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Check Engine Light Tips

1. The Check Engine light tells you the computer found a problem with your vehicle's running condition.

2. If the vehicle is drving OK, a Check Engine light is not a reason to pull over. But get the problem fixed soon.

3. In testing areas, you will fail your emissions test if the Check Engine light is on.

4. Fuel economy generally suffers when the Check Engine light is on.

5. An extended warranty covers emissions-related components that can trigger the Check Engine light. More information is at: epa.gov/obd/warranties.htm.

6. When the Check Engine light is on, one or more "trouble code(s)" are stored in the computer.

7. You can read and erase trouble codes using inexpensive code-reader tools from auto-parts stores; the tools are very easy to use.

8. The problems identified by the codes are frequently easy to fix (such as a loose gas cap), but some are complex, requiring professional diagnosis.

9. A trouble code indicates a circuit where the problem was identified, not necessarily the faulty component. Diagnosis is often necessary.

10. The Haynes OBD-II Techbook (Book #10206) is your source for late-model code information. If you have a 1995 or earlier model, get Book #10205. Both books can be found in the Techbook section of this site.

 

 
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Haynes Catalog

 
Automotive Repair Manuals
 
19020
Buick, Oldsmobile & Pontiac Full-size models Haynes Repair Manual for 1985 thru 2005 FWD vehicles covering Buick Electra (’85 thru ’90)/ LeSabre & Park Avenue, Oldsmobile Delta 88 Royale/Ninety-eight & Regency, and Pontiac Bonneville (’85 thru’05) with gasoline engines

Our Price: $24.95

With a Haynes manual, you can do it yourself…from simple maintenance to basic repairs. Haynes writes every book based on a complete teardown of the vehicle. We learn the best ways to do a job and that makes it quicker, easier and cheaper for you. Our books have clear instructions and plenty of photographs that show each step. Whether you’re a beginner or a pro, you can save big with Haynes!
--Step-by-step procedures
--Easy-to-follow photos
--Complete troubleshooting section
--Valuable short cuts
--Color spark plug diagnosis
...



19025
Buick, Oldsmobile & Pontiac Full-size Rear-wheel drive gasoline engine models Haynes Repair Manual for 1970 thru 1990 covering Buick Electra (’70 thru ’84), Buick Estate (’70 thru ’90), Buick Le Sabre (’70 thru ’85), Buick Limited (’74 thru ’79), Oldsmobile Custom Cruiser (’70 thru ’90), Olds Delta 88 (’70 thru ’85), Olds Delta 88 Brougham (’80 thru ’85), Olds Delta 88 Royale (’70 thru ’85), Olds Ninety-eight Luxury (’70 thru ’81), Olds Ninety-eight Regency (’73 thru ’81), Olds Ninety-eight Regency Brougham (’82 thru ’84), Pontiac Bonneville (’70 thru ’81), Pontiac Bonneville Brougham (’70 thru ’81), Pontiac Catalina (’70 thru ’81), Pontiac Grandville (’70 thru ’75), and Pontiac Parisienne (’83 thru ’86)

Our Price: $24.95

With a Haynes manual, you can do it yourself…from simple maintenance to basic repairs. Haynes writes every book based on a complete teardown of the vehicle. We learn the best ways to do a job and that makes it quicker, easier and cheaper for you. Our books have clear instructions and plenty of photographs that show each step. Whether you’re a beginner or a pro, you can save big with Haynes!
--Step-by-step procedures
--Easy-to-follow photos
--Complete troubleshooting section
--Valuable short cuts
--Color spark plug diagnosis
...



24017
Chevrolet Camaro and Pontiac Firebird Haynes Repair Manual for 1993 thru 2002

Our Price: $24.95

With a Haynes manual, you can do it yourself…from simple maintenance to basic repairs. Haynes writes every book based on a complete teardown of the vehicle. We learn the best ways to do a job and that makes it quicker, easier and cheaper for you. Our books have clear instructions and plenty of photographs that show each step. Whether you’re a beginner or a pro, you can save big with Haynes!
Step-by-step procedures
--Easy-to-follow photos
--Complete troubleshooting section
--Valuable short cuts
--Color spark plug diagnosis...



24024
Chevrolet Chevette and Pontiac T1000 Haynes Repair Manual for 1976 thru 1987 with gasoline engines

Our Price: $24.95

With a Haynes manual, you can do it yourself…from simple maintenance to basic repairs. Haynes writes every book based on a complete teardown of the vehicle. We learn the best ways to do a job and that makes it quicker, easier and cheaper for you. Our books have clear instructions and plenty of photographs that show each step. Whether you’re a beginner or a pro, you can save big with Haynes!
Step-by-step procedures
--Easy-to-follow photos
--Complete troubleshooting section
--Valuable short cuts
--Color spark plug diagnosis...



