45mph if shift into 4wd
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2005 GMC Yukon Denali Question: 05 Yukon Denali Speed Issues
Answer #1dandd April 02, 2009, 13:21Master
Do you have any Service Engine Soon Lights or Service Vehicle Soon Lights on? If so, theses lights will mean that a computer code has been stored and this code can help you determine what the problem is. It sounds like your vehicle is in some kind of a 'limp home mode ' that is preventing it from going normal speeds.
Answer #2apn52707 April 03, 2009, 20:12Rookie
Its sounds like you transmision is taking a dump on you. You shouls go get this checked out.
Answer #3Visitor, March 14, 2010, 06:51
how do you shift into 4wd if its all wheel drive?