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How to remove the thermostat - Venture Chevrolet Cars & Trucks

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  • Ryan Beltran
    Ryan Beltran May 11, 2010

    what thermostat is it the a/c thermostat or the engine thermostat?

  • Rick Reichlein May 11, 2010

    Can you please state the year and engine, Thanks, Rick

  • yadayada
    yadayada May 11, 2010

    what engine and what year

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Remove cap radiator when cold
Drain radiator well below thermostat level.
Disconnect rubberhose from thermostat housing to radiator. Do this at radiator side first cautious to prevent blocked fluid to run over engine . Undo radiator housing cover. Be sure to have new spare gasket. And right type new thermostat with corresponding temperature opening rating.
Take out thermostat. Put new one in in the good position not reversed down (it opens at temperaturing pupping upwards. Check for presence of de-airation hole with little valve.
Put gasket and cover . Tighten the bolts without killing them. Fill radiator to level. Leave a while do de-air leveling over that little hole valve in thermostat I mentioned. I necessarry fill again.

Whilst doing this job be sure the seizure of old thermostat was not due to broken down cooling pump, broken radior fan with activating switch on engine block. At times they go together.

Don't fill with pure water unless for backflushing system. Otherwise vapor bellows in th system will crack the engine block. Some hotspots exceed water vapor point!!

Posted on Apr 18, 2009

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1 Answer

Where is the thermostat in a oldsmoble alero?


3.4L Engine
  1. Remove the thermostat housing to intake manifold bolts.
  2. Remove the thermostat housing outlet and thermostat


3.1L Engine
  1. Remove thermostat housing-to-intake manifold attaching bolt and nut, then remove the housing.
  2. Remove the thermostat.


2.2L Engine
  1. Remove the thermostat housing to water pump feed pipe bolts.
  2. Remove the thermostat housing to water pump feed pipe.
  3. Remove the thermostat.

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using Fixya, and have a nice day.

Nov 02, 2011 | 2000 Oldsmobile Alero

1 Answer

How to get the thermostat housing to disconnect. We have taken all bolts loose but will not come apart.


Not sure if you have the 2.7L or the 3.5L so I'll post for both sizes for you:


2.7L Removal procedures
  1. Drain cooling system.
  2. Remove radiator lower hose from thermostat housing.
  3. Remove nuts from heater tube flange studs.
  4. Loosen starter bolt at heater tube bracket.
  5. Pull heater tube out of thermostat housing and position out of the way.
  6. Remove bolt and two studs.
  7. Remove thermostat housing, O-ring and thermostat.
  8. Remove thermostat housing bolts.

3.5L Removal procedures

  1. Drain cooling system.
  2. Raise vehicle on hoist.
  3. Disconnect electrical connectors from engine oil and power steering pressure switches.
  4. Disconnect radiator and heater hoses from thermostat housing.
  5. Remove thermostat housing bolts.
  6. Remove housing, thermostat, and gasket.
NOTE:
The OEM thermostat is staked in place at the factory. To ensure proper seating of replacement thermostat, carefully remove the bulged metal from the thermostat housing using a suitable hand held grinder. It is not necessary to restake the replacement thermostat into the thermostat housing

