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2004 CTS

The Kid

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Hello everyone, I'm new to this forum and have a question on my catalytic converter warranty. Does Cadillac have an extended warranty of 7 yrs. or 100,000 miles for this equipment? Also does anyone know if this problem is a

common problem with this motor? It's 3.6 l. vvt motor. Thanks in advance.

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Check this document at EPA.gov for more info: http://www.epa.gov/oms/consumer/warr95fs.txt

United States Air and Radiation EPA420-F-96-020

Environmental Protection March 1996


Office of Mobile Sources


EPA Environmental Fact Sheet




Federally required emission control warranties protect you, the

vehicle owner, from the cost of repairs for certain emission related

failures that result from manufacturer defects in materials and

workmanship or that cause your vehicle to exceed federal emission

standards. Manufacturers have been required by federal law to provide

emission control coverage for vehicles since 1972. There are two

federal emission control warranties discussed in this fact sheet: (A)

"Performance Warranty" and (B) "Design and Defect Warranty". This

fact sheet explains each warranty in detail, provides you with a list

of some of the parts covered under these warranties, explains the

procedures for making an emissions warranty claim, and answers some of

the most commonly asked questions about emissions warranties.

Finally, we will give you some tips on how to prevent future

emission-related failures and maintain the longevity of your vehicle's



The Performance Warranty covers repairs which are required during

the first 2 years or 24,000 miles of vehicle use because the vehicle

failed an emission test. Specified major emission control components

are covered for the first 8 years or 80,000 miles. If you are a

resident of an area with an Inspection and Maintenance (I/M) program

that meets federal guidelines, you are eligible for this warranty

protection provided that:

* Your car or light-duty truck fails an approved emissions test;


* Your vehicle is less than 2 years old and has less than 24,000

miles (up to 8 years/80,000 miles for certain components); and

* Your state or local government requires that you repair the

vehicle; and

* The test failure does not result from misuse of the vehicle or a

failure to follow the manufacturers' written maintenance

instructions; and

* You present the vehicle to a warranty-authorized manufacturer

representative, along with evidence of the emission test failure,

during the warranty period.

During the first 2 years/24,000 miles, the Performance Warranty

covers any repair or adjustment which is necessary to make your

vehicle pass an approved, locally-required emission test and as long

as your vehicle has not exceeded the warranty time or mileage

limitations and has been properly maintained according to the

manufacturer's specifications.


The Design and Defect Warranty covers repair of emission related

parts which become defective during the warranty period. The Design

and Defect warranty for model year 1995 and newer light-duty cars and

trucks is outlined below:

Design and Defect Warranty Coverage for 1995 and newer light-duty


* Emission control and emission related parts are covered for the

first 2 years or 24,000 miles of vehicle use; and

* Specified major emission control components are covered for the

first 8 years or 80,000 miles of vehicle use.

According to federal law, an emission control or emission related

part, or a specified major emission control component, that fails

because of a defect in materials or workmanship, must be repaired or

replaced by the vehicle manufacturer free of charge as long as the

vehicle has not exceeded the warranty time or mileage limitations for

the failed part.

Design and Defect Warranty coverage may vary depending on the

type of vehicle you have (e.g., heavy-duty trucks, motorcycles or

recreational vehicles have different time and mileage requirements).

To determine the length of warranty coverage that applies to your

vehicle, look for the emissions warranty information in your owner's

manual or warranty booklet. If you own a California vehicle, you may

be entitled to additional warranty coverage.

The owner's manual or warranty booklet will also provide you with

guidance on the procedures for obtaining warranty coverage. If you

have questions about the emissions warranties on your vehicle or need

help in filing a warranty claim, contact your local car dealer or the

manufacturer's zone or regional representative listed in your owner's

manual or warranty booklet.

What Emission Control and Emission Related Parts Are Covered by The

Design and Defect Warranty?

