2004 H2 Engine Temp Gauge goes Nuts - Hummer Forums by Elcova

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2004 H2 Engine Temp Gauge goes Nuts

#13

01-30-2010, 07:57 PM

HMH2SUT

Hummer Veteran

Join Date: Aug 2009

Posts: 68

Re: 2004 H2 Engine Temp Gauge goes Nuts

I have had the same problems recently. all guages are shot, I will be sending it out soon for repair,but would the faulty guages throw codes?

I have the p1258 code now.
any suggestions on the p1258 repair? temp sensor? fan?...
It's 10 degrees outside today first got "engine coolant hot" then "engine overheated" then "reduce power.." any help would be appreciated thanks

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