2000 Caddy Dhs error code

Asked by Jul 01, 2017 at 06:16 PM about the 2000 Cadillac DeVille DHS

Question type: Maintenance & Repair

My dhs is over heating. Code is B0429 -  Temp
Control #3 Rear Circuit Range. Only happens when
temp outside is hot.

1 Answer

70,255

If you have a Northstar engine, have the cooling system tested for combustion gasses before putting any money in it! If it tests positive it's a blown head gasket and not worth fixing. All Northstar engines blow head gaskets sooner or later. HTH. -Jim

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