An emission control part is any part installed with the primary

purpose of controlling emissions. An emission related part is any

part that has an effect on emissions. Listed below are some examples

of parts or systems which fall under these definitions. A more

complete list can be found in your owner's manual/warranty booklet.

If any of the parts listed below fail to function or function

improperly because of a defect in materials or workmanship, causing

your vehicle to exceed federal emission standards, they should be

repaired or replaced under the emissions warranty if your vehicle is

less than 2 years old and has been driven less than 24,000 miles. One

manufacturer may use more parts than another, so the following list is

not complete for all vehicles.


Exhaust Gas Conversion Systems

oxygen sensor thermal reactor

catalytic converter dual-walled exhaust pipe

Exhaust Gas Recirculation System

EGR valve thermal vacuum switch

EGR solenoid EGR spacer plate

EGR backpressure transducer Sensor and switches use to

control EGR flow

Evaporative Emission Control System

purge valve fuel filler cap

purge solenoid vapor storage canister and filter

Positive Crankcase Ventilation (PCV) System

PCV valve PCV solenoid

Air Injection System

Air pump diverter, bypass, or gulp valve

reed valve anti-backfire or deceleration valve

Early Fuel Evaporative (EFE) System

EFE valve thermal vacuum switch

heat riser valve

Fuel Metering System

electronic control module (unit) or EFI air flow meter, computer

command module or mixture control unit, deceleration controls,

electronic choke, fuel injectors, fuel injection units and fuel

altitude compensator sensor, bars or rails for EFI or TBI systems,

mixture settings on sealed fuel mixture control solenoid, diaphragm

or other systems, fuel metering components that achieve closed/other

feedback control sensors/loop operation switches and valves

Air Induction System

thermostatically controlled air cleaner, air box

Ignition Systems

electronic spark advance timing advance/retard systems,

high energy electronic ignition

Miscellaneous Parts

hoses, gaskets, brackets, clamps and other accessories used in the

above systems


These are examples of other parts of your vehicle which have a

primary purpose other than emissions control but which nevertheless

have significant effects on your vehicle's emissions. If any of these

parts fail to function or function improperly, your vehicle's

emissions may exceed federal standards. Therefore, when any of the

parts of the following systems are defective in materials or

workmanship and have failed in a way that would be likely to cause

your vehicle's emissions to exceed federal standards, they should be

repaired or replaced under the emissions warranty:

Fuel Injection System

fuel distributor

Air Induction System

turbocharger intake manifold

Exhaust System

exhaust manifold

Ignition System

distributor spark plugs

ignition wires and coil

Miscellaneous Parts

hoses, gaskets, brackets, clamps, and other accessories used in

the above systems.

What Are Specified Major Emission Control Components?

There are three specified major emission control components,

covered for the first 8 years or 80,000 miles of vehicle use on 1995

and newer vehicles:

* Catalytic converters.

* The electronic emissions control unit or computer (ECU).

* The onboard emissions diagnostic device or computer (OBD).

Catalytic converters are critical emission control components

that have been installed on most cars and trucks manufactured since

1975. Since engines don't burn fuel completely during the combustion

process, the exhaust contains a significant amount of harmful

pollutants such as carbon monoxide, hydrocarbons, and oxides of

nitrogen. The catalytic converter aids the conversion of these

pollutants to less harmful substances such as carbon dioxide, water

vapor, nitrogen, and oxygen before the exhaust is expelled into the


The electronic emissions control unit or computer monitors

certain powertrain functions and controls various operating parameters

to help the vehicle run efficiently and with the lowest possible

emissions. Ignition, transmission function, air injection, exhaust

gas recirculation (EGR), engine operating temperature and fuel system

parameters are some of the systems monitored and/or controlled by the

electronic emissions control unit.

The onboard emissions diagnostic device monitors the operation of

a vehicle's emission control system and alerts the driver with a

dashboard light when malfunctions occur. The system will record where

the problem is occurring and assist automotive technicians in

diagnosing and repairing emission control malfunctions. Since some

emission control malfunctions do not have an adverse effect on vehicle

performance, they can go undetected by the driver for quite some time.

