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Cadillac · Known Issues

2002 Cadillac Seville Problems: 4 Known Issues

2002 model year · 170+ owner reports · Updated September 2026

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Issue summary

According to Au7o's analysis of 170+ owner reports, the 2002 Cadillac Seville has 4 documented known issues, with 2 rated critical. The most serious are Fuel Tank Pressure Sensor Failure - NHTSA Recall 03V238000 and Northstar 4.6L Head Gasket Failure ($2,500-$4,000 repair). The most commonly reported issue is Magnetic Ride Control Shock Absorber Failure with 170 owner reports. Across all issues with published estimates, repair costs range from $400 to $4,000. DIY maintenance guides at au7o.io.

In This Article

  • Seville Fuel System1
  • Seville Engine1
  • Seville Suspension2
  • Recalls5
  • FAQ
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In This Article

  • Fuel System1
  • Engine1
  • Suspension2
  • Recalls5
  • FAQ

All 4 Known Issues

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ALL YEARS200420032002200120001999199819971996199519941993

On the 2002-2003 Cadillac Seville, if you own a 2002 or 2003 Cadillac Seville with the 4.6L V8, it falls under NHTSA recall 03V238000. The defect is a single part: the fuel tank pressure sensor, which GM found to be unusually prone to malfunctioning on these cars. The danger is in what happens after it fails. The Seville runs a self-diagnostic test on its evaporative emissions system, and with a bad pressure sensor that test can apply far more vacuum to the fuel system than it should. The excess vacuum damages fuel system components, and the resulting damage lets fuel leak out of the vehicle when it is refueled - a fire risk if that fuel reaches an ignition source. GM filed the campaign for 102,212 vehicles in total, spanning several models; that number is for the entire campaign, not for the Seville alone.

Common Symptoms

  • Gasoline leaking from the car during or right after fill-up
  • Fuel odor around the vehicle

How to Fix

Dealers replace the fuel tank pressure sensor at no charge to the owner. Notification letters went out starting October 17, 2003, but many Sevilles have had several owners since, so the work may still be outstanding. Run your VIN through nhtsa.gov/recalls to confirm whether 03V238000 is open on your car; Cadillac's recall line for this campaign is 1-866-982-2339. There is no expiration on a safety recall remedy.

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Community Reported
High ConfidenceVerifiedReviewed Aug 2026

On the 1993-2004 Cadillac Seville Northstar 4.6L, the Northstar V8 in the Seville shares the same head gasket failure as all Northstar-equipped vehicles. The aluminum block head bolt threads strip, reducing clamping force on the head gaskets. This allows combustion gases to enter the cooling system and coolant to enter the cylinders. The issue is virtually guaranteed on high-mileage Northstars.

This issue also affects: Buick LeSabre, Buick Park Avenue, Buick Cascada

Common Symptoms

  • Overheating
  • Coolant loss
  • White exhaust smoke
  • Bubbles in coolant tank
  • Rough running engine

How to Fix

The industry-standard repair uses Time-Sert inserts to repair the head bolt threads in the aluminum block with stronger steel threads. This can be performed with the engine in the vehicle. Use updated MLS head gaskets and proper torque specifications. Budget $2,500-$4,000 for this repair at a shop experienced with Northstars.

Typical repair cost:$2,500 - $4,000

Research This Issue

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Community Reported
Medium Confidence
Community reported
170 owners

On the 1998-2004 Cadillac Seville, the Seville STS with Magnetic Ride Control (MRC) uses magnetorheological fluid-filled shocks that are expensive to replace and prone to fluid leaks. When a shock fails, the system defaults to a harsh ride and displays a service message.

Common Symptoms

  • Service Ride Control message
  • Harsh ride on one corner
  • Visible fluid leak on shock body
  • Clunking over bumps
  • Uneven ride quality left vs right
  • Body roll increased

How to Fix

Replace the failed MRC shock absorber. OEM replacements are expensive; aftermarket passive shock conversions are available at lower cost but disable the adaptive ride feature. Replace in pairs (both fronts or both rears).

Typical repair cost:$400 - $1,500

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Based on 170 owner reports

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Community Reported
High Confidence170 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 2002 Cadillac Seville 4.6L V8 (VIN 9), the 2002 Seville owner manual identifies Continuously Variable Road Sensing Suspension as STS-only and says it displays SERVICE SUSPENSION SYS when the controller detects a problem. The matching 2002 Seville STS RPO F45 OEM service procedure uses an Electronic Suspension Control damper-actuator test, including C0577 as an intermittent-circuit example. The message or DTC does not by itself prove that the electronic strut hardware failed.

Common Symptoms

  • SERVICE SUSPENSION SYS message
  • Intermittent C0577 damper-actuator circuit DTC

How to Fix

Confirm that the 2002 Seville is an STS equipped with CVRSS RPO F45. Have a qualified technician retrieve the suspension DTCs and run the ESC damper-actuator output test. For an intermittent C0577-type fault, the OEM procedure commands the affected solenoid while the suspected wiring and connector are moved to isolate the circuit or component. Confirm the failed circuit or damper before replacing a strut; do not order a strut, install a passive-conversion kit or defeat the warning from this card.

