Mechanics

CHEVY

2002 Chevrolet Impala

Engine Mechanical problem
2002 Chevy Impala 6 cyl Front Wheel Drive Automatic 108000 miles

I have had some recent troubles with my car and would like to get some ideas on what I may be facing. There is a couple of noises I would like to mention also, one is a knocking and the other is a whine that sounds like a vaccuum. My husband looked last night and said there is oil in the antifreeze which I know may be a head gasket problem. There has been a significant loss of power and where I live it is all farm land and very hilly. Just a couple of days ago we were going up a hill on the highway and had the gas pedal floored and were losing momentum. Yesterday I ran to a friend's house and had a hard time getting up the hill towards her house and our driveway is a hill and we back up it to park and almost couldn't make it up my driveway. There was one point I had the pedal floored and I was rolling forward. Now while there are many hills, none of them are very steep or extreme. I do not have a lot of money and I know taking it to a mechanic to find out what is wrong will cost a couple hundred in itself so any ideas I can get would be greatly appreciated. Thanks!
Avatar
Missinmontana23
November 21, 2008.



Hello –

I am sorry you are having the car problems.

If you have oil in the antifreeze, yes, it is a blown head gasket. Was it blowing white smoke out the tail pipe also?

As for the noises…. You are going to hear all types and a loss of power in this condition. All the sensors are going crazy trying to figure out what’s going on, the water of course doesn’t ignite, it’s like he engine is having a heart attack. So until that is fixed the other things may be a result of that.

Did the car get overheated? There isn’t really that many miles on it……….

The best I can do is provide a rough estimate and some things to make sure they do.

If you do need to get back with me though please let me know if your Impala is a regular Impala or an LS model and do you have a3.4L or 3.8L engine and what is the 8th digit of your VIN.

Thanks for the donation

Please let us know if what the final fix was for your car so we can better assist others. Thanks!

Find a car repair manual for your car repair questions.

ImpalaSS
Nov 21, 2008.
I have not noticed any white smoke coming out of the tailpipe but that doesn't mean there hasn't been any nor has it overheated which I know a head gasket can cause that. My car is the regular impala with the 3.4L engine. The eighth digit is " E" on the vin. Thank you for your help!

Tiny
Missinmontana23
Nov 21, 2008.
Hello –

Well yes ma’am about some overheating with a blown gasket but also if the car overheats you can get a blown head gasket.

If you are sure it is a blown head gasket, which if your husband saw the oil, then yes, then are you wanting a rough estimate…. And an idea on what to ask/look for on the repair?

Thanks for the donation

Please let us know if what the final fix was for your car so we can better assist others. Thanks!

Find a car repair manual for your car repair questions.

ImpalaSS
Nov 21, 2008.
I am not completely sure that it is a blown head gasket. I sure hope not! But if you can give me a rough estimate and an idea of what to ask or look for I would sure appreciate it a lot!

Tiny
Missinmontana23
Nov 21, 2008.
Hello –

I was going by what your husband had checked and stated that he had seen oil in the antifreeze. Oil in the antifreeze or antifreeze in the oil is a big sign. White smoke out of the tail pipe. Here are a few more things for a blown head gasket.

Allow engine to cool (engine must cool completely to get accurate oil reading!!). Check oil dipstick again. If the oil has a watery appearance and has risen noticeably up the dipstick, then you probably have a blown head gasket or a warped head

Other typical symptoms of a blown head gasket MAY include: -bubbles of air coming up into your radiator (remove cap before starting) -leaking radiator -milkshake colored oil -overheating -rough running -coolant or oil running from head -spark plug(s) that have a green tint (if green coolant). -white colored or sweet smelling exhaust. I emphasize "may" include one or more of these symptoms.

From what I understand, a radiator shop will place a detector which is a blue liquid inside a "bulb" if the liquid turns yellow you have a leak.

If it is a blown head gasket you will need to have them removed and repaired. This should include having the heads resurfaced; the valves cleaned and checked, new seals, the heads totally reworked.

You will need to flush your radiator system. Lord willing you don’t have to replace your catalytic converter as sometime this damages them also. I am going to attach that for worse case.

Looks like you may have some recalls on your vehicle. The dealer may fix these for free. Please contact the dealer service department, give them the VIN number of your car and have them check on these to see if they apply to you.

Thanks for the donation

Please let us know if what the final fix was for your car so we can better assist others. Thanks!

Find a car repair manual for your car repair questions.


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ImpalaSS
Nov 21, 2008.
The head gasket is a possibility. Also, before you jump the gun, check for leaking intake manifold gaskets. Where did you check for the oil in the coolant? Was it in the radiator or the overflow tank? It might not be oil. It could just be sludge from the dexcool coolant. It will look just like oil in the coolant.

