Close
Cadillac
Seville STS
29

Engine Overheating Due to Leaking Headgasket on Cadillac Seville STS

Problem Description and Possible Solution

Overheating of the engine may cause the cylinder head to expand, severely straining the head bolts and damaging the threads in the engine block. This commonly results in a blown head gasket. Our technicians tell us the engine block threads must be repaired before the cylinder head is reinstalled.

Problem Data
RepairPal Verified
Average mileage: 109,672 (10,600–189,000)
11 model years affected: 1993, 1994, 1995, 1996, more1997, 1998, 1999, 2000, 2001, 2002, 2003
29 people reported this problem
Comments
Viewing 1 - 9 of 9 comments
the car ran hot sense new gm did nothing and the car used oil also they are scammers they defrauded the public with the sts Seville it junk now hve 108 k on itbad heads it always used antifreeze and now I need engine gm is responcable for this and need a class action law suit
JUST BOUGHT THE CAR TODAY AND TONIGHT ENGINE HOT A/C OFF POPS ON. ENGINE GOT VERY HOT. TAKING IT IN TOMORROW. PAID 5700.FOR THE CAR TODAY :(
car overheat put a new water pump put new radiator change the coil packs new thermostat still overheating
First began as an anti-freeze leak. Brought to a local repair who diagnosed it. Brought it to another local repair shop who confirmed the problem: blown head gasket, firewall side. Spent $500 just to hear what I feared all along. Sold my beloved STS for $500 b/c the cost of the repair was about what the value of the car was. Silly, but I miss it. Loved that car (except when the Bose would turn on and off on its own will!)
although coolant level is correct, changed thermostat, water is flowing through engine, water pump fine, and cooling fans work correctly. ive been told its a leaky head gasket