Question about 2004 Chevrolet Avalanche

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2004 chevy avalanche Z71 1500 My temp gauge started going up after being stuck in traffic, I pulled over waited an hr. then continured on the temp started going up again up to 250 deg I put the AC on and the temp went back to normal 205 deg. I checked the clutch fan and it spins with resistence counterclockwise. I'm stumped

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  • Chevrolet Master
  • 15,575 Answers

Did you have the vehicle control modules checked for DTC'S - diagnostic trouble code's ? Not going to a part's store an having it checked . Need to have a professional type scan tool hooked up , check code's in the BCM - body control module , the instrument cluster can also have DTC'S stored . Auto part stores can not check these code's .Viewing engine sensor data to the PCM to see what the real temp. is . Coolant temp. sensor is an input to the PCM/ECM - engine computer , this info is sent to the instrument cluster over the class 2 serial data network .Do you know what a automotive communication network is ? Plus GM had stepper motor problems in their instrument cluster's from 2003 to 2006 . The stepper motor is what controlls that needle .
How to repair GM Instrument Cluster Speedometer Gauge Stepper

Posted on Nov 12, 2017

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6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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Jerry Cassel

  • 78 Answers

SOURCE: Problem with No Heat on 2005 Chevy Avalanche - Cooling System?

It sounds like a water pump to me. Check the pump for leaks. then tak off the radiator cap. Start it up and watch, to see if the water circulates. (ONLY TAKE THE CAP OFF WHEN ENGINE IS COOL)

Posted on Jan 07, 2009

Anonymous

  • 319 Answers

SOURCE: chevy avalanche won't start

another person wrote this, I was trying to find more info for you.

I'm answering my own post so other's may reference. The problem was my Powertrain Control Moudle (PCM) kept blowing out due to a bad fuel pump.

so if you are inclined to check, your fuel pump can still work and not work correctly. So this needs to be tested under correct measures. More than likely on the truck. But I would locate the PCM and check to see if its blown.

If I find anything else I will forward it to you.

tepfy

Posted on Feb 03, 2009

Anonymous

  • 8 Answers

SOURCE: I have a 2005 chevy Impala temp gauge going crazy

faulty stepper motors in your cluster. and its 03-06 GM vehicles that are affected. and no there isnt a glitch in all chevy cars you smoke too much u paranoid freak. you can fix this yourself for about 40 bucks. heres how i did it. click the link

http://www.naioa.com/v2/modules.php?name=Forums&file=viewtopic&t=28085&highlight=

Posted on Mar 22, 2009

Anonymous

  • 79 Answers

SOURCE: 2005 chevy equinox temp gauge showing hot fan

check the coolant temp sensor

Posted on Mar 22, 2009

Anonymous

  • 1 Answer

SOURCE: 2004 chevy avalanche overheating

change thermostat on 2004 chevy trailblazer

Posted on May 05, 2009

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Tunatic, Personally I would agree to check for a short to ground in the circuit. However, verify the sending unit first, it cost less than $20 and can be replace easily.
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Best regards,

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