May 07, 2011 | 2003 Dodge Intrepid

2 Answers

Where is thermostat on my 2005 chevy classic


Thermostat Removal & Installation 2.2L Engine 2004-2005 To Remove:
  1. Drain the cooling system. chevy_cav_02-04_tstat.gif
  2. Remove the thermostat housing-to-water pump feed pipe bolts. chevy_cav_02-04_feedpipe.gif
  3. Remove the water pump feed pipe from the thermostat housing .
  4. Remove the thermostat from the housing.
To Install:
  1. Install the thermostat on the housing.
  2. Install the water pump feed pipe on the thermostat housing with the mounting bolts. Tighten 89 in-lb (10 Nm).
  3. Fill the cooling system.
2006-2007 To Remove:
  1. Drain the cooling system.
  2. Disconnect the radiator outlet hose from the surge tank and thermostat housing cover. Thermostat & cover gm-03-39-3601.gif
  3. Remove the mounting bolts and remove the thermostat housing cover.
  4. Remove the thermostat from the housing. Discard the O-ring.
To Install:
  1. Using a new O-ring, install the thermostat on the housing.
  2. Install the thermostat housing cover with the mounting bolts. Tighten 89 in-lb (10 Nm).
  3. Connect the radiator outlet hose to the surge tank and thermostat housing cover.
  4. Fill the cooling system.
3.5L Engine (LZ4) W/ Variable Valve Timing & 3.9L Engine To Remove:
  1. Drain the cooling system.
  2. Remove the air cleaner outlet duct.
  3. Disconnect the radiator outlet hose from the thermostat housing. Thermostat 3.9L gm-03-00-3054.gif
  4. Remove the mounting bolt/stud and remove the thermostat housing.
  5. Remove the thermostat from the engine.
  6. Clean the sealing surfaces.
To Install:
  1. Using a new gasket, install the thermostat on the engine.
  2. Install the thermostat housing with the mounting bolts. Tighten 89 in-lb (10 Nm).
  3. Connect the radiator outlet hose to the thermostat housing.
  4. Install the air cleaner outlet duct.
  5. Fill the cooling system.
  6. Check the cooling system for leaks.
3.5L Engine (LX9) W/O Variable Valve Timing To Remove:
  1. Drain the coolant.
  2. Disconnect the radiator hose from the thermostat housing. Thermostat 3.5L gm_mv_ven_tstat.gif
  3. Remove the mounting bolt/stud and remove the thermostat housing.
  4. Remove the housing gasket.
  5. Remove the thermostat.
  6. Clean the mating surfaces.
To Install:
  1. Install the thermostat on the engine.
  2. Install the thermostat housing and gasket with the mounting bolts. Tighten 18 ft-lb (25 Nm).
  3. Connect the radiator hose to the thermostat housing.
  4. Fill the cooling system.
  5. Check the cooling system for leaks.

Jan 29, 2011 | 2005 Chevrolet Malibu

1 Answer

Thermostat replacement 2002 rendezvous


Thermostat Removal & Installation 3.4L & 3.5L Engine To Remove:
  1. Drain the coolant below the level of the thermostat.
  2. Remove the air cleaner and duct assembly.
  3. Remove the exhaust crossover pipe.
  4. Disconnect the radiator hose from the thermostat housing. gm_mv_ven_tstat.gif

  5. Remove the mounting bolts and remove the thermostat housing.
  6. Remove the housing gasket.
  7. Remove the thermostat.
  8. Clean the mating surfaces.
To Install:
  1. Install the thermostat on the engine. NOTE: Apply RTV sealer to the thermostat housing bolt threads.
  2. Install the thermostat housing and gasket with the mounting bolts. Tighten 18 ft-lb (25 Nm).
  3. Connect the radiator hose to the thermostat housing.
  4. Install the exhaust crossover pipe.
  5. Install the air cleaner and duct assembly.
  6. Fill the cooling system.
  7. Check the cooling system for leaks.
3.6L Engine To Remove:
  1. Remove the air cleaner.
  2. Remove the throttle body.
  3. Remove the heater pipes.
  4. Remove the coolant inlet pipe. Thermostat 3.6L gm-03-36-2447.gif

  5. Remove the thermostat mounting bolts and remove the thermostat.
  6. Clean the thermostat and heater pipe mating surfaces.
To Install:
  1. Place the thermostat in the housing with a new gasket.
  2. Install the thermostat and gasket on the engine with the mounting bolts. Tighten 89 in-lb (10 Nm).
  3. Install the coolant inlet pipe.
  4. Install the heater pipes.
  5. Install the throttle body.
  6. Install the air cleaner.
  7. Fill the cooling system and perform a leak test.
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Dec 19, 2010 | 2002 Buick Rendezvous

1 Answer

Where to locate the thermostat on an 03 pontiac grand am?