The cooling system is under pressure, so it is difficult for oil to enter the cooling system. If the oil from a pressurized port was going into the cooling system, you would be having low iol pressure problems and the radiator would be overflowing. I would have a shop pressure test the cooling system for leaks. You will probably find the lower intake gaskets are the problem.

Dennyp
Nov 22, 2008.
The low power problem could be the catalytic converter. They do have problems with the converter breaking down internally and restricting the exhaust.

XTooltipElement
Service Information
2002 Chevrolet Impala | Impala, Monte Carlo (VIN W) Service Manual | Engine | View All Bulletins | Document ID: 1222414

#03-06-05-002: Service Engine Soon (SES) Light On, Reduced Vehicle Performance, Acceleration and Top Speed (Replace Catalytic Converter and Brake Vacuum Booster Hose with Thermo Protection) - (Jan 13, 2003)

Subject: Service Engine Soon (SES) Light ON, Reduced Vehicle Performance, Acceleration and Top Speed (Replace Catalytic Converter and Brake Vacuum Booster Hose with Thermo Protection)

Models: 2001-2002 Chevrolet Impala

with 3.8L V6 Engine (VIN K -- RPO L36) and

RPO's 9C6 Taxi Cab, 9C1 Police Car and/or 9C3 SEO Vehicle Police Car, Limited Content

Condition
Some customers may comment on the SES light on and/or reduced vehicle power, acceleration and reduced top speed.

Cause
This condition may be caused by a restriction in the catalytic converter.

Correction
Follow the service procedure below for diagnosis and replacement of the catalytic converter.

For diagnosis of the catalytic converter, refer to Restricted Exhaust, SI Document ID #685978.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle SI Document ID #692668.

Disconnect the heated oxygen sensor (HO2S) electrical connector.
Remove the exhaust manifold pipe stud nuts.
Remove the rear catalytic converter bolts.
Remove the two rear converter hangers.
Remove the 3-way catalytic converter.
Remove the converter gasket and seal and discard.
Remove the heated oxygen sensor (HO2S) from the old converter using J 39194 Oxygen Sensor Wrench or equivalent and properly discard the old converter.
Important: The 3-way catalytic converter is serviced by replacing the entire assembly. Always replace the gasket at the front flange when servicing the 3-way catalytic converter assembly. Never install the original gasket.

Install the heated oxygen sensor (HO2S) into the new converter, P/N 10337610, using J 39194 Oxygen Sensor Wrench or equivalent.
Install a new exhaust manifold to converter pipe gasket, P/N 12565634.
Install a new converter pipe to muffler pipe gasket, P/N 10275205.
Install the converter to the vehicle.
Attach the two rear converter hangers.
Install the catalytic converter rear bolts.
Install the front catalytic converter nuts.
Tighten

• Tighten the exhaust manifold pipe stud nuts to 32 Nm (24 lb ft).

• Tighten the catalytic converter bolts to 45 Nm (33 lb ft).

Connect the heated oxygen sensor (HO2S) electrical connector.
Lower the vehicle.
Important: When replacing catalytic converter, P/N 10337610, you MUST REPLACE the brake vacuum booster hose with thermo protection sleeve, P/N 10336627.

Remove the brake booster vacuum hose and discard.
Install the new vacuum booster hose with thermo protection sleeve, P/N 10336627.
Inspect the exhaust system for leaks.
Parts Information
Part Number
Description
Qty

10337610
Catalytic Converter
1

12565634
Gasket, Front Manifold to Converter
1

10275205
Gasket, Rear Converter to Muffler
1

10336627
Brake Vacuum Booster Hose with Thermo Sleeve
1

Parts are currently available from GMSPO.

Warranty Information
For vehicles repaired under warranty, use: Labor Operation
Description
Labor Time

L2300
Catalytic Converter Replacement
0.4 hr

Add A
Reinstall Exhaust Manifold Flange Studs
0.1 hr

Add B
Brake Vacuum Booster Hose Replacement
0.1 hr

Add C
Diagnosis Time
0.0-0.3 hr

GM bulletins are intended for use by professional technicians, NOT a " do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

© 2008 General Motors Corporation. All rights reserved.

