2003 Cadillac Seville Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 Cadillac Seville

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2003 Cadillac Seville Problems

Vacuum Brake Release Switch Can Fail

The parking brake may not release automatically due to a failed vacuum switch or actuator. Our technicians tell us that if vacuum is supplied to the actuator when the transmission is in gear, the vacuum switch is functioning and replacing the actuator should correct this concern.

Excessive Engine Oil Consumption

Vehicles equipped with the 4.6L engine may develop excessive oil consumption. Please be advised that under optimum driving conditions, using one quart of oil every 2000 miles is acceptable. This Cadillac standard applies to vehicles with less that 50,000 miles. Our technicians tell us that if you experience excessive oil consumption it may be caused by built up on the piston rings which restricts movement, preventing them from wiping all the oil from the cylinder walls. Oil left behind is then burned during the combustion process. There is a special ring cleaning procedure which can help this situation. The GM service bulletin number is #02-06-01-009C.

Misfire Due to Failed Ignition Coil

An ignition coil may fail causing one of the cylinders to misfire. Each of the two banks of cylinders has its own coil assembly. If one ignition coil fails the coil assembly for the corresponding cylinder bank must be replaced.

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2003 Cadillac Seville Questions

ck ng light Autozone said oxygen sensor & sensor in trans is this exps to fix (1 answer)

my mechanic said the sensor in trans is internal and he does not do this the oxygen sensor also needs to be replaced how expensive is thks type of repair

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2003 Cadillac Seville Recalls

GM Recalls 2002-2003 Vehicles Due to Fuel Tank Pressure Sensor Failure

GM recalls certain 2002-2003 Cadillac Devillle, Seville, Oldsmobile Aurora, and Pontiac Bonneville vehicles because the fuel tank pressure sensor may fail and cause a fuel leak. In the presence of an ignition source, a fuel leak may result in a fire. Dealers will replace the fuel tank pressure sensor.

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2003 Cadillac Seville Reviews

bought my 03 sls used with 100K and no engine leaks at all. Beautiful car with all options. Only Problem is a leaking transaxle seal on the drivers side, that really dumps it out when in reverse. Love this car has more power than you'll ever need. So I'm going to pay the 1,400 to fix the seal. To me it'll be worth it.

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