The onboard diagnostic device will help catch malfunctions early,

preventing a significant output of harmful exhaust emissions from your

vehicle, and possibly in time to be covered by the emissions control

warranty. Often this "device" is part of the electronic control unit

mentioned above.

In the future, there may be other parts or components that

qualify for this coverage. Check your owner's manual or warranty book

for possible additional coverage.

How Long Do the Emissions Warranties Apply to Individual Parts of My


For 1995 and newer model year vehicles, emission control and

emission related parts are warranted for the first 2 years or 24,000

miles of vehicle use. Specified major emission-control components are

warranted for the first 8 years or 80,000 miles of vehicle use.

Parts with a stated replacement interval, such as, "replace at

15,000 miles or 12 months," are warranted up to the first replacement

point only.

How Do I Know Whether I Am Entitled to Coverage Under the Emissions


If you or a qualified automotive technician can show that an

emission control or emission related component, or a specified major,

emission-control component, is defective, the repair or replacement of

the part is probably covered under the Design and Defect warranty. If

your vehicle failed a federally approved emissions test and has not

exceeded the time and mileage limitations for the Performance

warranty, any repairs or adjustments necessary for your vehicle to

pass should be covered by the manufacturer if the failure was not

caused by improper maintenance or abuse. When you believe you have

identified a defective part, or your vehicle fails an emission test,

you should follow the procedures for making a warranty claim as

identified by the manufacturer in your owner's manual or warranty

booklet. When taking your vehicle in to have repairs performed under

the Performance Warranty, be sure to have with you a copy of the I/M

test report as proof of your emissions test failure.

May I Have My Regular Repair Facility Perform Warranty Repairs?

If you plan to have the manufacturer pay for a repair under

either of the emissions warranties, you must take the vehicle to a

facility authorized by the vehicle manufacturer for repair to give

them the opportunity to diagnose and repair it. Note that if your

regular repair facility is not authorized by the vehicle manufacturer,

they are not obligated to advise you of parts that are covered under

warranty. Before giving your automotive technician the "go ahead" to

perform repairs, check your owner's manual/warranty booklet for

possible warranty coverage.

Do the Emissions Warranties Apply to Used Vehicles?

Yes. It does not matter if you bought your vehicle new or used

from a dealer or anyone else. As long as the vehicle has not exceeded

the warranty time or mileage limitations, these warranties apply.

IMPORTANT NOTE: Before buying a used vehicle, be sure that all of

the emission control components as originally installed by the

manufacturer are present and functioning properly. If emission

control components are missing or have been tampered with, or the

configuration of the exhaust system has been changed, the emissions

warranties on this vehicle may be void. In addition, if you live in

an area with an I/M program, the vehicle will probably not pass

inspection and you will incur the expense of parts or repairs

necessary for the vehicle to pass.

Can Any Portion of An Emissions Warranty Repair Be Charged to Me?

If you have valid warranty claim, you cannot be charged for any

costs associated with the diagnosis or repair of the problem,

including labor charges, parts, or miscellaneous items that are

necessary to complete the repair. For example, if a manufacturer

agrees to replace a catalytic converter under the emissions warranty,

you should not be charged for the diagnosis of the bad converter, or

any pipes, brackets, adjustments, or labor needed to complete the


What Reasons Can the Manufacturer Use to Deny a Warranty Claim?

If your vehicle is within the age and mileage limits for the

applicable emissions warranty, the manufacturer can only deny coverage

if evidence shows that you have failed to properly maintain and use

your vehicle, causing the part or emission test failure. Some

examples of misuse and malmaintenance include the following:

* vehicle abuse such as off-road driving or overloading; or

* tampering with emission control parts or systems, including

removal or intentional damage of such parts or systems; or

* improper maintenance, including failure to follow maintenance

schedules and instructions specified by manufacturer, or use of

replacement parts which are not equivalent to the originally

installed parts.

