Fan delay relay...GM only part?

[Snorman]

I've noticed that now my fan isn't kicking on quite frequently. Often, it runs for about 5 minutes after I shut off the car (even with a 160 stat), other times it doesn't run at all. SM is showing coolant temps in the 180's and 190's when cruising in light traffic.
I suspect the fan delay relay is bad.
Are these only available through GM or a GM supplier, or do the auto parts retail chains sell these relays (i.e. PepBoys, Strauss, Auto Zone)?
Could it also be the fan temp or coolant temp switch?
S.

 

[Turbo Brian]

Based on my readings, the fan delay relay only comes on when the temp exceeds 205 degrees on engine shut down. It is possible that with a 160 thermostat, there will be times that the engine does not reach that temp on shutdown.

 

[Snorman]

I've had the SM on for three days, and although the car hasn't hit 205, the fan has kicked on after turning off the motor a few times.
The fan rarely kicks on when the motor is running, even with temps over 195. When it does kick on, the temps drop down significantly.
I ordered a new GM fan delay relay from Kirbans today. If that doesn't get my temps down, I need to look at a new radiator or hardwiring the fan to run on high when the motor is running.
S.

 

[BLACK6PACK]

I think these relays are worthless. I've got a brand new relay on my car, and it never works like it should. I turn the key forward to roll down the windows, and the fan kicks on, and I never even turned on the engine. Just wire it up to a switch so that you have real control over it.

 

[blackbuick87]

If you turn the A/C on it should come on. If not it may be bad