Overheating

Hi,

It sounds like the cooling fans are the cause of it running hot. If it only happens when at a stop or slow speeds, that is the likely cause.

Now, you mentioned that you jumped the fans and they didn't work. By that, do you mean you ran power directly to them? If that is the case, the fan motors must be bad. If you put power directly to them, they should work.

Here are the directions specific to replacing them for your vehicle. The attached pics correlate with the directions.

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2004 Pontiac Grand AM V6-3.4L VIN E
Procedures
Vehicle Engine, Cooling and Exhaust Cooling System Radiator Cooling Fan Service and Repair Procedures
PROCEDURES
The content of this article reflects the changes identified in TSB- 05-06-02-013 Dated: December 13, 2005

Cooling Fan Replacement

Caution: To help avoid personal injury or damage to the vehicle, a bent, cracked, or damaged fan blade or housing should always be replaced.

Removal Procedure

pic 1

1. Remove the upper transaxle cooler line from the radiator ONLY.

Pic 2

2. Remove the discharge hose to cooling fan shroud bolt ONLY.

Pic 3

3. Disconnect the cooling fan electrical connectors.
4. Raise the vehicle.
5. Remove the lower closeout panel.

Pic 4

6. Remove the lower transaxle cooler line from the radiator.

Pic 5

7. Remove the lower radiator support mounting panel.

Pic 6

8. Reposition the transmission oil cooler lines away from the fan shroud.
9. Push up on the cooling fan to remove the cooling fan shroud from the radiator.
10. Remove the cooling fan from the bottom of the vehicle.

Installation Procedure

pic 7

1. Install the cooling fan from the bottom of the vehicle.
2. Install the cooling fan shroud to the radiator.
3. Pull down on the cooling fan to snap it onto the radiator.

Pic 8

4. Install the lower radiator mounting panel.

Tighten the bolts to 10 N.M (89 lb in).

Pic 9

5. Install the lower transaxle cooler line to the radiator.

Tighten the fitting to 30 N.M (22 lb ft).

Pic 10

6. Connect the cooling fan electrical connectors.
7. Install the lower closeout panel.
8. Lower the vehicle.

Pic 11

9. Install the discharge hose to cooling fan shroud bolt.

Tighten the fitting to 10 N.M (89 lb in).

Pic 12

10. Install the refrigerant pressure sensor electrical connector.
11. Install the upper transaxle cooler line to the radiator.

Tighten the fitting to 30 N.M (22 lb ft).

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If I misunderstood what you meant, let me know. Also, let me know if you have other questions.

Take care and God Bless,

Joe