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Jeep Scramb Champion Author Michigan Posts:3,606 Points:693,805 Joined:Jan 2004	Message Posted: Mar 7, 2005 4:25:51 PM Ignore Jeep Scramb Report Abuse Greetings all coolant question. I have a 1996 Snoma and I have been trying find where my truck is leaking coolant from. So far its dose not look to be radiator or hoses. I have replaced my hoses and removed my radiator and had it tested. the water pump shows no sigh of a leak. and it looks like it coming from the front of the engine area someplace. Has anyone else had troube like this? or any good ideas what to check next?

Jeep Scramb

Champion Author
Michigan

Posts:3,606
Points:693,805
Joined:Jan 2004

Message Posted: Mar 7, 2005 4:25:51 PM

Ignore Jeep Scramb Report Abuse

Greetings all
coolant question. I have a 1996 Snoma and I have been trying find where my truck is leaking coolant from. So far its dose not look to be radiator or hoses. I have replaced my hoses and removed my radiator and had it tested. the water pump shows no sigh of a leak. and it looks like it coming from the front of the engine area someplace.
Has anyone else had troube like this? or any good ideas what to check next?

REPLIES (newest first)Ignore Short Messages

ilderton All-Star Author London Posts:679 Points:1,496,890 Joined:Jul 2008	Message Posted: Jun 21, 2009 10:18:27 PM Ignore ilderton Report Abuse i am a gm mechanic.....for now. if it has the 4.3L engine. it most likely (99%) is the intake gasket, but dont rule out the water pump. if you have a small mirror, look under the water pump for signs of seepage. also look near the back of the engine near the distributor (intake leak).
99Truck Champion Author Michigan Posts:12,913 Points:1,695,825 Joined:Feb 2007	Message Posted: May 13, 2009 7:06:42 AM Ignore 99Truck Report Abuse Got rid of my leak with a new intake manifold gasket.
RickW2 Sophomore Author Utah Posts:177 Points:12,785 Joined:Jul 2007	Message Posted: Aug 14, 2007 1:45:43 PM Ignore RickW2 Report Abuse 97 5.7L leaked coolant from the aluminum connector at the heater hose to block junction at 48,000 miles. Took a while to find. Repl;ace the dex with prestone green and have had no problem since, now at 113,000 miles.
bayshtyshorty Rookie Author Michigan Posts:10 Points:3,800 Joined:Jul 2007	Message Posted: Jul 22, 2007 1:18:28 AM Ignore bayshtyshorty Report Abuse oh yeah i forgot...when u replace, use ONLY the metal shim gaskets...if you use OEM you'll do it again. Fel-Pro was contracted to make those gaskets....the metal was the original design, but GM cheaped it out...the rest is history
bayshtyshorty Rookie Author Michigan Posts:10 Points:3,800 Joined:Jul 2007	Message Posted: Jul 22, 2007 1:16:53 AM Ignore bayshtyshorty Report Abuse Replace you intake gaskets before it starts leaking into the oil....because then you get to replace your lifters too.....YAY!!! if it gets bad enought your oil will look like mud and you'll get to put an engine in it.
Gearwrench Champion Author Grand Rapids Posts:12,998 Points:2,641,720 Joined:Dec 2005	Message Posted: Apr 28, 2006 9:00:23 PM Ignore Gearwrench Report Abuse If you have a 4.3L engine in your Sonoma,it is the intake manifold gasket.
trsmith8 All-Star Author Arizona Posts:621 Points:167,985 Joined:Apr 2006	Message Posted: Apr 20, 2006 10:42:01 AM Ignore trsmith8 Report Abuse It's a intake manifold gasket problem. It need to be replaced be for it gets in to the oil system.
YESKA Rookie Author Los Angeles Posts:1 Points:3,970 Joined:Apr 2006	Message Posted: Apr 12, 2006 12:51:32 AM Ignore YESKA Report Abuse Dex cool is a pain but if your car comes with it don't try to be cheap and put the green stuff it will get expensive. Use the almond type of tablets they do help. Also if your metal hoses start to leak your better of replacing them with rubber hoses they last just as long and are far cheaper.
calypso93 Champion Author Scranton Posts:11,203 Points:1,292,385 Joined:Mar 2004	Message Posted: Oct 28, 2005 1:58:30 AM Ignore calypso93 Report Abuse I had several manifold gasket leaks. The quick fix was for the dealer to put more of the "GM Cooling System tablets" in the coolant. The sealer has ground almond shells as the main ingredient. I flushed and cleaned the system a few times, noting the gelatinous masses that came out. Closest description is elephant snot. I put regular Prestone in and haven't had any trouble yet in the last year and a half.
tspec Rookie Author Vancouver Posts:1 Points:120 Joined:Sep 2005	Message Posted: Sep 17, 2005 2:03:47 AM Ignore tspec Report Abuse Dex cool is made for the modern GM motor. The old green stuff will cause problems. If you don't believe me just try it!!!! Then you will see the engine eaten out from the inside. I looked up the info on mycarstats & they are talking about sludge build up & corrosion. This is common for people who do not service their vehicles on a regular basis. Come on people get a grip and service as needed.
BigRedBus Veteran Author Twin Cities Posts:314 Points:69,680 Joined:Jun 2004	Message Posted: Sep 2, 2005 8:56:35 PM Ignore BigRedBus Report Abuse Leak is coming from lower intake gaskets. Plastic gasket with a printed rubber seal in the gasket. Once the plastic cracks there is nothing left to hold the seal in place. Upper and lower gaskets with a coolant flush, t stat, lube oil filter will run in the $750 range. With a complete tune up, plugs wires, cap and rotor, fuel, air and PCV will run about $960. That is aftermarket price with ACDelco tune up parts and gaskets from General Motors. Do not forget to replace the coolant fitting before it breaks off. It also includes a full system flush and standard green style coolant used.
nascar7 Champion Author Massachusetts Posts:5,246 Points:199,730 Joined:Mar 2005	Message Posted: Jul 4, 2005 4:39:05 AM Ignore nascar7 Report Abuse did they pressure test system could be gasket iv see that
mootack Rookie Author Georgia Posts:1 Points:370 Joined:Apr 2005	Message Posted: Apr 10, 2005 4:15:29 AM Ignore mootack Report Abuse Take it in to a GM dealer. Or you may be looking at big $$$ to fix. Dexxa Cool is the problem. It eats your engine from the inside out. I had coolant mixed with engine oil leaking from the front of my vehicle. Have your radiator flushed completely and go back to the old green stuff. GM service departments have to use Dexxa cool. Go to someplace like Kaufman tire. It will cost about $150 (total flush 3X to remove all the old stuff). Check out www.mycarstats.com for more info. There is a class action lawsuit building. It's a real eye opener. The end result if left unresolved is a blown engine. Good luck.
On_The_Gas Champion Author Indiana Posts:19,929 Points:2,867,980 Joined:Mar 2005	Message Posted: Mar 20, 2005 12:17:00 AM Ignore On_The_Gas Report Abuse Yup!! Twice, both times was waterpump gasket!!