I have installed about 4 fan clutches ('03 Envoy 4x4, 4.2L). Recent one in May. Code P1481 came back within 2 weeks. The most recent one was purchased online (rockauto). Any suggestions or advice? thanks
P1481
- Thread starter e019404
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Moved your post to a new thread so it doesn't hijack the other one.
Did you run a search here and on trailvoy for P1481 and read the many threads?
Did you replace fan clutches that you knew were internally bad, because P1481 can also come from bad wiring in the last foot from the vehicle harness to the fan clutch, and also in the wiring and connectors to the PCM.
Are the suppliers just giving you clutches for free?
Was the problem ever troubleshot with a Tech II tool commanding the fan RPM up and down, or just by reading the code?
Did you run a search here and on trailvoy for P1481 and read the many threads?
Did you replace fan clutches that you knew were internally bad, because P1481 can also come from bad wiring in the last foot from the vehicle harness to the fan clutch, and also in the wiring and connectors to the PCM.
Are the suppliers just giving you clutches for free?
Was the problem ever troubleshot with a Tech II tool commanding the fan RPM up and down, or just by reading the code?e019404 said:
Check out this thread:
http://gmtnation.com/f23/p1484-caused-loose-wire-fan-clutch-pigtail-fixed-soldering-8056/
Unless you're getting a new pigtail with every clutch - I'd first suspect the pigtail, not the clutch. Next, I'd suspect the wiring from the PCM to the pigtail. The pigtail vibrates an awful lot (especially if your fan or water pump are out of balance even slightly).
While my code was a P1484 I suspect that you'll find there's a wiring problem and that it should be fixable "the old fashioned way".
I have inspected and cleaned the pigtail and connector near the fan clutch. Could not find anything. I don't have a tech II tool, just a code reader. I did change the relay and fuse. I think the next step is to try to find a good wiring diagram and check the harness back toward the PCM. Then maybe take it to a shop with a tech II tool.
Thanks for the advice
Thanks for the advice
e019404 said:
Did you check every wire in the pigtail with an ohm meter while flexing the pigtail? If not, you have not adequately checked it. I didn't discover my wiring issue until I metered the pigtail while flexing it. I found variable resistance on one wire. Only after I pulled the plug apart could I see where the wire was broken.
Shop said it was the fan clutch. Recommend buying original equipment fan clutch which I assume is AC - Delco? Any suggestions on where to purchase and approximately how much I should pay? Dealer only or other source? Thanks alot.
e019404 said:
Rockauto.com
Behr/Hayden appears to be the favorite for those of us without an efan mod.
There was a 5% off code just posted a day or two ago
e019404 said:
Behr-Hayden is what came in mine from the factory. I got mine from Amazon for about 150. Its around 185 right now. And its a Made in USA part!
Amazon.com: Hayden, Inc. 3200 Thermal Fan Clutch: Automotive
whatever happened ??? did you find out the fix?
would be nice to know what worked or what it turned out to be
would be nice to know what worked or what it turned out to be