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Davo
Davo, Master technician
Category: Chevy
Satisfied Customers: 3253
Experience:  ASE Master Technician also L1 Advanced Engine Performance Specialist
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2001 SILVERADO 1500: I HAVE TO ASSIST SERVO MANUALY.
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2001 SILVERADO 1500 4x4 Z-71
THE HEATER CONTROL VALVE STICKS OPEN, I TURN THE SILECTER TO CLOSE AND I HAVE TO ASSIST SERVO MANUALY.
NEED TO FIND THE PARTS "WHOLESALE"
AND DETAILS ON R&R (REMOVE AND REPLACE!
VIN # XXXXX ON TRUCK

The actuator is held on by two screws.If you can touch it you can remove the two 5.5 mm screws.Just don't plug it in before it's mounted on the case.That can ruin it.Call the local auto parts store dorman makes them aftermarket.You can order one from www.rockauto.com If you need more instructions let me know.

 

Customer: replied 10 years ago.
Reply to Davo's Post: you touch base on the actuator,your half way there, the valve it's self: how to:remove and replace the control valve?
Are you trying to replace the control panel in the dash?Any GM truck newer than 1998 doesn't use a valve in the heater hose.Here is the heater water valve from a 98.

Heater Water Valve Replacement

  1. Drain the cooling system.
  2. Remove the access panel nut near the pollen filter.
  3. Remove the access panel.
    Object Number: 153285  Size: SH

  4. Remove the following components from the hot water flow control valve:The vacuum hose.The remaining hose clamps.The remaining hoses
  5. Remove the hot water flow control valve.

    Object Number: 153285  Size: SH

  1. Install the hot water flow control valve.
  2. Install the following hot water flow control valve components: The hoses.The hose clamps.The vacuum hose
  3. Install the access panel.
  4. Install the access panel nut until fully seated and not stripped.
  5. Fill the cooling system.
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