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473v Viper Remote Case Three Button Questions & Answers
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2001 Cadillac Deville Northstar Engine thermostat location
4.6 Northstar V8. It is located on the rear of engine (driver side) in front. It is in the the water pump housing cover. Remove air box and intake tube and bottom radiator hose. 2 bolts(believe 10mm) on thermostat housing. These systems are a little finicky about air pockets....so fill slowly and let run at idle until operating temp and let cool and check level.....fill as needed and repeat if needed.
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