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How do you fix p0495 code on 04 trailblazer - TrailBlazer Chevrolet Cars & Trucks

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Posted on Jan 02, 2017

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SOURCE: i have a 2006 chev.

P0495 "Cooling Fan High Speed' = the fan clutch has failed, time for a replacement. This is unrelated to the water pump problem and it's a well know problem in 2003-2008 Trailblazers. Be sure to only use the new , modified part - number 15293048. Any other part number will only be replacing the bad part with another potential bad part.
P2119 Throttle Actuator Control Throttle Body Range Performance = the throttle box is severely dirty or gummed up or even defective and it will have to be fully cleaned or replaced. This is usually caused by impure gases from the evap system so check it also. Also check for a faulty throttle body actuator or sensor or a faulty pedal sensor.

Posted on Apr 06, 2011

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SOURCE: code p0495 comesup engine seems to rev very high

its your fan clutch
i've replace them before very hard you need to take fron clip of bumper

Posted on May 08, 2010

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04 chevy trailblazer Reduced engine power


You have a problem with the electronic throttle control . You need to have it checked for codes , could be a few different thing's Pt 1 2007 Chevy 2500HD Reduced Engine Power Warning Fault Code P1516... P2138 APPS Accelerator Pedal Position Sensor Fix 3 5L Chevrolet Impala Lot's of codes for this , Drive by Wire Function and diagnostics by Wells


Feb 24, 2016 | Cars & Trucks

1 Answer

P0495


Came Back ?

If you clear codes, you can't fix the vehicle,
that removes all data you need to diagnose it

They won't go away until you look up the codes &
how to diagnose them,then component test to find
a problem.

Need professional scanner to check for codes,there
is enhanced data that a code reader won't have access
to & other data you need to look at on a road test

Mar 25, 2014 | 2003 GMC Envoy

1 Answer

P0495 & p0128


I am thinking you are on the right track. A noisy, wobbly fan has to be replaced and replacing the thermostat could reduce the fan speed as the problems are interrelated.

Nov 15, 2013 | 2005 Chevrolet TrailBlazer

2 Answers

I got the code PO 495 on my 06 chevy trailblazer. What does that means?


Your fan clutch is likely faulty,unfortunately,not uncommon and a bit expensive.
John

Sep 04, 2011 | Chevrolet TrailBlazer Cars & Trucks

1 Answer

2002 TRAILBLAZER SOUNDS LIKE A JET TAKING OFF.TROUBLE CODE PO495. WHAT DO I NEED TO FIX THIS.


This is your fan clutch, that's what P0495 is, your clutch is not working properly. Therefore, it sounds like a jet because the fan clutch is constantly engaged. Very common from 2002-2--2004 TB's. Need to borrow some specialty tools like fan clutch wrenches from say Autozone, some Autozone's charge a fee and refund it when you bring it back. Been there done this with my 03'.

Dec 27, 2010 | 2002 Chevrolet Trailblazer Ext

2 Answers

How hard is it to replace the water pump. 2006 chevy trailbalzer LT Time to do job?


1 hour if have done them before.If not 3 hours should do it.however you need a special tool to take off the fan clutch from the pump.Caution should be used as not to damage the radiator as it is a tight fit.

Dec 02, 2010 | 2006 Chevrolet Trailblazer

2 Answers

Code p0495 comesup engine seems to rev very high


its your fan clutch
i've replace them before very hard you need to take fron clip of bumper

May 08, 2010 | 2002 Chevrolet Trailblazer Ext

1 Answer

My check engine light is on had the OBD checked and stated a temperature problem autozone suggested to check coolant level first then replace the temperature sensor where is it located?


I had the exact same problem on my 2003 Trailblazer. The check engine light came on, I took my vehicle to autozone and they told me the code was P0495 (cooling fan speed high)but they did't know how to fix the problem.
I called the dealer and they told me that it would cost me $89.00 to reprogram my PCM. I took my vehicle to the dealer and now my trailblazer is working like new. I hope it's that simple, the other thing also that could have gone bad would be the relay to your electric fan. The relay is a not like a normal relay but is more like a module that can regulate the speed of the electric fan which a tech2 scanner can determine if it's bad or not. Good luck
Thank you for using fixya.

Apr 22, 2010 | 2004 Chevrolet TrailBlazer

1 Answer

Rearend Leakage 04 Trailblazer


you may want to take it to a shop and have them replace the seal to make sure its done right and without damage.

Feb 01, 2009 | 2004 Chevrolet TrailBlazer

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