Dennyp
Nov 22, 2008.
XTooltipElement
Service Information
2002 Chevrolet Impala | Impala, Monte Carlo (VIN W) Service Manual | Engine | Campaigns | Special Policy | Document ID: 1703629

#05551: Special Policy Adjustment - Catalytic Converter - (Sep 14, 2005)

Subject: 05551 - SPECIAL POLICY ADJUSTMENT - CATALYTIC CONVERTER

Models: 2001-02 CHEVROLET IMPALA, MONTE CARLO

2001-02 PONTIAC GRAND PRIX

2001-02 BUICK REGAL

EQUIPPED WITH 3.4L (RPO LA1 - VIN E) OR 3.8L (RPO L36 - VIN K) V6 ENGINE

Condition
Some customers of 2001-02 Chevrolet Impala, Monte Carlo; Pontiac Grand Prix; and Buick Regal model vehicles, equipped with a 3.4L (RPO LA1 - VIN E) or 3.8L (RPO L36 - VIN K) V6 engine, may experience a condition where the vehicle exhaust catalytic converter is replaced due to complaints of lack of power or illumination of the Malfunction Indicator Lamp (MIL). This may be due to the front endcone insulation from the catalytic converter breaking away and blocking the front of the first catalyst brick and preventing the free flow of exhaust gas through the converter.

Special Policy Adjustment
This special policy covers the condition described above for a period of 10 years or 120,000 miles (190,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. The repairs will be made at no charge to the customer.

For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after September 15, 2005 are covered by this special policy and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to September 15, 2005 must be submitted to the Service Contract provider.

Vehicles Involved
Involved are all 2001-02 Chevrolet Impala, Monte Carlo; Pontiac Grand Prix; Buick Regal model vehicles, equipped with a 3.4L (RPO LA1 - VIN E) or 3.8L (RPO L36 - VIN K) V6 engine and built within the following VIN breakpoints: Year
Division
Model
From
Through

2001
Chevrolet
Impala
19100001
19378250

2001
Chevrolet
Monte Carlo
19100001
19378233

2001
Pontiac
Grand Prix
1F100004
1F275188

2001
Buick
Regal
11100004
11338085

2002
Chevrolet
Impala
29100001
29374833

2002
Chevrolet
Monte Carlo
29100016
29374832

2002
Pontiac
Grand Prix
2F100019
2F276927

2002
Buick
Regal
21100001
21288762

Parts Information
Parts required to complete this special policy are to be obtained from General Motors Service Parts Operations (GMSPO).

Part Number
Description
Qty/ Vehicle

10343187
Converter, Catalytic (L36 engine)
1

10343185
Converter, Catalytic (LA1 engine)
1

10328740
Gasket, Catalytic Converter (Converter to I-Pipe, both)
1

15286606
Gasket, Exh Manif Pipe (L36)
1

24505057
Gasket, Exh Manif Pip (LA1)
1

Customer Notification
General Motors will notify customers of this special policy on their vehicles (see copy of typical customer letter included with this bulletin - actual divisional letter may vary slightly).

Service Procedure
Catalytic Converter Inspection
Begin the inspection by reviewing the condition described by the customer. Refer to " Description and Operation, " SI document 657895, to help you determine the correct symptom diagnostic procedure when a malfunction exists. It will also help you determine if the condition described by the customer is normal operation. Refer to " Symptoms [horbar] Engine Exhaust, " SI document number 657893, in order to identify the correct procedure for diagnosing the system. If a new catalytic converter is required, refer to the service procedure in this bulletin. If a catalytic converter is not required, submit a claim for inspecting the catalytic converter only. Refer to the Claim Information section of this bulletin.

Catalytic Converter Replacement for W-Series Vehicles Equipped With 3.4L (LA1) and 3.8L (L36) Engines

Tools Required
J 39194 Oxygen Sensor Wrench

Important: The 3-way catalytic converter is serviced by replacing the entire assembly. Always replace the gaskets at the front and rear flanges when servicing the 3-way catalytic converter assembly. Never reinstall the original gasket.

Raise and support the vehicle. Refer to " Lifting and Jacking the Vehicle" in the appropriate model year and vehicle model line service manual or SI document.
Disconnect the heated oxygen sensor wiring harness connector.
2.1. Remove the heated oxygen sensor electrical connector retaining tab from the electrical harness connector.

2.2. Disconnect the heated oxygen sensor connector from the electrical harness connector.

Remove the exhaust manifold pipe nuts and studs.
Remove the catalytic converter bolts.

Remove the catalytic converter hangers.
Remove the 3-way catalytic converter.
Notice: The Heated Oxygen Sensor (HO2S) and the Oxygen Sensor use a permanently attached pigtail and connector. Do not remove this pigtail from the Heated Oxygen Sensor. Damage or the removal of the pigtail or the connector could affect the proper operation of the sensor. Take care when handling the HO2S and the O2S. Keep the in-line electrical connector and the louvered end free of grease, dirt, or other contaminants. Also avoid using cleaning solvents of any type. Do not drop the HO2S or the O2S. Do not roughly handle the HO2S or the O2S.

