Ask the Car People.SM


GMC Yukon XL and Yukon XL Denali

4104 messages,  Last post on Nov 11, 2012 at 9:13 AM

You are in the GMC Yukon Forum.

What is this discussion about? GMC Yukon XL, SUV

Messages Page 333 of 412

#3312 of 4104 pony6326 by dako_tian

Dec 15, 2003 (12:58 pm)

I've seen an entry or two somewhere early in these forums (you can read all, as I did, or do a search) about piston slap on the GMC V8s. But frankly, I saw a lot more about piston slap on the Fords when I was contemplating buying my 1999 F150 (sold to get our new 2003 Yukon XL). The problem didn't seem to be wide-spread in the Fords nor does it seem to be (even less so, if number of posts are any indication) in the GM engines.

#3313 of 4104 Hbaravo1 and davids1 by stakeout

Dec 15, 2003 (6:01 pm)

on my '99 Subn, I noticed the 'clunk' after only a few thousand miles were on it from new... only heard it when starting off from a dead stop..
 
brought in to Chevy dealer.. svc mgr knew about it right away.. didn't even look it up...was told by svc mgr that there was a TSB( his words) from Chevy on it and all they had to do "was change oil in rear".. never mentioned greasing the yoke.. they did it.. I never asked what type...
 
had it for 45k more miles without any more of the clunk.. they fixed it.. by simply replacing the original rear end oil with newer recommended one..
 
the closest I could find to a TSB on this clunking noise was from the NHTSA TSB site on a '99 Silverado.. same drivetrain as Subn..
 
you can do a search yourself for any make year model vehcile.. go to http://www.nhtsa.dot.gov/cars/problems/tsb/Index.cfm
 
ALSO NOTE... possible OMISSION of the Auxiliary Tranny oil cooler on Trailer Tow packages on most '99 Chevy full sized trucks... a recall was sent out to me on that one.. the Subn's was the same as the Silverado's below..
 
Make : CHEVROLET Model : SILVERADO Year : 1999
Service Bulletin Num : 010417004 Date of Bulletin: OCT 01, 2001
Component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
Summary:
INFORMATION REGARDING CLUNK, BUMP OR SQUAWK WHEN VEHICLE COMES TO A COMPLETE STOP OR ACCELERATION FROM COMPLETE STOP. *YH
 
yet another...
 
Make : CHEVROLET Model : SILVERADO Year : 1999
Service Bulletin Num : 270901 Date of Bulletin: SEP 27, 2001
Component: SUSPENSION
Summary:
SOME VEHICLES EQUIPPED WITH 4-WHEEL DRIVE EXTENDED CAB AND SHORT BED MAY EXPERIENCE A BUMP OR CLUNK ON STOP OR ACCELERATION. *SLC
 
Make : CHEVROLET Model : SILVERADO Year : 1999
Service Bulletin Num : 99027 Date of Bulletin: AUG 01, 1999
Component: POWER TRAIN:AUTOMATIC TRANSMISSION
Summary:
GENERAL MOTORS HAS DECIDED THAT SOME VEHICLES EQUIPPED WITH 4.8L OR 5.3L ENGINES AND 4L60-E AUTOMATIC TRANSMISSIONS, AND VEHICLES EQUIPPED WITH 3.73 REAR AXLES AND ORDERED WITH THE HEAVY-DUTY TRAILERING PACKAGE MAY NOT HAVE INCLUDED THE MERCHANDISING-INTENT AUXILIARY TRANSMISSION OIL COOLER. *TT

#3314 of 4104 by hbravo1

Dec 15, 2003 (8:01 pm)

Stakeout,
 
Thanks for all that great information. I will check the site as soon as possible.
 
Do you happen to know the specifics on what type of oil was used when they replaced the factory oil?
 
I think I might call another dealer and speak to the service manager.
 
Hector

#3315 of 4104 Dako_Tian by rodut

Dec 15, 2003 (9:41 pm)

Congratulations on your 2003 Yuck XL Dako_Tian !
Just joking ...
 
