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Getting code P1481, No. My truck GMC Envoy is making a loud…

Customer Question
Getting code P1481 Mechanic's...

Getting code P1481

Mechanic's Assistant: Just to clarify, what's the exact code? And have you tried to reset it?

No. My truck GMC Envoy is making a loud banging noise.code tester came up with P1481

Mechanic's Assistant: What year is your Envoy?

2003

Mechanic's Assistant: Are you fixing your Envoy yourself? What have you tried so far?

My brother is a mechanic. Changed all sensors, water pump, temperature gadge, oil, filters,

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Changed all spark plugs and their housing...

Submitted: 8 months ago.Category: GMC
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Answered in 1 minute by:
9/14/2017
GMC Mechanic: Mike V., Auto Service Technician replied 8 months ago
Mike V.
Mike V., Auto Service Technician
Category: GMC
Satisfied Customers: 27,059
Experience: 25 years of experience, Certified Subaru Technician and Nissan factory trained.
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Customer reply replied 8 months ago
Ok
GMC Mechanic: Mike V., Auto Service Technician replied 8 months ago

This code means there is a loss of cooling fan speed signal.

This could be due to a bad cooling fan, or the fan clutch assembly. This might also make a banging sound as it's kicking on and off, especially at the wrong time or inconsistent times. It's not unusual for this fans to fail.

Please let me know if there is anything else I can do to help.
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