Remove the heated oxygen sensor from the catalytic converter assembly using J39194 tool.
Install the heated oxygen sensor to the new catalytic converter assembly using J39194 tool.
Tighten
Use the J 39194 tool to tighten the oxygen sensor to 41 N ·m (30 lb ft).

Remove the catalytic converter gasket from the catalytic converter mating surfaces.

Install a new exhaust manifold pipe gasket.
• If the vehicle is equipped with a 3.4L (LA1) engine, install the metal ring gasket (P/N 24505057) into the catalytic converter assembly flange.

• If vehicle is equipped with a 3.8L (L36) engine, remove the exhaust manifold pipe gasket at the exhaust manifold pipe flange.

Install the exhaust manifold pipe studs.
• If the vehicle is equipped with a 3.8L (L36) engine, install a new exhaust manifold pipe gasket (P/N 15286606) to the exhaust manifold pipe studs.

• If the vehicle is equipped with a 3.4L (LA1) engine, proceed to step 12.

Install the 3-way catalytic converter (P/N 10343185) for 3.4L (LA1) and (P/N 10343187) for 3.8L (L36).
Install the exhaust manifold pipe stud nuts.
Tighten
Tighten the exhaust manifold pipe stud nuts to 35 N ·m (26 lb-ft) for the 3.8L (L36) engine and 56 N ·m (41 lb-ft) for the 3.4L (LA1) engine.

Notice: To prevent internal damage to the flexible coupling of the catalytic converter assembly, the converter must be supported. The vertical movement at the rear of the catalytic converter assembly must not exceed 6 degrees up or down.

Install a new catalytic converter gasket, P/N 10328740.
Install the catalytic converter bolts.
Tighten
Tighten catalytic converter bolts to 60 N ·m(44 lb ft).

Connect the heated oxygen sensor to the electrical connector and install the retaining tab to the electrical tab.
Install the catalytic converter hangers.
Lower the vehicle.
Inspect the exhaust system for leaks.
Claim Information
For vehicles repaired under the terms of this special policy, submit a claim with the information indicated below: Repair Performed
Part Count
Part No.
Parts Allow
CC-FC
Labor Op
Labor Hours
Net Item

Inspect Catalytic converter only
N/A
N/A
N/A
MK-95
T5629
0.3
N/A

Inspect and Replace Catalytic Converter.
--
--
*
MK-95
T5630
0.8
N/A

Customer Reimbursement (Canadian & Export Dealers / US CAC)
N/A
N/A
N/A
MK-95
T5631
0.2
**

* The " Parts Allowance" should be the sum total of the current GMSPO Dealer net price plus applicable Mark-Up or Landed Cost Mark-Up (for Export) for catalytic converter parts needed to complete the repair.

** The amount identified in the " Net Item" column should represent the customer reimbursement amount.

Customer Reimbursement - For US
All customer requests for reimbursement for previous repairs for the special policy condition will be handled by the Customer Assistance Center, not by dealers.

A General Motors Special Policy Customer Reimbursement Procedure Form is included with the customer letter.

Important: Refer to the GM Service Policies and Procedures Manual, section 6.1.12, for specific procedures regarding customer reimbursement and the form.

Customer Reimbursement - For Canada and Export
Customer requests for reimbursement of previously paid repairs to correct the catalytic converter are to be submitted prior to or by September 30, 2006. Repairs must have occurred within the 10 years of the date the vehicle was originally placed in service, or 120,000 miles (190,000 km), whichever occurs first.

When a customer requests reimbursement, they must provide the following: • Proof of ownership at time of repair.

• Original paid receipt confirming the amount of unreimbursed repair expense(s) (including Service Contract deductibles), a description of the repair, and the person or entity performing the repair.

If the work was done by someone other than a GM dealership, the amount of reimbursement will be limited to the amount that the repair would have cost GM to have it completed by a GM dealership.

GENERAL MOTORS PRODUCT PROGRAM CUSTOMER REIMBURSEMENT PROCEDURE
If you have paid to have this special policy condition corrected prior to this notification, you may be eligible to receive reimbursement.

Requests for reimbursement may include parts, labor, fees and taxes. Reimbursement may be limited to the amount the repair would have cost if completed by an authorized General Motors dealer.

Your claim will be acted upon within 60 days of receipt.

If your claim is: • Approved, you will receive a check from General Motors.

