The Cadillac Northstar rarely exhibits typical blown head gasket symptoms.
The Northstar engine features a die-cast aluminum block and aluminum heads. Designed to produce more power than competing engines put the Northstar at risk for head gasket failure. The problem is peculiar to 1993 to 2010 models. Head gasket problems have plagued the Northstar.
Overheating problems can usually be traced to a component failure and repaired. Sometimes a mechanic checks the cooling system and finds nothing wrong. So, without any clear indication as to what’s causing the problem a mechanic may suggest replacing various cooling system components, like a radiator, water pump or thermostat. Eventually the coolant starts disappearing and it starts to overheat again.
Most Northstar engines can idle all day and not loose a drop of coolant or overheat. However, as soon as you get on the freeway the temperature starts to go up and the low coolant light appears again.
If this sounds familiar, it is time to get a proper diagnosis. An experienced Thermalweld technician can provide the fastest and most cost effective solution to your problem. Let us help you properly diagnose your Cadillac’s overheating problem and ultimately determine if you do or do not have a blown head gasket.
Check out the short video of Cadillacs’ with Northstar engines being repaired.
Cars that came with the Cadillac Northstar Engine
1993 Cadillac Allanté
1993-1994 Cadillac Eldorado ETC
1995-2002 Cadillac Eldorado ETC
1993 Cadillac Seville STS
1994-2004 Cadillac Seville STS
1996-2004 Cadillac DeVille Concours/DTS
2005 Cadillac DeVille DTS
2006-present Cadillac DTS Performance
2008-present Buick Lucerne Super
1994 Cadillac Eldorado
1995-2001 Cadillac Eldorado
2002 Cadillac Eldorado
1994 Cadillac Seville SLS
1995-2001 Cadillac Seville SLS
2002-2004 Cadillac Seville SLS
1994 Cadillac DeVille Concours
1995 Cadillac DeVille Concours
1996-2001 Cadillac DeVille
2002-2005 Cadillac DeVille
2006-present Cadillac DTS
2004-2005 Pontiac Bonneville GXP
2006-2007 Buick Lucerne CXS
2004-2009 Cadillac SRX
2004-2009 Cadillac XLR
2005-2010 Cadillac STS
2006-2009 Cadillac STS-V
2006-2009 Cadillac XLR-V
1995-2003 Oldsmobile Aurora
1999-2005 Shelby Series 1
1999-2002 Oldsmobile Intrigue
2001-2002 Oldsmobile Aurora
Northstar-Cooling System Modification Kit is included in the repair.