38005
Buick Century, Chevrolet Celebrity, Oldsmobile Ciera/Cutlass Cruiser and Pontiac 6000 Haynes Repair Manual for 1982 thru 1996 covering front wheel 2WD gasoline engine models

Our Price: $24.95

With a Haynes manual, you can do it yourself…from simple maintenance to basic repairs. Haynes writes every book based on a complete teardown of the vehicle. We learn the best ways to do a job and that makes it quicker, easier and cheaper for you. Our books have clear instructions and plenty of photographs that show each step. Whether you’re a beginner or a pro, you can save big with Haynes!
--Step-by-step procedures
--Easy-to-follow photos
--Complete troubleshooting section
--Valuable short cuts
--Color spark plug diagnosis

...



 
Automotive Repair Manuals
 
38010
General Motors Haynes Repair Manual covering FWD models of the Buick Regal (1988 thru 2005), Chevrolet Lumina (1990 thru 1994), Olds Cutlass Supreme (1988 thru 1997), and Pontiac Grand Prix (1988 thru 1999) (excludes supercharged engines)

Our Price: $24.95

With a Haynes manual, you can do it yourself…from simple maintenance to basic repairs. Haynes writes every book based on a complete teardown of the vehicle. We learn the best ways to do a job and that makes it quicker, easier and cheaper for you. Our books have clear instructions and plenty of photographs that show each step. Whether you’re a beginner or a pro, you can save big with Haynes!
--Step-by-step procedures
--Easy-to-follow photos
--Complete troubleshooting section
--Valuable short cuts
--Color spark plug diagnosis
...



38015
General Motors Haynes Repair Manual covering FWD models of the Buick Skyhawk, Cadillac Cimarron, Chevrolet Cavalier, Oldsmobile Firenza, Pontiac J2000 and Sunbird for 1982 thru 1994

Our Price: $24.95

With a Haynes manual, you can do it yourself…from simple maintenance to basic repairs. Haynes writes every book based on a complete teardown of the vehicle. We learn the best ways to do a job and that makes it quicker, easier and cheaper for you. Our books have clear instructions and plenty of photographs that show each step. Whether you’re a beginner or a pro, you can save big with Haynes!
--Step-by-step procedures
--Easy-to-follow photos
--Complete troubleshooting section
--Valuable short cuts
--Color spark plug diagnosis
...



38016
Chevrolet Cavalier & Pontiac Sunfire Haynes Repair Manual for 1995 thru 2004

Our Price: $24.95

With a Haynes manual, you can do it yourself…from simple maintenance to basic repairs. Haynes writes every book based on a complete teardown of the vehicle. We learn the best ways to do a job and that makes it quicker, easier and cheaper for you. Our books have clear instructions and plenty of photographs that show each step. Whether you’re a beginner or a pro, you can save big with Haynes!
--Step-by-step procedures
--Easy-to-follow photos
--Complete troubleshooting section
--Valuable short cuts
--Color spark plug diagnosis
...



38017
General Motors Chevrolet Cobalt & Pontiac G5 Haynes Repair Manual for all models from 2005 thru 2007

Our Price: $24.95

With a Haynes manual, you can do it yourself…from simple maintenance to basic repairs. Haynes writes every book based on a complete teardown of the vehicle. We learn the best ways to do a job and that makes it quicker, easier and cheaper for you. Our books have clear instructions and plenty of photographs that show each step. Whether you’re a beginner or a pro, you can save big with Haynes!
--Step-by-step procedures
--Easy-to-follow photos
--Complete troubleshooting section
--Valuable short cuts
--Color spark plug diagnosis
...



38020
General Motors Haynes Repair Manual covering Buick Skylark, Chevrolet Citation, Oldsmobile Omega and Pontiac Phoenix for 1980 thru 1985

Our Price: $24.95

With a Haynes manual, you can do it yourself…from simple maintenance to basic repairs. Haynes writes every book based on a complete teardown of the vehicle. We learn the best ways to do a job and that makes it quicker, easier and cheaper for you. Our books have clear instructions and plenty of photographs that show each step. Whether you’re a beginner or a pro, you can save big with Haynes!
--Step-by-step procedures
--Easy-to-follow photos
--Complete troubleshooting section
--Valuable short cuts
--Color spark plug diagnosis
...





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