Question about 2002 GMC Yukon Denali
They are all located in your exhaust system you have bank1 and bank 2 sensors 1 and 2 with a (4) oxygen sensor system. They are pretty simple to replace they kinda look like spark plugs screwed into the exhaust sytem with wire attached to them with a plug at the ends of the wires, usually the wire are colored white grey and black .Approximately 4 thin wires on each sensor. Easy to find start from the top of the engine and follow the manifolds downwards toward the tail pipe/pipes. There will be two on either side of the manifold before the converters and 2 after the converters. All you need is an oxygen sensor socket and A ratchet. The socket had a slot that allow you ro put over the sensors and wires or there is a "crow foot" type looks like a Brake line wrench work well too. You may need some liquid wrench/.WD40 maybe rusted a little bit. Counter clockwise to loosen and clockwise to install. Good Luck hope that I Fixed ya. Get back in contact if you need more help
Posted on Dec 16, 2008
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Nov 12, 2016 | 2002 GMC Yukon XL
Feb 08, 2011 | 2002 Chevrolet Malibu
Jan 27, 2011 | 2002 GMC Yukon Denali
May 09, 2010 | 2002 Toyota Tacoma
Apr 20, 2010 | 2002 GMC Yukon Denali
Jul 19, 2009 | 2002 Suzuki XL-7
Jul 08, 2009 | 2002 GMC Yukon Denali
Dec 22, 2008 | 2003 GMC Yukon Denali
200 people viewed this question
Usually answered in minutes!