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Manually Verified
High ConfidenceVerifiedReviewed Jul 2026
NHTSA Recalls5 recalls

FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

ON CERTAIN CADILLAC DEVILLE AND SEVILLE PASSENGER VEHICLES, FUNERAL COACHES, AND LIMOUSINES EQUIPPED WITH A V8 (4.6L) ENGINE, OLDSMOBILE AURORA PASSENGER VEHICLES EQUIPPED WITH A V8 (4.0L ) ENGINE, AND PONTIAC BONNEVILLE SSEI PASSENGER VEHICLES EQUIPPED WITH A SUPERCHARGED V6 (3.8L) ENGINE, THE FUEL TANK PRESSURE SENSORS ARE UNUSUALLY SUSCEPTIBLE TO MALFUNCTIONS. IF THE SENSOR MALFUNCTIONS, EXCESSIVE VACUUM CAN BE APPLIED DURING SELF-DIAGNOSTIC TESTING.

Campaign #03V23800001/07/2003

STEERING:GEAR BOX (OTHER THAN RACK AND PINION)

CERTAIN PASSENGER VEHICLES WERE BUILT WITH MISSING OR UNDER-TORQUED STEERING GEAR ATTACHMENT BOLTS. IF A BOLT IS MISSING, THE DRIVER MAY NOTICE UNEVEN STEERING RESPONSE OR UNUSUAL NOISES DURING TURNS.

Campaign #02V06700006/03/2002

EQUIPMENT:OTHER:LABELS

VEHICLE DESCRIPTION: CERTAIN PASSENGER VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 110, "TIRE SELECTION AND RIMS." THESE VEHICLES HAVE AN INCORRECT TIRE PRESSURE LABEL. ON VEHICLES EQUIPPED WITH P235/55R17 TIRES, THE TIRE PRESSURE LABEL INCORRECTLY SPECIFIES P235/60ZR16 TIRES.

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Frequently Asked Questions

What are the most common Cadillac Seville problems?

According to Au7o's analysis of 170+ owner reports, the 2002 Cadillac Seville has 4 documented issues. The most frequently reported are: Fuel Tank Pressure Sensor Failure - NHTSA Recall 03V238000, Northstar 4.6L Head Gasket Failure, Magnetic Ride Control Shock Absorber Failure. Of these, 2 are rated critical and should be addressed promptly.

Is the Cadillac Seville reliable?

The 2002 Cadillac Seville has 4 known issues documented across 170+ owner reports. 2 issues are rated critical: Fuel Tank Pressure Sensor Failure - NHTSA Recall 03V238000 and Northstar 4.6L Head Gasket Failure. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Cadillac Seville problems?

Repair costs for known Cadillac Seville issues range from $400 to $4,000, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2002-2003 Cadillac Seville Fuel Tank Pressure Sensor Failure - NHTSA Recall 03V238000?

If you own a 2002 or 2003 Cadillac Seville with the 4.6L V8, it falls under NHTSA recall 03V238000. The defect is a single part: the fuel tank pressure sensor, which GM found to be unusually prone to malfunctioning on these cars. The danger is in what happens after it fails. The… Severity: high.

What is the 1993-2004 Cadillac Seville Northstar 4.6L Head Gasket Failure?

The Northstar V8 in the Seville shares the same head gasket failure as all Northstar-equipped vehicles. The aluminum block head bolt threads strip, reducing clamping force on the head gaskets. This allows combustion gases to enter the cooling system and coolant to enter the cylin… Repairs typically run $2,500-$4,000. Severity: high.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data sourced from 170+ owner reports, NHTSA recalls, TSBs, and automotive forums.

Campaign #00V43200019/12/2000

STEERING:LINKAGES:TIE ROD ASSEMBLY

VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE INNER TIE ROD NUTS ARE LOOSE AND CAN RESULT IN SEPARATION OF A TIE ROD.

Campaign #99V30100029/10/1999

SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS

VEHICLE DESCRIPTION: PASSENGER VEHICLES. SOME OF THESE VEHICLES HAVE INTERNAL FLUID LEAKS IN THE BRAKE HYDRAULIC CONTROL UNIT.

Campaign #00V11400017/04/2000

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

What is the 1998-2004 Cadillac Seville Magnetic Ride Control Shock Absorber Failure?

The Seville STS with Magnetic Ride Control (MRC) uses magnetorheological fluid-filled shocks that are expensive to replace and prone to fluid leaks. When a shock fails, the system defaults to a harsh ride and displays a service message. Repairs typically run $400-$1,500. Severity: medium.

What is the 2002 Cadillac Seville CVRSS Damper-Actuator DTC Requires Diagnosis Before Strut Replacement?

The 2002 Seville owner manual identifies Continuously Variable Road Sensing Suspension as STS-only and says it displays SERVICE SUSPENSION SYS when the controller detects a problem. The matching 2002 Seville STS RPO F45 OEM service procedure uses an Electronic Suspension Control… Severity: low.