Chevy

Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Chevy
This answer was rated:

How do i repair a P1481 Troble code on an 02 trailblazer

How do i repair a P1481 Troble code on an 02 trailblazer
Ask Your Own Chevy Question
Answered in 1 minute by:
12/25/2010
kalamykid
kalamykid, Shop Owner/ Tech
Category: Chevy
Satisfied Customers: 4,784
Experience: I HAVE OWNED MY OWN SHOP FOR OVER THREE YEARS. I HAVE THE TOOLS AND SOFTWARE TO ANSWERE ALMOST ANY Q
Verified

Is your truck a 2wd or a 4wd?

 

Ask Your Own Chevy Question
Customer reply replied 7 years ago
XXXXX
this code is set when the pcm detects the radiator fan is not spinning as fast as it is commanded to. The pcm controls the sped of the fan by varying the voltage and ground to it. When the pcm is telling the fan to spin at say 1200 rpms and the fan only spins 900 the code is set so you know there is a problem.
Ask Your Own Chevy Question
Customer reply replied 7 years ago
how do it reset the fan to or the clutch to repair the problem
The fan is the electric fan on the radiator. All you have to do is unplug the fan and replace the whole fan assembly. Then reset the codes for the pcm.
Ask Your Own Chevy Question
Customer reply replied 7 years ago
In looking at your answer. Then fan is running fast, sounds like a jet engine. i replaced the water pump. This is when the code came on. can it be reset with out the cost of the fan assembly as there was nothing wrong with it before
If the mechanical fan sounds like a jet plain then all you have to replace will be the fan clutch and not the electric fan. If the clutch has locked up it will make the sound you have described and will make the electric fan spin when it is not suppose to spin or make it spin faster then commanded to. You will need to pull the clutch fan off, and replace the clutch. then you can rest the pcm codes and they should not return. i am sorry i did not ask if the mechanical fan was working correctly as most often the electric fan is at fault for this problem.
kalamykid
kalamykid, Shop Owner/ Tech
Category: Chevy
Satisfied Customers: 4,784
Experience: I HAVE OWNED MY OWN SHOP FOR OVER THREE YEARS. I HAVE THE TOOLS AND SOFTWARE TO ANSWERE ALMOST ANY Q
Verified
kalamykid and 87 other Chevy Specialists are ready to help you
Ask your own question now
Ask kalamykid Your Own Question
kalamykid
kalamykid
kalamykid, Shop Owner/ Tech
Category: Chevy
Satisfied Customers: 4,784
4,784 Satisfied Customers
Experience: I HAVE OWNED MY OWN SHOP FOR OVER THREE YEARS. I HAVE THE TOOLS AND SOFTWARE TO ANSWERE ALMOST ANY Q

kalamykid is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money.

Todd LRochester NY

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

Chevy Technician

15,289 satisfied customers

GM Grand Master Technician 2007. 14 years experience.

Gary

Gary

Chevy Technician

9,357 satisfied customers

15 years GM master tech

Tim&#039;s Auto Repair

Tim's Auto Repair

mechanic

8,866 satisfied customers

Have owned a repair shop for 25 yrs.

Dave Nova

Dave Nova

Chevrolet Technician

7,092 satisfied customers

ASE Master Certification. GM World Class Certification

John

John

Master A.S.E Automotive technician

4,071 satisfied customers

A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician

Don - Mo Lurch

Don - Mo Lurch

Auto Mech / Electronics

2,918 satisfied customers

Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.

Ron Z.

Ron Z.

