my temp.guage went from 0 to 100 then drops back down again any suggestions?

Asked by Jul 17, 2015 at 05:28 AM about the 2001 GMC Sonoma SLS Extended Cab Short Bed 2WD

Question type: Maintenance & Repair

I haven't checked any hoses yet I just read the other page about temp. fluctuations, I'll
check my hoses in the morning.

4 Answers

3,415

its the wire from temp switch. its grounding somewhere

where is the temp. switch ?

3,415

see below

3,415

on top, on the water system

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