Coolant Leaking - LIM? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 04-18-2007, 12:10 AM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Aug 2005
Location: Port Charlotte, FL
Posts: 79
Thanks: 0
Thanked 0 Times in 0 Posts
2000Supercharged is on a distinguished road
Default Coolant Leaking - LIM?

I've been having some problems with my coolant level going down for quite a few months and I'm starting to think that I should change the LIM gasket. I'm going to take it in to my local shop for this but have a couple of questions - Does anything besides changing the gasket need to be done? Should I buy the GM aluminum gasket myself or let the shop take care of it? Should I have them flush and refill with different coolant (not Dexcool) or will it not matter with the aluminum gasket? Anything else I need to be aware of? Thanks for your help!
2000Supercharged is offline   Reply With Quote
Old 04-18-2007, 01:35 AM   #2
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Get the aluminum gaskets one way or another (dealer or www.intense-racing.com ) and peanut butter would be a better choice than DEX.

Is it an external leak, or only a drop in level? How'* the oil look inside the valve cover and on the dipstick right after driving?

Make sure they replace the coolant elbows with DORMAN, not GM replacements regardless of condition.
willwren is offline   Reply With Quote
Old 04-18-2007, 08:24 AM   #3
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

In reality PB is a worse choice than Dex .

The aluminum you will want to ensure are used. Most mechanics will simply call and order the parts from their local places and get the old style plastic. You will also want to specify the coolant as well. Many places will simply top the level after the repair since our systems hold much more than will be drained to change the gaskets. There might be an added charge for the gaskets and flush.
BillBoost37 is offline   Reply With Quote
Old 04-18-2007, 10:50 AM   #4
Mark Fahey
Guest
 
Posts: n/a
Default

As long as you have the supercharger off, have them turn it upside down to drain it and then refill with new oil. Also, have them change the injector o-rings while they are at it.
  Reply With Quote
Old 04-18-2007, 11:08 AM   #5
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

In mentioning the SC oil.. It is relatively low cost and probably worth your time to change it yourself. You will want GM SC oil only. There are no substitutes.
BillBoost37 is offline   Reply With Quote
Old 04-18-2007, 12:16 PM   #6
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

SC oil posts were split into a new topic in Forced Induction.
willwren is offline   Reply With Quote
Old 04-18-2007, 05:08 PM   #7
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Aug 2005
Location: Port Charlotte, FL
Posts: 79
Thanks: 0
Thanked 0 Times in 0 Posts
2000Supercharged is on a distinguished road
Default

I've only noticed the level dropping - I've had to refill it several times.
Should I buy the Dorman coolant elbows myself? Do you have a part number for that?
I already change my own supercharger oil so I won't worry about that.
Which coolant would be a good choice to replace it with? Or does it not matter as long as it'* not DexCool?
Is getting the injector o-rings changed fairly inexpensive? Haven't heard anything about that before...
Thanks!
2000Supercharged is offline   Reply With Quote
Old 04-18-2007, 07:22 PM   #8
Mark Fahey
Guest
 
Posts: n/a
Default

The extra cost for the injector o-rings should be next to nothing. They have to pull the fuel rail anyway so just popping the o-rings off and replacing them would take maybe a minute per injector.
  Reply With Quote
Old 04-18-2007, 09:20 PM   #9
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

As a replacement for dexcool...I like the Prestone long life.
The elbow can be found at Autozones in the Help section with red packaging.
BillBoost37 is offline   Reply With Quote
Old 04-18-2007, 11:47 PM   #10
Member
Posts like a V-Tak
 
Join Date: Nov 2005
Posts: 52
Thanks: 0
Thanked 0 Times in 0 Posts
carterb is on a distinguished road
Default

I also had the LIM gasket leak about 30k miles ago - repaired - and no problems since. However, I found 2 other ways that coolant slowly went down more recently - (1) my overflow reservoir plastic cap cracked all the way across the top - evaporated out? and (2) the metal radiator cap was leaking externally, slowly and evaporating when hot at about 80k miles. After replacing both, I have not seen the problem again in a couple of months (knock on wood!). You might want to check that in addition to the various hose connections for slow leakers....

Carter
carterb is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
UIM and LIM replaced now leaking coolant out of UIM gasket Paul1981 2000-2005 10 12-21-2007 11:05 PM
leaking LIM gaskets??? 1993 SLE 1992-1999 14 01-20-2007 12:00 PM
1998 Chevy Malibu leaking coolant Custom88 Lounge 5 11-20-2004 10:59 PM
Changed Thermostat...leaking coolant ? SSEimatt93 General GM Chat 8 01-27-2004 01:12 AM
94 SSE leaking coolant doug 1992-1999 7 01-20-2004 09:09 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:49 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.