How to replace thermostat.

Tiny
YULIANRG
  • MEMBER
  • 2004 GMC SAVANA
  • 4.3L
  • V6
  • RWD
  • AUTOMATIC
  • 180,000 MILES
I have code P0134.
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Sunday, January 17th, 2016 AT 5:29 AM

5 Replies

Tiny
WRENCHTECH
  • EXPERT
What does a P0134 have to do with a thermostat?
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Sunday, January 17th, 2016 AT 6:22 AM
Tiny
YULIANRG
  • MEMBER
Sorry P0128.
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Sunday, January 17th, 2016 AT 6:24 AM
Tiny
WRENCHTECH
  • EXPERT
No engine size listed
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Sunday, January 17th, 2016 AT 6:26 AM
Tiny
YULIANRG
  • MEMBER
4.3 v6
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Sunday, January 17th, 2016 AT 6:27 AM
Tiny
WRENCHTECH
  • EXPERT
Thermostat Replacement (4.3L)

Removal Procedure

Remove the air cleaner and the duct assembly.
Partially drain the coolant.
Remove the coolant recovery reservoir.
Disconnect the radiator hose from the thermostat housing.

https://www.2carpros.com/images/external/113304386.jpg.gif

Remove the bolts attaching the thermostat housing to the thermostat.
Remove the thermostat housing.
Remove the thermostat.
Clean the gasket mating surfaces.

Installation Procedure

Notice: Refer to Coolant Addition Notice in Service Precautions.

Install the thermostat.
Install the thermostat housing to the intake manifold.
Notice: Refer to Fastener Notice in Service Precautions.

Install the bolts to the housing.

Tighten the bolts to 25 Nm (18 ft. lbs.) .

Connect the radiator hose to the thermostat housing.
Install the coolant recovery reservoir.
Install the air cleaner and the duct.
Refill the cooling system.
Bleed the air from the cooling system.
Inspect the thermostat housing and the gasket for coolant leaks.
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Sunday, January 17th, 2016 AT 6:30 AM

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