Last post on Nov 07, 2013 at 4:11 PM
You are in the GMC Yukon
What is this discussion about?
GMC Yukon Denali, SUV
Go to NHTSA to file a safety complaint.
Or call Monday-Friday (8 am to 8 pm ET) (888) 327-4236 TTY: (800)424-9153
Dec 22, 2003 (12:28 pm)
Might be this:
Exhaust/Muffler Heat Shield Rattle, Popping Noise Under Vehicle (Install Heat Shield Retaining Straps On Muffler) #02-06-05-005B - (04/16/2003)
Exhaust/Muffler Heat Shield Rattle, Popping Noise Under Vehicle (Install Heat Shield Retaining Straps On Muffler)
2002-2003 Cadillac Escalade, Escalade EXT
2000-2003 Chevrolet Silverado, Suburban
2002-2003 Chevrolet Avalanche
2000-2003 GMC Denali, Denali XL, Sierra, Yukon XL
2003 HUMMER H2
with 5.3L or 6.0L Gas Engine (VINs T, N, U -- RPOs LM7, LQ9, LQ4)
Except 1500 Series Models
This bulletin is being revised to add RPO LQ4 to the Models information. Please discard Corporate Bulletin 02-06-05-005A (Section 06 -- Engine/Propulsion System).
Some customers may comment on a rattle/popping noise from under the vehicle.
The separation of the muffler heat shield from the muffler may cause a rattle under the vehicle.
Install two heat shield retaining straps, P/N 15164621, to the muffler and muffler heat shield. Follow the service procedure below to correct this concern.
Raise and support the vehicle.
Install a retaining strap, P/N 15164621, around the front of the muffler and muffler heat shield as shown above.
Pull the retaining strap tight with one hand and tighten the Allen head screw with the other hand.
Tighten the Allen head screw on the retaining strap to 13.5 N·m (119 lb in).
Repeat steps 2 and 3 on the rear of the muffler.
Lower the vehicle.
Part Number * Description * Qty
15164621 * Strap Asm-Exhaust Muffler Heat Shield * 2
Parts are currently available from GMSPO.
#70 of 1099 Thanks Alcan
Dec 23, 2003 (12:00 pm)
The only problem is that GM and the dealer are standing behind the idea that it is a normal sound. The heat shield has been blamed for the problem as you wrote but with no one taking reponsibilty to fix it I have no other recourse. They will even admit that some do it more than others and most don't do it at all but this Yukon's noises are really bad! They are also claiming that GM has been working on a fix since 1999 and still don't have one. They can have it back for all I care. This is just one of too many problems for this truck and I don't have the energy to fight for them to work on it all the time. Time is money and this is already costing me a fortune.
Dec 23, 2003 (2:45 pm)
Try approaching another dealer with the TSB #. The cost of installing the straps, both parts and labor, is peanuts.
Jan 06, 2004 (10:12 am)
it always amazes me that the us auto makers advertise what they never have... a good, safe, reliable vehicle...thank to all...the denali has come off my list of SUV's to buy, lincoln came off last week....thanks again....
Jan 06, 2004 (6:52 pm)
Bobbio56, OK what else are you now looking at?
Maybe the Toyota Land Cruiser with an impeccable reputation? The TLC is probably the best but the opening bid is 60K and replacing the starter (see a post on the Land Cruiser board) can cost 1K for just a rebuilt unit. (I think Pep Boys would have a GM starter for $39; alternators are less.)
Please let us know.
#74 of 1099 OK, whats left? by blockislandguy
Jan 07, 2004 (9:53 am)
valid point...i am looking at them all and frankly a LC 60k does less for me as you get toyota service at a lexus price...if i look at denali, lx, armada/qx56, I was thinking last night...for 15k to 20k diff. (i get a big discount at GMC) i can do alot with that money, even if it means renting loaners if the denali is in the shop....so as strange as this sounds to me, i am getting down to denali or lx...about 20k diff. for me...and that's something to think on...i love the way the denali looks and rides...it is not close to the lux of lx, however it isn't that far off....let me know your thoughts...thanks!
#75 of 1099 Is a Denali at 40K worth it? At 45K?
Jan 07, 2004 (6:33 pm)
Bobbio56, at your price of 40K the Denali despite its shortcomings looks good. But at 46K, the price most folks buy them for, maybe not. At 46K you are now 9K over a loaded Armada and closing in fast on a TLC. For some reason, 45-46K seems to be a lot more serious money than 40K. Maybe it is even a life style threshold. At 45-46K the German sedans come on the horizon like an E Class 4matic or a well equipped 5 Series. Or maybe you take a pass on spending 46K and scale back to a Tahoe LT for 34K. Then you can rent a house on Nantucket or Block Island for July with the 12K you saved.
Incidentally, I agree with you that paying Lexus-like money for a TLC and then putting up with the Japanese version of Chevrolet service is not a pleasant prospect.
#76 of 1099 To blockislandguy
Jan 09, 2004 (10:05 am)
thank again for the input...i am going to further frustrate myself this weekend and read more about all of them and gfo into a few dealers...within 10 miles of my house we have literally every dealer there is...as for BI or tucket...sorry been doing the Hamptons since I was born....I will report back.....
#77 of 1099 Popping/Clanking Exhaust
Jan 18, 2004 (9:09 am)
In response to " Yukon Denali Exhaust Noise by bigbadnin", I have an '03 Escalade that does the same thing. It started after about 500 miles and has gotten steadily worse. It's very embarassing as well as irritating as I, like you, spent over 50K for a vehicle that I am becoming very unhappy with. It appears there's no quick fix. I plan to ask my service advisor about the TSB 02-06-05-005B and see if that applies and if so, whether it resolves the issue.
#78 of 1099 Bong Sound
Jan 18, 2004 (11:58 am)
This was resolved in my Denali for about 25K miles by replacing the muffler. Now there is a new procedure they are going to try (the noise came back).