Question about 2004 GMC Envoy

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Where is the thermostat located? Bottom, below alternator?

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  • 391farmgirl Jul 20, 2009

    It's not there. Took hose off housing and it is not there. Could it be at bottom, near alternator?

  • 391farmgirl Jul 20, 2009

    We can't figure this out? Pulled old housing off and new one from dealer doesn't look the same>

  • 391farmgirl Jul 20, 2009

    It is not there. Took top hose off of radiator, housing is totally different, can't get local GMC Dealer to give any answers.Could thermostat be in bottom housing.

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The thermostat is located in the housing on the engine the upper radiator hose goes to,
. On the 4.2L, the service manual says you need to remove the alternator. Whether or not you actually need to remove it to access the bolts or clamp is another question. Once you have the alternator out of the way, looks like there are two small bolts that hold the thermostat housing to the block underneath the exhaust manifold on the driver's side of the engine.

Posted on Jul 20, 2009

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Follow the top radiator hose, it will lead you right to the thermostat housing on top of engine block.

Posted on Jul 20, 2009

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1 Answer

How do i change thermostat


See picture below, thermostat is located on driver's side of engine. You will have to remove the alternator to get proper access to the thermostat.


7_25_2012_11_17_41_pm.jpg

Jul 22, 2012 | 2002 Chevrolet TrailBlazer

1 Answer

2001 A4 thermostat location


Hello! Ignore my request regarding the engine size, The thermostat is well hidden..Standard labor to replace is 2.0 hours...Thermostat is part # 06B-121-111-G....
Step 1: Drain coolant...

Remove bottom belly pan... Remove coolant reservior tank cap... Remove plastic clip holding coolant sensor in place at lower radiator hose/pipe... With bucket/catch pan underneath, remove sensor and let coolant drain...


Step 2: Remove upper radiator hose...

Remove the small hose connecting the coolant reservoir to the upper radiator hose... Then remove the larger hose from the hard pipe running along the intake and from the radiator... You'll need to pop up (but not off) the metal clip holding the hose to the radiator, then firmly pull back..

Step 3: Remove intake hose (throttle body to inter-cooler)...

Remove driver's side headlight (not necessary but makes it a lot easier). Loosen clamp at each end and remove hose...

Step 4: Remove throttle body...

Remove electrical connector and 4 hex bolts (5mm)...

Step 5: Loosen serpentine belt and slip off of alternator...

Use a box-end or adjustable wrench on tensioner, pull to the right... Carefully slip belt off alternator (towards front of car). Allow to hang loose below...

Step 6: Remove alternator bolts...

Remove 4 bolts holding alternator to bracket...

Step 8: Remove vertical support piece from intake manifold to block...

Remove the two bolts holding the support piece (6mm hex)...

Step 9: Remove bolt from metal hose on thermostat; remove bolt from top of oil cooler...

This will allow you to move the hard pipe away from thermostat... Then wiggle it free from the pipe afterwards...

Bolt holding the hard pipe on the right, two bolts holding the thermostat to the block on the left...

Step 10: Remove upper and lower hoses from t-stat. Remove electrical connector on back side...

Step 11: Remove 2 bolts holding thermostat to block, and remove thermostat...See photo below...Guru...Saailer







10_23_2011_1_16_37_pm.jpg

Oct 23, 2011 | 2001 Audi A4

1 Answer

Where is the the thermostat on a 2.0 , 2000 vw beetle ? Thank you


First time you might check the thermostat operating.

Heed of antifreeze coolant temperature!!!


The thermostat location for 2000 VW Beetle 2.0L is on back of the alternator at the bottom side of the bracket.

IMPORTANT NOTE: It is NOT necessary to replace the alternator if you want to change the thermostat !!!

Thermostat checking:
1. Cold engine. Start up the engine and watch of the water temp indicator. After first value 60 Celsius Degree you still warm up the engine until the lifter (pointer) reach 80 C deg. (second mark after 60 C deg.). At this time you let engine running at idle speed and check with your hand the thermostat plastic housing and hose temperature in bottom left side of the engine. Heed of alternator driving belt and ventilator fan !!!
2. If the thermostat is good the hose must be cold until the water temp indicator reach almost 90 C deg.
3. The thermostat opening temperature is 87 C deg.
4. If the hose is already warm the thermostat is out of order.

Thermostat location, Part number: 050 121 113 C, in german - "Kuehlregle".

Remark: 87 ... 102 Celsius deg.
Price around $35:

tdisline_55.png

Important note: Always replace the thermostat seal, position 7 in the above picture.

Sep 27, 2011 | 2000 Volkswagen Beetle

1 Answer

Audi a4 1.9 tdi thermostat diagramm


First time you might check the thermostat operating.

Heed of antifreeze coolant temperature!!!


The thermostat location for a 2000 Audi A4 1.9 TDI is on back of the alternator at the bottom side of the bracket.

IMPORTANT NOTE: It is NOT necessary to replace the alternator if you want to change the thermostat !!!

Thermostat checking:
1. Cold engine. Start up the engine and watch of the water temp indicator. After first value 60 Celsius Degree you still warm up the engine until the lifter (pointer) reach 80 C deg. (second mark after 60 C deg.). At this time you let engine running at idle speed and check with your hand the thermostat plastic housing and hose temperature in bottom left side of the engine. Heed of alternator driving belt and ventilator fan !!!
2. If the thermostat is good the hose must be cold until the water temp indicator reach almost 90 C deg.
3. The thermostat opening temperature is 87 C deg.
4. If the hose is already warm the thermostat is out of order.

