Coolant leak-2005 Trailblazer - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

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  #1  
Old 11-30-2012, 12:08 AM
upsers59 upsers59 is offline
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2005 Chevy TrailBlazer LT
Silver Mist Metallic 4.2L I6 4X4
Join Date: Nov 2012
Location: Columbus Ohio
Posts: 5
Coolant leak-2005 Trailblazer

When parked overnight I noticed a coolant spot on my driveway.It is on the right side near the the rear of the wheel. It is too far over to be a head gasket. I noticed on the recovery tank which is on the right side that there is a hose out the rear of the tank which I think is the over flow tube.Could the coolant be coming from there?
Th spot is about the size of a dime?
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  #2  
Old 12-01-2012, 09:14 AM
Gevans17 Gevans17 is offline
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2004 Chevy TrailBlazer LS
Dark Green Metallic 4.2L I6 2WD
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leak

Quote:
Originally Posted by upsers59 View Post
When parked overnight I noticed a coolant spot on my driveway.It is on the right side near the the rear of the wheel. It is too far over to be a head gasket. I noticed on the recovery tank which is on the right side that there is a hose out the rear of the tank which I think is the over flow tube.Could the coolant be coming from there?
Th spot is about the size of a dime?
is it coolant or windshield washer fluid? both tanks are on the right fender.
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  #3  
Old 12-01-2012, 10:31 AM
upsers59 upsers59 is offline
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2005 Chevy TrailBlazer LT
Silver Mist Metallic 4.2L I6 4X4
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Quote:
Originally Posted by Gevans17 View Post
is it coolant or windshield washer fluid? both tanks are on the right fender.
It is coolant? its red and oily and has the smell of coolant.
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  #4  
Old 12-01-2012, 06:36 PM
FFPM73 FFPM73 is offline
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2003 Chevy TrailBlazer LT EXT
Summit White 4.2L I6 4X4
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Location: Burlington KY
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Wouldn't red and oily be transmission fluid? Maybe small drip around pan bolt?
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  #5  
Old 12-01-2012, 06:51 PM
upsers59 upsers59 is offline
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2005 Chevy TrailBlazer LT
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Originally Posted by FFPM73 View Post
Wouldn't red and oily be transmission fluid? Maybe small drip around pan bolt?
Too far over right to be trans fluid,Has the smell of anti-freeze.
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  #6  
Old 12-02-2012, 10:38 AM
NJTB04 NJTB04 is offline
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2004 Chevy TrailBlazer LS
Pewter Metallic 4.2L I6 4X4
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If it's not the overflow tank, the only other thing in that area is the heater hoses.
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  #7  
Old 12-02-2012, 05:04 PM
solow solow is offline
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2008 GMC Envoy SLT
Liquid Silver Metallic 4.2L I6 4X4
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Location: grand rapids mi
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I had the same problem with my envoy. I was finally able to trace it to the overflow tube from the coolant tank. The dealer put way too much coolant in the tank. When it heats up, it overflows just enough to create a drop or two on the garage floor.

Mike
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  #8  
Old 01-16-2013, 10:21 PM
moostadon moostadon is offline
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2005 Chevy TrailBlazer LT EXT
Magnetic Red Metallic 5.3L V8 4X4
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my tb has been doing the same thing,pull out the over flow tank start it and let it warm there is a coolant control valve that are nitorious for leaking when u shut it off it will leak ,check your hoses when its running you will probably see its not building any pressure when u shut it off it will bleed off pressure you will see that valve start dripping ,it will pretty much leak all the time the part is like 35 bucks at autozone
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  #9  
Old 01-17-2013, 02:14 PM
solow solow is offline
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2008 GMC Envoy SLT
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Thanks for the reply. I found a second leak. One of the heater hoses had a tiny leak where it couples with the metal tubing. I cut the hose down and installed a new clamp. Problem is now completely fixed.
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  #10  
Old 01-17-2013, 09:53 PM
Blitzedr6 Blitzedr6 is offline
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2004 Chevy TrailBlazer LT
Black Granite Metallic 4.2L I6 4X4
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I was finding water spots in my driveway from dexcool. Come to find out I had filled the tank under the hood to the top instead of to the line marked on the container. Removed the excess with a pump and all is well.

I thought the problem might be with the water pump so I wiggled the radiator fan with my hand and it is had a large degree of movement up-down and left-right. I hear a squeaking sound under the hood when I start the truck. I do not have have a service light on. Do you guys think I should go ahead and replace the water pump?
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