replaced thermastas and tem climbs to 190/200 but if driven it will go to about 210 and then drown back down do you think one of them is bad
10

Asked by Guru51YK9 Jan 19, 2018 at 06:16 PM about the 2005 GMC Sierra 2500HD 4 Dr SLT 4WD Crew Cab SB HD

Question type: Maintenance & Repair

1 Answer
10

Guru51YK9 answered 6 years ago

it was fine before I changed the stats but was running 170. thought I had air lock, but I it should not be doing this. heats fine just cant figure the increase of temp

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