Not sure which engine you have so please pick the appropriate engine:

2.2L Engine
  1. If equipped with an automatic transaxle, remove the exhaust manifold, as outlined in this section.
  2. Drain the cooling system.
  3. Remove the thermostat housing to water pump feed pipe bolts.
  4. Remove the thermostat housing to water pump feed pipe.

2112e0a.gif

Thermostat mounting-2.2L engine


3.1L Engines

  1. Disconnect the negative battery cable.
  2. Drain the cooling system to a level below the thermostat housing.
  3. Remove the air cleaner assembly.
  4. Disconnect the surge tank line from the thermostat housing.
  5. Remove thermostat housing-to-intake manifold attaching bolt and nut, then remove the housing.
  6. Remove the thermostat.

3.4L Engine
  1. Drain the cooling system.
  2. Remove the air cleaner.
  3. Remove exhaust crossover pipe.
  4. Disconnect the surge tank line fitting from the coolant outlet.
  5. Remove the thermostat housing to intake manifold bolts.
  6. Remove the thermostat housing outlet and thermostat
  7. Clean the mating surfaces.

Nov 01, 2010 | 2003 Pontiac Grand Am

1 Answer

What do i do when its over heating? how do i install thermostat?


Thermostat Removal & Installation 3.4L & 3.5L Engine To Remove:
  1. Drain the coolant below the level of the thermostat.
  2. Remove the air cleaner and duct assembly.
  3. Remove the exhaust crossover pipe.
  4. Disconnect the radiator hose from the thermostat housing. gm_mv_ven_tstat.gif

  5. Remove the mounting bolts and remove the thermostat housing.
  6. Remove the housing gasket.
  7. Remove the thermostat.
  8. Clean the mating surfaces.
To Install:
  1. Install the thermostat on the engine. NOTE: Apply RTV sealer to the thermostat housing bolt threads.
  2. Install the thermostat housing and gasket with the mounting bolts. Tighten 18 ft-lb (25 Nm).
  3. Connect the radiator hose to the thermostat housing.
  4. Install the exhaust crossover pipe.
  5. Install the air cleaner and duct assembly.
  6. Fill the cooling system.
  7. Check the cooling system for leaks.
3.6L Engine To Remove:
  1. Remove the air cleaner.
  2. Remove the throttle body.
  3. Remove the heater pipes.
  4. Remove the coolant inlet pipe. Thermostat 3.6L gm-03-36-2447.gif

  5. Remove the thermostat mounting bolts and remove the thermostat.
  6. Clean the thermostat and heater pipe mating surfaces.
To Install:
  1. Place the thermostat in the housing with a new gasket.
  2. Install the thermostat and gasket on the engine with the mounting bolts. Tighten 89 in-lb (10 Nm).
  3. Install the coolant inlet pipe.
  4. Install the heater pipes.
  5. Install the throttle body.
  6. Install the air cleaner.
  7. Fill the cooling system and perform a leak test.
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Sep 18, 2010 | 2002 Pontiac Aztek

2 Answers

Where is the thermostat


Please choose the correct steps for the size of engine that you have:

4.5L & 4.9L Engines
  1. Drain the coolant to a level below the thermostat housing.
  2. It may be necessary to remove the upper air filter assembly on some models.
  3. Remove the 2 bolts securing the upper thermostat housing to the lower housing.
  4. Remove the upper thermostat housing.
  5. Remove the thermostat and O-ring from the lower housing.

280c20b.gif
Thermostat installation—4.5L and 4.9L engines

To install:
  1. Install the thermostat and a new O-ring to the lower housing.
  2. Install the upper thermostat housing to the lower housing. Tighten the thermostat housing bolts to 20 ft. lbs. (27 Nm).
  3. Refill the cooling system using a 50/50 mixture of water and ethylene glycol antifreeze.
  4. Start the engine and check for coolant leaks. Allow the engine to come to normal operating temperature. Recheck for coolant leaks.