I test drove a 2003 this evening. Sounds unbelievable but I didn't know you had bought one. Must say I was impressed. Nice dinosaur feeling. Probably the toughest headlights I ever used. The long beams were terrific. Deep snow was not a problem.
 
The thing retails new for about CAN$62,000 in Canada (before any discounts). It's the Suburban 1500 4X4 LT. This one had 5000 KM (3125 miles), "management car", and they were asking for CAN$42,000. Looked and smelled like new.
 
The things I didn't like were: 1) when driving on the typical Canadian bumpy roads I was bouncing up and down and my foot was also bouncing on the gas pedal. This didn't happened when driving other cars. 2) No curtain airbags. 3) Low quality engine noise (not when driving but when carefully inserting my head under the hood). 4) Gas consumption.
 
Man ... I missed your fights ...
 
Rodut

#3316 of 4104 RE: Piston Slap by aa555zz

Dec 15, 2003 (11:47 pm)

This web page explains the cold start knock. The noise is caused by piston slap.
http://www.canadiandriver.com/articles/jk/020320.htm
 
There are tons of web pages that talk about this subject. Just search the internet for, "gm piston slap"

#3317 of 4104 Do Not buy Onstar by 1hopeck

Dec 16, 2003 (1:24 pm)

I own a 01 Yukon XL with On Star service. Last Saturday night after a Christmas show we came out to the Yukon XL and the battery was dead. When you hear ads about just push the onstar button and every thing will be fine as GM can tell you what is wrong. False advertising as I see it. The vehicle was towed to the dealership and the battery had a bad cell. This is the 3rd GM vehicle I have owned and the battery go bad within 24 months and it leaves you stranded.
 
Also maybe someone can explain why the car needs the battery after the car is running. I thought the battery was only needed for starting?

#3318 of 4104 hbravo1 by stakeout

Dec 16, 2003 (2:05 pm)

it's been a while since I had that '99 Subn rear end trouble.. then turned it back in on a new lease for a new 01 burban and that lease is almost up..
 
all I can remember is that the svc mgr said they replaced the fluid with a 'better and different type' as recommended by Chevy.. what type, viscosity, etc I don't recall if I asked about it at all... I was just glad they didn't have to replace anything in the rear end.. never a problem after that..nice and smooth... as a joke, I used to call it their 'magic oil'...
 
if I happen to come across that old warranty w*rksheet.. which I probably threw out .. I'll give you a yell..

#3319 of 4104 1hopeck battery by stakeout

Dec 16, 2003 (2:19 pm)

if that dead battery was UNDER 36 months AND under 36K miles.. it is covered by GM warranty in full.. not pro-rated at all.. replaced my old '99 Subn battery within 30 months...under 36K.. FREE
 
 I knew to keep a watch on our two '01 Subns that we now have... my Z71 battery went into the 'black' on the glass three months ago..after 26 months ..but over the 36K mileage..not completely dead so I tried recharging it.. waste of time.. had to buy a new one to be safe as we travel a lot these days .. my wife's '01 Subn so far is still 'green' on the battery glass on top..
 
it's not only GM.. had it happen my last two Ford SUV's.. an Explorer and an Expedition... both under warranty though
 
both GM and Ford just replaced them after running a check .. no questions asked..
 
as far as Onstar.. if it costs money to get it not worth it.. get a cell phone.. after one year free the price is silly.. a ripoff

#3320 of 4104 Battery... by davids1

Dec 16, 2003 (9:25 pm)

If you think the battery is only for starting, try disconnecting it once you start the vehicle. Won't run long without it.

#3321 of 4104 by hbravo1

Dec 16, 2003 (10:21 pm)

Stakeout,
Thanks for the information. I'll see what I can find out from some local sources.
Hector

Messages Page 333 of 412

To POST a message, please Sign In.

Advertisement

Browse by Category

Browse by Vehicle
   View All Vehicles

Browse by Board
Browse by Topic
View All Topics

Edmunds Community

Advertisement