What Should I Do If My First Attempt to Obtain Warranty Coverage Is


If your first attempt to receive emissions warranty coverage is

denied, you should do the following:

1) Ask for a detailed explanation, in writing as to why emissions

warranty coverage was denied; and

2) Ask for the name(s) of the person(s) involved in the decision

to deny coverage, including anyone from the manufacturer's

regional or zone office; and

3) Ask for the name(s) of the person(s) with the manufacturer you

should contact to appeal the denial of coverage under the

emissions warranty.

4) Contact and, if necessary, write to the person mentioned above

requesting coverage and giving the basis for your request. Repeat

and continue the appeal process until you are satisfied or have

exhausted all means of appeal.

What If the Dealer Claims That My Vehicle Can Pass the I/M Test

Without Repair?

The law does not require that you fail every I/M test in order to

trigger the warranty. If a valid test shows that you have an emission

problem or there is a defective part, you should get it fixed, while

your vehicle is still within the warranty period. Otherwise, you

might fail a future test because of the same problem and have to pay

for the repair yourself. If you doubt your original test results or

the dealer's results or diagnosis, you can always get another opinion

from another dealer or your I/M program.

How Can Maintenance Affect My Emission Warranty Coverage?

Performance and the cost of scheduled maintenance are your

responsibility. You may either perform scheduled maintenance yourself

or have a qualified repair facility perform it for you.

If a part fails as a direct result of your vehicle not being

properly maintained or being used in a manner inconsistent with the

manufacturer's recommendations, or a part fails as a result of the

vehicle being involved in an accident, the manufacturer may not be

required to repair or replace the failed part under warranty. For

example, failure to replace the spark plugs at the intervals specified

in the maintenance schedule can lead to misfiring and eventual damage

to your catalytic converter - a very expensive part to replace. If

the maintenance is not performed properly as recommended, the

manufacturer may deny warranty coverage.

To ensure maximum air pollution reduction from the emission

control system, as well as to ensure continued warranty coverage,

better gas mileage and performance, and longer vehicle life, you

should have all maintenance performed as recommended by the

manufacturer's schedule. A list of scheduled maintenance for your

vehicle can be found in the owner's manual or warranty booklet.

Do I Have to Show Any Maintenance Receipts Before I Can Make an

Emissions Warranty Claim?

No. Proof of maintenance is not required in order to obtain

coverage under the emissions warranty if an emission control or

emission related component, or a specified major emission control

component, is found to be defective in materials or workmanship.

However, when it is likely that the lack of proper maintenance has

caused the particular part to fail, you may be asked to show that

scheduled maintenance was performed.

If you perform scheduled maintenance yourself, you should keep a

detailed log of work performed and any receipts for parts purchased to

perform the maintenance. In some instances, you may be asked to

qualify your ability to perform such maintenance. Vehicles should

always be maintained according to manufacturers' specifications.

Are Dealers the Only Persons Allowed to Perform Scheduled Maintenance

Recommended by the Manufacturer?

No. Scheduled maintenance may be performed by anyone who has the

knowledge and ability to perform the maintenance and repair. You may

even maintain the vehicle yourself, as long as the maintenance is

performed according to the manufacturer's instructions provided with

the vehicle.

For your protection, before taking your vehicle to a repair

facility to have any maintenance performed, check your maintenance

booklet and make a list of the scheduled maintenance to be performed

at that time. We suggest that you present this list to your auto

technician as opposed to merely asking for a "tune-up" or a "12,000

miles servicing." Your receipt should list all the maintenance

performed and should be kept for your records.

If you maintain the vehicle yourself, you should keep receipts

for parts and a maintenance log to verify your work.

If I Need Replacement Parts, Must I Use the Vehicle Manufacturer's

Parts Only?

