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BigBob, Service Manager/Technician
Category: Pontiac
Satisfied Customers: 4837
Experience:  Shop Manager with 25 years experience
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1999 pontiac grand am se: v6..a picture or diagram..step instructions

Customer Question

How do I replace the thermostat on a 1999 pontaic grand am se v6? Could you get me a picture or diagram or step by step instructions on how to?
Submitted: 7 years ago.
Category: Pontiac
Expert:  BigBob replied 7 years ago.

Removal Procedure

Caution: Refer to Battery Disconnect Caution in Service Precautions.

  1. Disconnect the negative battery cable.
  2. Drain and recover the coolant. Refer to Service and Repair.
  3. Remove the air cleaner assembly.
  4. Remove the surge tank line from the coolant outlet.graphic
  5. Remove the coolant outlet to the inlet manifold attaching bolts.
  6. Remove the coolant outlet.
  7. Remove the thermostat.
  8. Clean the inlet manifold mating surfaces.
  9. Clean the coolant outlet mating surfaces.
Installation Procedure

  1. Install the thermostat in the inlet manifold.
  2. Install the coolant outlet to the inlet manifold. Notice: Refer to Fastener Notice in Service Precautions.
  3. Install the attaching bolts.
    • Tighten the bolts to 25 Nm (18 ft. lbs.) .
  1. Install the air cleaner assembly.
  2. Install the surge tank line to the coolant outlet.
  3. Fill the engine with coolant. Refer to Service and Repair.
  4. Connect the negative battery cable.
    • Tighten the bolt to 16 Nm (12 ft. lbs.) .
  1. Inspect the system for leaks.
good luck,

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