Chevy Colorado Temp Gauge Not Working & Fan Running - Help Needed!

Maintenance and Repairs
1

Issue Overview

I’ve recently been facing a perplexing issue with my Chevy Colorado. The temperature gauge seems completely non-functional, and to make matters worse, the engine fan is running continuously. I’m not sure if this is a sign of a serious problem or just a malfunction somewhere in the cooling system.

What I’ve Noticed

  • Temperature Gauge: The gauge doesn’t move at all, even after driving for a while.
  • Engine Fan: The fan runs constantly, regardless of the vehicle’s temperature.

What I’ve Tried

I’ve already tried a few things:

  • Checked the coolant level, and it’s fine.
  • Looked for any obvious wiring issues, but everything seems intact.
  • I even let the truck cool down and restarted the engine to see if it was a temporary glitch, but no luck.

Seeking Advice

I suspect it could be a faulty sensor or maybe the thermostat, but I’m not exactly sure where to start troubleshooting! Has anyone else experienced this? What did you do to resolve it?

Any Suggestions?

If you’ve run into the same issue or have ideas on what I should check next, I would greatly appreciate your advice. I’m hoping it’s something I can handle myself without needing to go to the shop.

Thank you for any help you can share!

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I’m having a similar issue with my Chevy Colorado! The temp gauge is erratic, and the fan runs constantly. Have you checked the temperature sensor? It could be faulty.

5 Likes
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I second that! A bad sensor can definitely cause those symptoms. It’s worth checking the wiring, too—sometimes connectors can get corroded.

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The dashboard could be another culprit. If the wiring to the gauge is damaged, it might not read anything. Did you notice any flickering lights or other electrical issues?

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I haven’t noticed any flickering, but now I’m curious. What else could cause a malfunctioning gauge?

6

Sometimes it could be a blown fuse that controls the temp gauge. These things are often overlooked, but an easy fix! Check your fuse box.

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Good point! I’ll definitely check that first. Fuse issues can be so sneaky.

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Hey, don’t forget about ground connections! A bad ground can cause strange gauge behavior, including the fan running non-stop.

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Wow, I hadn’t thought of grounding issues. Seems like I have a checklist now!

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When all else fails, could it be the ECM? It might be processing incorrectly. Hopefully, it’s not that serious!

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ECM problems can be a nightmare! Is there a way to diagnose if the ECM is at fault, or just trial and error? Anyone else had this issue?

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I would take it to a mechanic just to get a proper diagnostic. Sometimes you can’t beat professional tools!

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True, mechanics have the right gear for this unless you’re handy yourself!

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Let’s not forget about the possibility of software updates. Sometimes manufacturers release updates that fix issues like these.

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That’s a good angle! I’ll check if there’s been any recall or update regarding my model.

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Ugh, all this troubleshooting makes me think… do mechanics ever just shrug their shoulders and say, ‘Good luck!’? Haha!

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Haha, right? And then we’re left feeling like detectives! But seriously, I really hope you find the root of the issue soon.

2 Likes
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Thanks everyone! I have so many leads now! I’ll keep you updated on my progress, hopefully, I can fix the famous Chevy temp gauge mystery! Reliving those high school auto shop vibes!

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I had the same issue with my Colorado. The fan running continuously could potentially indicate your system is trying to compensate for overheating. If the temp gauge isn’t working, you might not get warnings until it’s too late.

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That’s interesting! How does that relate to fuel efficiency? I’m worried about my gas mileage with the fan working overtime.