Thermostat location, Part number: 044121113, in german - "Kuehlregle" (Price around $25):
tdisline_211.jpg


Important note: Always replace the thermostat round seal, position 7 in the above picture.

Jul 06, 2011 | 2000 Audi A4

1 Answer

Water cooling system - where is the thermostat for the cooling system located. 6 cyclinder 2004 SLT


The thermostat is located on the driver's side of the engine. It is difficult to see, but it is behind the alternator. The lower radiator hose goes to a metal tube, that is part of the thermostat housing. Below is a picture of thermostat and temp sensor location (alternator removed).


freddyboy61_4.jpg

May 21, 2011 | 2004 GMC Envoy

1 Answer

IM TRYING TO REPLACE THE THERMOSTAT ON MY 2004 ENVOY WHERE IS IT LOCATAED EXACTLY


The thermostat on this vehicle's In-line 6 cylinder engine is on the driver's side of the engine, below & behind the alternator. You have to remove the alternator to gain access to the thermostat housing. You also need to disconnect the battery before you remove the alternator to avoid sparks and shorts.

Most directions outline removal of the alternator to gain easy access to the hose clamps, bolts and housing of the thermostat. I have located a site that after free registration, has detailed instructions on how to do this job, and the link below that describes an easier method with photos. Check out:

http://forums.trailvoy.com/showthread.php?t=54225&highlight=replace+thermostat

Mar 15, 2011 | 2004 GMC Envoy

2 Answers

I can't find the thermostat on my 1996 jetta gls


On 1996 VW JETTA,The thermostat is located at the engine end of the lower radiator hose (passenger side). If the car has power-steering, then power steering pump and mounting bracket are to be removed to get to the thermostat housing. The thermostat is at the end of the bottom hose, in the water pump housing. Follow the lower radiator hose to the water pump housing. There are three bolts that are very difficult to navigate around. The thermostat is located behind those bolts.
----------------- Thank you.

Jan 31, 2011 | 1996 Volkswagen Jetta

1 Answer

Where is my thermostat in 2000 jetta 1.9 liter


Heed of antifreeze coolant temperature!!!
First time you might check the thermostat operating.
The thermostat location for VW Jetta 1.9 TDI - AJM engine, is on back of the alternator at the bottom side of the bracket.
IMPORTANT: It is NOT necessary to replace the alternator if you want to change the thermostat !!!
Thermostat checking:
1. Cold engine. Start up the engine and watch of the water temp indicator. After first value 60 Celsius Degree you still warm up the engine until the lifter (pointer) reach 80 C deg. (second mark after 60 C deg.). At this time you let engine running at idle speed and check with your hand the thermostat plastic housing and hose temperature in bottom left side of the engine. Heed of alternator driving belt and ventilator fan !!!
2. If the thermostat is good the hose must be cold until the water temp indicator reach almost 90 C deg.
3. The thermostat opening temperature is 87 C deg.
4. If the hose is already warm the thermostat is out of order.

Thermostat location, Part number: 044121113, in german - "Kuehlregle" (Price around $25):

tdisline_179.jpg


Important note: Always replace the thermostat seal, position 7 in the above picture.

Please do rate my response. Thanks!

Jan 23, 2011 | 2000 Volkswagen Jetta TDI

1 Answer

WHERE IS THERMOSTAT LOCATED ON 2000 VW PASSAT AJM ENGINE


Heed of antifreeze coolant temperature!!!
First time you might check the thermostat operating.
The thermostat location for VW Passat 4Motion 1.9 TDI - AJM engine, is on back of the alternator at the bottom side of the bracket.
IMPORTANT: It is NOT necessary to replace the alternator if you want to change the thermostat !!!
Thermostat checking:
1. Cold engine. Start up the engine and watch of the water temp indicator. After first value 60 Celsius Degree you still warm up the engine until the lifter (pointer) reach 80 C deg. (second mark after 60 C deg.). At this time you let engine running at idle speed and check with your hand the thermostat plastic housing and hose temperature in bottom left side of the engine. Heed of alternator driving belt and ventilator fan !!!
2. If the thermostat is good the hose must be cold until the water temp indicator reach almost 90 C deg.
3. The thermostat opening temperature is 87 C deg.
4. If the hose is already warm the thermostat is out of order.

Thermostat location, Part number: 044121113, in german - "Kuehlregle" (Price around $25):

tdisline_142.jpg
Important note: Always replace the thermostat seal, position 7 in the above picture.

Please do rate my response. Thanks!

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2 Answers

Replace thermostat on 2004 gmc envoy


The thermostat on this vehicle's (the Envoy & Trailblazer are essentially the same vehicle) In-line 6 cylinder engine is on the driver's side of the engine, below & behind the alternator. It is not found in the typical location (which may be for the 8 cylinder engine), in an answer above.

Most directions outline removal of the alternator to gain easy access to the hose clamps, bolts and housing of the thermostat. I have located a site that after free registration, has detailed instructions on how to do this job, and the link below that describes an easier method with photos. Check out:

http://forums.trailvoy.com/showthread.php?t=54225&highlight=replace+thermostat

Jul 17, 2009 | 2004 GMC Envoy

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