engine coolant temperature gauge

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hamilton
Posts: 2
Joined: Wed Oct 26, 2016 7:48 am

engine coolant temperature gauge

Unread post by hamilton » Wed Oct 26, 2016 7:54 am

I have a 2008 GMC Envoy. This morning the engine coolant temp. gauge never moved, it stayed at cold while I was driving. The engine never got hot, the gauge just won't register. What do you think the problem is? Thank you.

 

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carriedi
Posts: 2280
Joined: Wed Apr 10, 2013 12:42 pm
Location: Oregon

Re: engine coolant temperature gauge

Unread post by carriedi » Wed Oct 26, 2016 10:29 am

many times the sending unit is the culprit. It could be a loose connection or a bad sender. I have seen where the stepper motor in the instrument cluster has stopped working also but the sender is the place to start.

Using a scanner and look at the coolant temperature. It should give you the digital temperature if the sender is working. If the computer does see the correct temperature then I would start looking the gauge unit. You should get a check engine code coming up if the computer doesn't see the temperature come up to normal operating temp after a while. (P0128)

hamilton
Posts: 2
Joined: Wed Oct 26, 2016 7:48 am

Re: engine coolant temperature gauge

Unread post by hamilton » Wed Oct 26, 2016 12:05 pm

Thank you.

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