4.6L Engines
  1. Drain the coolant to a level below the thermostat housing.
  2. On some vehicles, access is easier if the front-end beauty panel and the air cleaner are removed.
  3. Remove the 2 bolts securing the thermostat housing to the intake manifold.
  4. Remove the thermostat housing.
  5. Remove the thermostat and O-ring from the housing.

57a3857.gif
Thermostat installation—4.6L Engine


3b692a6.gif
Loosen the upper radiator hose clamp at the thermostat housing


d0a7ab0.gif
Remove the upper radiator hose clamp from the thermostat housing


d22f120.gif
Remove the thermostat housing retaining bolts and . . .





d497806.gif
. . . remove the thermostat housing from the engine


c2d4b5e.gif
Separate the thermostat from the housing

To install:
  1. Install the thermostat and new O-ring to the housing.
  2. Install the thermostat housing to the intake manifold. Tighten the thermostat housing bolts to 18 ft. lbs. (25 Nm).
  3. Refill the cooling system using a 50/50 mixture of water and ethylene glycol antifreeze.
  4. Install the air cleaner and beauty panel, if removed.
  5. Start the engine and check for coolant leaks. Allow the engine to come to normal operating temperature. Recheck for coolant leaks.

May 23, 2010 | 1996 Cadillac DeVille

1 Answer

How to change the thermostat


Alero, Grand Am 1999-2005 Thermostat - Removal & Installation 2.2L Engine
  1. If equipped with an automatic transaxle, remove the exhaust manifold, as outlined in this section.
  2. Drain the cooling system.
  3. Remove the thermostat housing to water pump feed pipe bolts.
  4. Remove the thermostat housing to water pump feed pipe.

    d1db35e.jpg
    Fig. Thermostat mounting-2.2L engine
  5. Remove the thermostat.

To install:
  1. Install the thermostat.
  2. Install the thermostat housing to water pump feed pipe.
  3. Install the thermostat housing to water pump feed pipe bolt. Tighten the thermostat housing to water pump feed pipe bolt to 89 inch lbs. (10 Nm).
  4. If equipped with an automatic transaxle, install the exhaust manifold, as outlined in this section.
  5. Fill the cooling system.

3.1L Engines
  1. Disconnect the negative battery cable.
  2. Drain the cooling system to a level below the thermostat housing.
  3. Remove the air cleaner assembly.
  4. Disconnect the surge tank line from the thermostat housing.
  5. Remove thermostat housing-to-intake manifold attaching bolt and nut, then remove the housing.
  6. Remove the thermostat.

To install:
  1. Clean all gasket surfaces completely.
  2. Insert the thermostat in the intake manifold.
  3. Attach the thermostat housing to the intake manifold.
  4. Install the mounting bolt and nut. Tighten to 18 ft. lbs. (25 Nm).
  5. Install the air cleaner assembly.
  6. Connect the surge tank line to thermostat housing.
  7. Refill the cooling system.
  8. Connect the negative battery cable, remove the radiator cap, then start the engine. Allow the engine to run with radiator cap removed, until the upper radiator hose becomes hot (thermostat open). With the engine idling, add coolant to the radiator until the level is up to the bottom of the filler neck.
  9. Install the radiator cap, making sure the arrows line up with the overflow tube.

3.4L Engine
  1. Drain the cooling system.
  2. Remove the air cleaner.
  3. Remove exhaust crossover pipe.
  4. Disconnect the surge tank line fitting from the coolant outlet.
  5. Remove the thermostat housing to intake manifold bolts.
  6. Remove the thermostat housing outlet and thermostat
  7. Clean the mating surfaces.

To install:
  1. Install the thermostat and housing outlet.
  2. Install the thermostat housing bolts. Tighten the thermostat housing bolts to 18 ft. lbs. (25 Nm).
  3. Install exhaust crossover pipe.
  4. Connect the surge tank line fitting to the coolant outlet. Tighten the fittings to 15 ft. lbs. (21 Nm).
  5. Install the air cleaner.
  6. Fill the cooling system.
  7. Inspect the system for leaks.
Hope this help (remember comment and rated this).

