Question about 2002 GMC Yukon XL
Your description may actually be your answer, so to speak. You mention 'generally as engine is cooling or if coolant is added too quickly'. It sounds to me like the reservoir is over-filled.
When the engine is cooling, coolant tends to flow back to the reservoir (plastic 'jug' where you add coolant). A bad radiator cap or one that was replaced with too low a PSI rating can easily allow too much to fill the reservoir and and occasionally overflow it. Most reservoirs use a rubber tube to drain excess coolant so it may appear to 'leak' near the front left wheel or left side of engine.
Replace your radiator cap. (did they pressure test the cap too?)
Make sure you check your owner's manual for the proper PSI. My sources show 15-16psi, but that sounds a little high to me. Also, make sure you have the correct (50/50) anti-freeze/water mixture.
After you replace the cap, make sure the reservoir has the right amount of coolant and isn't over-filled. (To 'fill cold' line) Drive the engine until hot, then park the truck and see if the problem is fixed. Good Luck!
Posted on Dec 02, 2008
a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Feb 28, 2015 | Toyota Hilux Cars & Trucks
Mar 04, 2013 | 2002 Pontiac Sunfire
Apr 28, 2012 | 1998 Jaguar XK8
May 06, 2011 | 1998 Cadillac DeVille
Mar 30, 2011 | 1995 Pontiac Bonneville
Dec 05, 2010 | 2001 GMC Yukon XL
Aug 09, 2010 | 2002 Chevrolet Tahoe
Jun 22, 2010 | 2002 Chevrolet Malibu
Apr 15, 2009 | 2002 Ford Taurus
Oct 13, 2008 | 2001 GMC Yukon
450 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: