Two Guys Garage Forum  

Go Back   Two Guys Garage Forum > Your Own Projects

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 12-12-2010, 04:41 PM
kenmitchell kenmitchell is offline
Registered User
 
Join Date: Dec 2010
Location: Cocoa,FL
Posts: 7
kenmitchell is on a distinguished road
Yukon oil pan leak?

Hello Forum Members I've got a 2002 Yukon XL 1500 2 wd with an engine oil leak in the back of the engine. I've looked it over pretty good,bought the UV dye,etc. It looks like the oil pan but I wondering if it could be the rear cover(can't see it).I already bought the oil pan gasket but I would love to hear some experienced advice on this subject. I bought a manual but it's not much help.
Thanks
Ken Mitchell
Reply With Quote
  #2  
Old 12-12-2010, 04:55 PM
carsandcycles's Avatar
carsandcycles carsandcycles is offline
Moderator
 
Join Date: Jan 2002
Location: Mt Pleasant S.C.
Posts: 2,962
carsandcycles is on a distinguished road
moving to "Your Own Projects" section.
__________________
'11 Cadillac STS, '04 Bravada but still lusting for that '69 Z-28.

"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety."
---Benjamin Franklin, Historical Review of Penn., 1759.
Reply With Quote
  #3  
Old 12-12-2010, 05:12 PM
kenmitchell kenmitchell is offline
Registered User
 
Join Date: Dec 2010
Location: Cocoa,FL
Posts: 7
kenmitchell is on a distinguished road
sorry
Reply With Quote
  #4  
Old 12-12-2010, 05:18 PM
dougbfresh dougbfresh is offline
Banned
 
Join Date: May 2004
Location: Naperville, IL
Posts: 4,921
dougbfresh is on a distinguished road
What engine? Several GM's have the Oil pressure sender on the back of the engine that leaks down the rear of the engine.
Reply With Quote
  #5  
Old 12-12-2010, 07:31 PM
kenmitchell kenmitchell is offline
Registered User
 
Join Date: Dec 2010
Location: Cocoa,FL
Posts: 7
kenmitchell is on a distinguished road
I have a 5.3 L. I looked at the Crank Position Sensor,just above the starter ,if thats what you're talking about.
Thanks
Ken
Reply With Quote
  #6  
Old 12-12-2010, 11:07 PM
dougbfresh dougbfresh is offline
Banned
 
Join Date: May 2004
Location: Naperville, IL
Posts: 4,921
dougbfresh is on a distinguished road
Quote:
Originally Posted by kenmitchell View Post
I have a 5.3 L. I looked at the Crank Position Sensor,just above the starter ,if thats what you're talking about.
Thanks
Ken
Not what I'm talking about. See where your oil pressure sensor is.
Reply With Quote
  #7  
Old 12-13-2010, 03:10 PM
justen's Avatar
justen justen is offline
Diesel Nut
 
Join Date: Dec 2001
Location: Minnesota
Posts: 4,306
justen is on a distinguished road
Better make sure it's the oil pan. Usually when it's at the back it's not the oil pan leaking. But the rear main seal. Between the engine and transmission. So check that out with a good light.
__________________
Real trucks don't have spark plugs!
Reply With Quote
  #8  
Old 12-13-2010, 03:16 PM
dougbfresh dougbfresh is offline
Banned
 
Join Date: May 2004
Location: Naperville, IL
Posts: 4,921
dougbfresh is on a distinguished road
Looks like the oil pressure sender is in the same place as the LS1:
http://www.chevytalk.org/fusionbb/sh...rch/1/#1845312

They leak and run down the back of the block-that would be the 1st place I'd look.

Last edited by dougbfresh; 12-13-2010 at 03:17 PM.
Reply With Quote
  #9  
Old 12-13-2010, 10:05 PM
kenmitchell kenmitchell is offline
Registered User
 
Join Date: Dec 2010
Location: Cocoa,FL
Posts: 7
kenmitchell is on a distinguished road
I'm gonna answer two posts with one post Justen- I looked in the torque converter inspection hole, no oil.Isn't that where I would see it?
Dougfresh- I will look the sending unit over. Man it's right up against the firewall. Hmmm, maybe a good inspection mirror. Thank you for the link also.
I appreciate your interest
Ken
Reply With Quote
  #10  
Old 12-14-2010, 12:38 AM
justen's Avatar
justen justen is offline
Diesel Nut
 
Join Date: Dec 2001
Location: Minnesota
Posts: 4,306
justen is on a distinguished road
Might not be close enough, The rear main seal on the back of engine it's where the shaft that holds you're flywheel/flexplate where the starter engages. All it takes is a small dribble to make a real big mess. Driving on the highway. Alot of times you can see black oil run along the transmission and even get the oil pan of the transmission looking oily. One good way to find out is. When you park the truck at night. Make sure she full of oil. Then leave a nice CLEAN size piece of cardboard under the oil pan, engine and transmission. Next day go out with a flashlight and look at the cardboard and see where the oil is dropping from. Oil pan area, oil filter area, transmission area. Another way is a oil dye like blue or something that is sure to pinpoint the leak. Dyes can be bought at auto stores.
__________________
Real trucks don't have spark plugs!

Last edited by justen; 12-14-2010 at 02:38 AM.
Reply With Quote
  #11  
Old 12-15-2010, 06:43 PM
kenmitchell kenmitchell is offline
Registered User
 
Join Date: Dec 2010
Location: Cocoa,FL
Posts: 7
kenmitchell is on a distinguished road
Anyone know what size sending unit socket will fit my Yukon. Looks like some oil around it but I gotta buy a socket and I want to get the right size.
Thanks
Ken
Reply With Quote
  #12  
Old 12-15-2010, 07:14 PM
dougbfresh dougbfresh is offline
Banned
 
Join Date: May 2004
Location: Naperville, IL
Posts: 4,921
dougbfresh is on a distinguished road
I'm guessing 22mm but go to the parts store and check one out. Be VERY careful on the torque spec, on the LSx's it's like 15 ft-lbs. It's easy to bust one. Many of the Vette crowd relocate the sender to the side of the engine, several vette outfits sell a relocation kit.

Last edited by dougbfresh; 12-15-2010 at 07:16 PM.
Reply With Quote
  #13  
Old 12-19-2010, 10:03 PM
kenmitchell kenmitchell is offline
Registered User
 
Join Date: Dec 2010
Location: Cocoa,FL
Posts: 7
kenmitchell is on a distinguished road
Well I changed the oil pan gasket and checked the sending unit,doesn't look like as much oil as before.But it's been raining so I haven't gotten a good look yet. The oil I see is dark and I changed the oil with the pan gasket so I'm hopeful.
God is good
Ken
Reply With Quote
  #14  
Old 01-06-2011, 01:00 AM
lorenzalizares lorenzalizares is offline
Registered User
 
Join Date: Jan 2011
Posts: 1
lorenzalizares is on a distinguished road
oil pan..

Quote:
Originally Posted by kenmitchell View Post
Hello Forum Members I've got a 2002 Yukon XL 1500 2 wd with an engine oil leak in the back of the engine. I've looked it over pretty good,bought the UV dye,etc. It looks like the oil pan but I wondering if it could be the rear cover(can't see it).I already bought the oil pan gasket but I would love to hear some experienced advice on this subject. I bought a manual but it's not much help.
Thanks
Ken Mitchell
Does anyone have or know where I can find a how-to on taking off the oil pan and replacing the rear main seal on a 1998 Blazer. Engine code 'W'.. thanks.
Reply With Quote
  #15  
Old 01-07-2011, 04:46 PM
justen's Avatar
justen justen is offline
Diesel Nut
 
Join Date: Dec 2001
Location: Minnesota
Posts: 4,306
justen is on a distinguished road
I did have a book on a blazer, gave it to my father a few years back when I sold mine. And he bought one a few years newer.

Blazer and s-10 2wd are easy to change the oil pan gasket. 4wd is another story, Some people remove the differential to get to it. Some remove the transmission and wiggle the engine and tilt to get to it. For me the easiest pull the engine.
__________________
Real trucks don't have spark plugs!
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:10 AM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
TwoGuysGarage.com © Brenton Productions