• Denied, you will receive a letter from General Motors with the reason(s) for the denial, or

• Incomplete, you will receive a letter from General Motors identifying the documentation that is needed to complete the claim and offered the opportunity to resubmit the claim when the missing documentation is available.

Please follow the instructions on the Claim Form provided on the reverse side to file a claim for reimbursement. If you have questions about this reimbursement procedure, please call the toll-free telephone number provided at the bottom of the form. If you need assistance with any other concern, please contact the Customer Assistance Center between the hours of 8: 00 AM and 11: 00 PM, EST, Monday through Friday. They can be reached at the number listed on your customer letter.

GENERAL MOTORS PRODUCT PROGRAM CUSTOMER REIMBURSEMENT CLAIM FORM
THIS SECTION TO BE COMPLETED BY CLAIMANT

Date Claim Submitted: Vehicle Identification Number (VIN): Mileage at Time of Repair: Date of Repair: Claimant Name (please print): Street Address or PO Box Number: City, State, ZIP Code: Daytime Telephone Number (include Area Code): Evening Telephone Number (include Area Code): Amount of Reimbursement Requested: $

THE FOLLOWING DOCUMENTATION MUST ACCOMPANY THIS CLAIM FORM

Original or clear copy of all receipts, invoices and/or repair orders that show: • The name and address of the person who paid for the repair.

• The Vehicle Identification Number (VIN) of the vehicle that was repaired.

• What problem occurred, what repair was done, when it was done and who did it.

• The total cost of the repair expense that is being claimed.

• Payment for the repair in question and the date of payment.

(copy of front and back of cancelled check, or copy or credit card receipt.)

My signature to this document attests that all attached documents are genuine and I request reimbursement for the expense I incurred for the repair covered by this special policy.

Claimant's Signature: Please mail this claim form and the required documents to: General Motors Corporation

P.O. Box 33170

Detroit, MI 48232-5170

All recall reimbursement questions should be directed to the following number: 1-800-204-0261.

September 2005
Dear General Motors Customer: As the owner of a 2001-02 Chevrolet Impala, Monte Carlo; Pontiac Grand Prix; or Buick Regal model vehicle, equipped with a 3.4L or 3.8L V6 engine, your satisfaction with our product is very important to us.

This letter is intended to make you aware that some 2001-02 Chevrolet Impala, Monte Carlo; Pontiac Grand Prix; and Buick Regal model vehicles, equipped with a 3.4L or 3.8L V6 engine, may have a condition where the catalytic converter is replaced due to complaints of lack of power or illumination of the Malfunction Indicator Lamp (MIL). This may be due to the front endcone insulation from the catalytic converter breaking away and blocking the front of the first catalyst brick and preventing the free flow of exhaust gas through the converter.

This is not a recall. Do not take your vehicle to your GM dealer as a result of this letter unless you believe that your vehicle has the condition as described above.

What We Have Done
General Motors is providing owners with additional protection for the Catalytic Converter. If this condition occurs on your 2001-02 Chevrolet Impala, Monte Carlo; Pontiac Grand Prix; or Buick Regal model vehicle, equipped with a 3.4L or 3.8L V6 engine, within 10 years of the date your vehicle was originally placed in service or 120,000 miles (190,000 km), whichever occurs first, the condition will be repaired for you at no charge.

What You Should Do
Repairs and adjustments qualifying under this special coverage must be performed by a General Motors dealer. You may want to call the service department at your dealer to find out how long they will need to have your vehicle so that you may schedule the appointment at a time that is convenient for you. This will also allow your dealer to order parts if they are not already in stock. Keep this letter with your other important glove box literature for future reference.

Reimbursement
The enclosed form explains what reimbursement is available and how to request reimbursement if you have paid for repairs for the special policy condition.

If you have any questions or need any assistance, just contact your dealer or the appropriate Customer Assistance Center at the number listed below. The Customer Assistance Center’s hours of operation are from 8: 00 AM to 11: 00 PM, EST, Monday through Friday.

Division
Number
Text Telephones (TTY)

Buick
1-866-608-8080
1-800-832-8425

Chevrolet
1-800-630-2438
1-800-833-2438

Pontiac
1-800-620-7668
1-800-833-7668

Guam
1-671-648-8650

Puerto Rico - English
1-800-496-9992

Puerto Rico - Español
1-800-496-9993

Virgin Islands
1-800-496-9994

We are sorry for any inconvenience you may experience; however we have taken this action in the interest of your continued satisfaction with our products.

General Motors Corporation

Enclosure

05551

GM bulletins are intended for use by professional technicians, NOT a " do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

© 2008 General Motors Corporation. All rights reserved.

Dennyp
Nov 22, 2008.