Apr 04, 2010 | 1999 Oldsmobile Alero

1 Answer

How do I remove the thermostat from my 2001 chevy venture


2001 Chevrolet Truck Venture FWD 3.4L SFI 6cyl

Removal & Installation

  1. Remove the air cleaner and duct assembly.
  2. Drain the coolant until the coolant level is below the thermostat.
  3. Remove the crossover exhaust pipe.
  4. Remove the radiator hose from the thermostat housing.
  5. Remove the thermostat housing bolts and clean any sealer from the bolt threads.
    30d8f30.jpg

    Fig. Remove the housing bolts
  6. Remove the thermostat housing and gasket.
  7. Remove the thermostat.
  8. Clean the mating surfaces.

To install:


6c98478.jpg

Fig. The removal and installation of the thermostat
  1. Install the thermostat.
  2. Install the thermostat housing and gasket.
    NOTE Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
  3. Install the thermostat housing bolts and tighten them to 18 ft. lbs. (25 Nm).
  4. Install the radiator hose to the thermostat housing.
  5. Install the crossover exhaust pipe.
  6. Install the air cleaner and duct assembly.
  7. Fill the cooling system.

3.5L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Remove the air cleaner intake duct.
  3. Partially drain the cooling system.
  4. Remove the radiator inlet hose from the thermostat housing.
  5. Remove the thermostat housing bolts.
  6. Remove the thermostat.
  7. Clean and inspect the thermostat housing gasket mating surfaces.
To install:
  1. Install the thermostat.
  2. Install the thermostat housing.
  3. Install the thermostat housing bolts and tighten to 18 ft. lbs. (25 Nm).
  4. Install the radiator inlet hose to the thermostat housing.
  5. Install the air cleaner intake duct.
  6. Fill the cooling system.
  7. Start the engine and check for leaks.
3.9L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Drain the cooling system.
  3. Release the tension on the hose clamp at the thermostat housing and remove coolant hose.
  4. Remove the thermostat housing mounting bolts and remove the thermostat housing.

    5734720.jpg
    Fig. Remove the thermostat housing to access the thermostat-3.9L engine shown
  5. Remove the thermostat.
To install:
  1. Install the thermostat.
  2. Install the thermostat housing and tighten the bolts to 18 ft. lbs. (25 Nm).
  3. Install the coolant hose to the thermostat housing and install the hose clamp.
  4. Refill the cooling system to the correct level.
  5. Start the engine and check for leaks.

I hope help you whit thie (remember rated this help) Have a nice day and good luck.

Sep 23, 2009 | 2001 Chevrolet Venture

1 Answer

NEED LOCATION OF THERMOSTAT IN 1991 CADILLAC SEVILLE


  1. Drain the coolant to a level below the thermostat housing.
  2. On some vehicles, access is easier if the front-end beauty panel and the air cleaner are removed.
  3. Remove the 2 bolts securing the thermostat housing to the intake manifold.
  4. Remove the thermostat housing.
  5. Remove the thermostat and O-ring from the housing.
0900c15280090476.jpgThermostat installation—4.6L Engine 0900c15280090477.jpgLoosen the upper radiator hose clamp at the thermostat housing 0900c15280090478.jpgRemove the upper radiator hose clamp from the thermostat housing 0900c15280090479.jpgRemove the thermostat housing retaining bolts and . . . 0900c1528009047a.jpg. . . remove the thermostat housing from the engine 0900c1528009047b.jpgSeparate the thermostat from the housing To install:
  1. Install the thermostat and new O-ring to the housing.
  2. Install the thermostat housing to the intake manifold. Tighten the thermostat housing bolts to 18 ft. lbs. (25 Nm).
  3. Refill the cooling system using a 50/50 mixture of water and ethylene glycol antifreeze.
  4. Install the air cleaner and beauty panel, if removed.
  5. Start the engine and check for coolant leaks. Allow the engine to come to normal operating temperature. Recheck for coolant leaks.

Nov 27, 2008 | 1992 Cadillac DeVille

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