- Chevy Tech -

2,734 satisfied customers

18+yrs experience. State Inspector and Chevy Diagnostics

< Previous | Next >

Related Chevy Questions
I have a 2005 chevy express 3500 van 6.0 v8. How do you purge
I have a 2005 chevy express 3500 van 6.0 v8. How do you purge the air out of the cooling system after replacing the water pump? I had a bad time with that, and was afraid to overheat the engine.… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
2001 Chevy Tahoe water pump replacement
How to replace a water pump on 2001 Chevy Tahoe?… read more
Greg A.
Greg A.
Bachelor\u0027s Degree
37 satisfied customers
2002 gmc envoy fan clutch removal instructions
2002 gmc envoy fan clutch removal instructions… read more
Scott K
Scott K
Automotive Instructor
Vocational, Technical or Trade Scho
1,330 satisfied customers
My water from the radiator is mixing in with my engine oil.
My water from the radiator is mixing in with my engine oil … read more
kwiggins29059
kwiggins29059
Associate Degree
219 satisfied customers
Need to know where top water pump hoses go on 98 silverado
need to know where top water pump hoses go on 98 silverado 5.7 litre … read more
Joecamel90
Joecamel90
Technician
Associate Degree
24 satisfied customers
Equinox chevy 2006 suv overheating when driving. Water pump
water pump is new, new thermastat new reservour cap … read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
Equinox chevy 2006 suv overheating when driving. Water pump
Second opinion] equinox chevy 2006 suv overheating when driving … read more
Chris (aka - Moose)
Chris (aka - Moose)
Vocational, Technical or Trade Scho
108 satisfied customers
Radiator fan motor does not run when engine gets hot. I
radiator fan motor does not run when engine gets hot. I checked voltage on the connector and there was no voltage being supplied to the fan motor … read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
I need my engine rebuilt. Cracked the radiator and
I need my engine rebuilt. Cracked the radiator and overheated the engine. Lost power and won't run now. … read more
rpmdiag
rpmdiag
High school
7,274 satisfied customers
New engine, new starter, radiator, distributer ,coil, map
new engine, new starter, radiator, distributer ,coil, map sensor in '1993 Chevy Silverado K2500 7.4L 4L80E trans, setting code 42.. Also new ignition module … read more
Cesar Jimenez
Cesar Jimenez
Owner/CEO
Vocational, Technical or Trade School
99 satisfied customers
No heat. Water pump replaced recently. 2005. Not yet. Just
Not yet. Just have no heat from the vents. A/C works fine. … read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
I had my turbo, 02 sensor, and water pump changed then the
i had my turbo, 02 sensor, and water pump changed then the thermostat. my reservoir is full, car has beenrunning great. And now it i just got the a/c off due to high engine temp message, then it said … read more
roy
roy
Associate Degree
3 satisfied customers
I changed the water pump on my 2007 Chevrolet Malibu v6
I changed the water pump on my 2007 Chevrolet Malibu v6 3500. Now I have no heat. Can u help?… read more
Gary
Gary
Chevy Technician
Vocational, Technical or Trade Scho
9,357 satisfied customers
2003 Chevy with the 5.3 I replaced water pump alternator,
2003 Chevy with the 5.3 I replaced water pump alternator, tensioner, and idler pully checked the power steering pully no play in it but the truck keeps throwing the belt… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
My equinox is running hot, I've change the water pump,
my equinox is running hot, I've change the water pump, thermostat. system has been bleed, air pockets remover, by certified tech. now it running hot while just idling, but it doesn't stay hot goes bac… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,433 satisfied customers
My 92 Chevy pickup truck runs hot change radiator water pump
My 92 Chevy pickup truck runs hot change radiator water pump thermostat up and lower radiator hose and still runs hot … read more
rpmdiag
rpmdiag
High school
7,274 satisfied customers
I have replaced, the water pump, thermostat, and radiator on
i have replaced, the water pump, thermostat, and radiator on my 2002 cavalier, but it is still overheating. what could be the problem? … read more
roy
roy
Associate Degree
3 satisfied customers
Engine overheated and blew radiator. Replaced radiator and
engine overheated and blew radiator. Replaced radiator and put in new thermostat. engine will idle 20 min or so to get up to temp, Starts to overheat (boiling water in upper rad hose while lower hose … read more
Gunvir Singh
Gunvir Singh
1,817 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x