No. A manufacturer cannot require the use of any specific brand

of parts in the maintenance of your vehicle. However, the

manufacturer can require you to use parts that are of equal quality to

the original parts.

If I Buy a Used Vehicle, How Do I Know Whether It Has Been Maintained

According to The Maintenance Schedule?

The best way to learn whether the vehicle has been maintained

according to its schedule is to ask the seller for receipts proving

that all of the scheduled maintenance was performed. Having the

receipts on hand will provide necessary evidence if the question of

maintenance arises when considering repairs under warranty. To

prevent any loss of your vehicle's emission performance, you should

continue to follow the maintenance schedule in the owner's manual or

warranty booklet.

If the seller does not have the owner's manual, warranty booklet

or maintenance schedule, you can obtain them from the manufacturer.

How Will I Know If My Claim Has Been Accepted As Valid?

After you present your vehicle for a Performance Warranty claim,

the manufacturer has 30 days to either repair the vehicle or notify

you in writing that the claim has been denied. If you are making a

Performance Warranty claim and your I/M program imposes a shorter

repair deadline, the manufacturer must meet the deadline. Because of

the significance of these deadlines, you should get written

verification from the dealer showing that they acknowledge the date by

which repairs must be made.

There are no specific requirements for Defect Warranty claims,

however, manufacturer responses should be made within a reasonable

time period.

What Happens If the Manufacturer Does Not Respond to My Performance

Warranty Claim Within the 30-Day Deadline?

You may agree to extend the deadline, or it will be automatically

extended if the delay was beyond the control of the manufacturer.

Otherwise, a missed deadline means the manufacturer forfeits the right

to deny the claim. You may then have the repair performed at a

facility of your choice, at the manufacturer's expense. (This

requirement only applies to Performance Warranty claims.)

What Do I Do If the Manufacturer Will Not Honor What I Believe to Be a

Valid Emissions Warranty Claim?

If you believe the manufacturer has not honored a valid claim and

your vehicle has not exceeded the time and mileage limitations, you

should contact an authorized warranty representative and follow the

procedures outlined in your owner's manual or warranty booklet. If the

authorized dealer denies your warranty claim, contact the

manufacturer's regional or zone office for further assistance. If you

are still not satisfied, follow the appeals procedure outlined in your

manual or warranty booklet.

Of course, you are entitled to pursue any independent legal

actions you consider appropriate to obtain coverage under the

emissions warranties. In addition, the Environmental Protection

Agency (EPA) is authorized to investigate the failure of manufacturers

to comply with the terms of these warranties. If you have followed

the manufacturer's procedures (including those for appeals) for making

a warranty claim as set out in your owner's manual or warranty

booklet, have received a written denial and you are not satisfied with

the manufacturer's determination, you may submit a letter to EPA at

the following address. It should provide details of the situation

including the basis for the claim, a copy of the written denial,

copies of your letters to the manufacturers, and copies of any

receipts for emission control parts and repairs you have paid for:

U.S. Environmental Protection Agency

Vehicle Programs & Compliance Division (6405J)

Attn: Warranty Complaints

401 M Street, SW

Washington, DC 20460

Other sources of assistance may be your local or State consumer

protection agency or office of the Attorney General. You also should

be aware that low-cost or free legal assistance may be available

through a local legal aid office, the State bar association, or a law

school clinic staffed by law students.

In Summary

If an emission control or emission related part, or a specified

major emission control component is defective, or if your vehicle

fails an I/M test, and your vehicle is within the time and mileage

limitations for emissions warranty coverage:

* Present a warranty claim to an authorized warranty representative.

If your warranty claim is denied:

* Ask for the reason for denial, in writing.

* Follow the appeal procedures in your owner's manual.

If you are not satisfied with the manufacturer's decision:

* Contact the EPA, which will investigate the denial of a

valid emissions warranty complaint.

Keep This With Your Vehicle for Future Reference


2023 Cadillac CT4-V Blackwing

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