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2003 SLS codes


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Today my wife & I looked at a 2003 SLS with 48,000 miles showing. I tried to get the codes to display, but failed. I did get the panel to go blank and all of the pixels in the DIC to display at once, but after that I couldn't get it to scroll any codes.

The DIC did let me know that the suspension needed work.

The car had been sitting and with the engine off, the battery voltage was 10.4, which may explain the suspension warning.

My question is three fold.

1. Can a 2003 display codes like my 94 SLS? And if so, what button sequence do I use to get them to display?

2. Can someone post a list code for the 2003?

3. Opinions on a 2003.

Are they as prone to head gasket problems as were the earlier N*'s were?

Is the Stabilitrack prone to failure and what are it's weak points?

Can the 03's burn regular gas?

As I have been primarily concerned with a 1994, I haven't paid as much attention to the newer Caddies. :unsure:

Thanks for any input.

Britt

Britt
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Bruce

2023 Cadillac CT4-V Blackwing

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Are they as prone to head gasket problems as were the earlier N*'s were?

No.

Is the Stabilitrack prone to failure and what are it's weak points?

No. It uses Magnaride struts. Much simpler and no mechanical valves.

Can the 03's burn regular gas?

Yup. 2000+ were designed for regular.

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does it really matter if you use 87 on a 1998 or 1999?

If your car was designed to use premium, if you use 87, it will be fine unless it knocks. If it IS going to be prone to knock, it will knock in the hot weather especially. Listen carefully pulling away from a light and accelerating, it will sound like rattling, teeth chattering, and have a woodlike sound. If I use 87 in the hot weather, I knock. Your car has a knock sensor, if it senses a knock, it will retard the ignition. Some of us feel the retarded ignition via poor performance others do not.

You might check your gas mileage with 87 vs 89, you might be happier with 89

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Britt, there were two changes that took place that made the head bolts bite better, in 2000 there was a change and in either 2003 or 2004 there was a change in the bolt.. Hopefully someone will have the answer to that. It involves size and pitch

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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You know Britt, assuming that you pushed the correct combination, and the codes did not dump, it could have been related to the low battery power do you think?

I just scanned my manual looking for anything on the DIC not flashing the codes and could not find anything. IF you got the cluster test, I would have thought that you were in, maybe the lack of power could not boot the system up. Did you take it for a ride?

Did you try pulling the codes with the engine running to boost the power available?

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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The 2003 has roller cams and coil on plug I believe. That must be nice. Does anyone know if this engine has an air pump?, and can you explain why they started using it?, is it related to the emissions/egr system?

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Britt, to show my appreciation for the terrific emails you send me, I did some searching for you on the 2003 Seville, this is from GM/Cadillac

New For 2003

Magnetic Ride Control

XM Satellite Radio now available with navigation system

Two new exterior colors

Michelin tires on SLS and STS

Chrome wheels standard on STS

2003 SEVILLE CONTINUES ITS LEADERSHIP ROLE IN THE LUXURY MARKET

It has been called the best front-wheel-drive performance car on the road, and for 2003, the Seville continues as a leader in the luxury market by offering exceptional performance, Magnetic Ride Control, the industry's first semi-active suspension technology and XM Satellite Radio.

"The STS offers buyers a true prestige luxury sedan that is artfully styled, with superior innovative technology, class-leading all-weather performance and precise handling," said Steve Rosenblum, Seville marketing director. "Seville is the performance luxury flagship at Cadillac and GM."

Magnetic Ride Control

New on the Seville, Magnetic Ride Control uses a revolutionary damper design that controls wheel and body motion with magneto-rheological (MR) fluid in the shocks and struts. By controlling the current to an electromagnetic coil inside the piston of the damper, the fluid's consistency can be changed, resulting in continuously variable, real- time damping. As a result, drivers feel a greater sense of security, a quieter, flatter ride and more precise, responsive handling, particularly during sudden, high-speed maneuvers.

The system isolates and smoothes the action of each tire, resulting in less bouncing, vibration and noise. On bumpy or slick surfaces, the system integrates with traction control to assure maximum stability. It also works with ABS to keep the vehicle balanced and poised. It is the only system without electro-mechanical values and no small moving parts. It consists of MR fluid-based monotube struts, monotube shock absorbers, a sensor set and on-board controller.

Seville SLS gets new look

The Seville SLS gets a freshened exterior look in 2003. Body-colored grille and foglamps added to the SLS complete a monochromatic strategy for Seville. The monochromatic exterior look began in 2000 with the STS taillamps, rocker moldings and wheels.

XM Satellite Radio

For 2003, the Seville will offer XM Satellite Radio. XM radio features 100 coast-to-coast digital channels, including 71 music channels (more than 30 of them commercial-free) from hip-hop to opera, classical to country, bluegrass to blues and 29 channels of sports, talk, children's and entertainment programming. XM also brings to the car, for the first time on radio, a diverse selection of 24-hour news sources previously available only in the home. And XM's next-generation sound-quality technology provides superior sound remarkably close to compact disc. XM radio also complements the premium sound system that debuted on the Seville in 2002, and is available with the vehicle's navigation system. Cadillac was the first automaker to offer XM as factory installed.

Seville also offers two new exterior colors in 2003 and new Michelin tires appear on the SLS and STS, plus chrome wheels are now standard on STS.

Technological features

In 2000, Cadillac made significant enhancements to the STS, including its highly acclaimed Northstar system and its sophisticated chassis control system. It also features world-class technology in stability control, Continuously Variable Road-Sensing Suspension, Performance Algorithm Shifting and much more.

The Cadillac Seville is designed to appeal to confident, savvy, discriminating buyers. They have a strong appreciation for leading-edge technology and control, and look for an invigorating driving experience in a sophisticated package.

Seville history

Cadillac first used the Seville nameplate on coupe editions of the Eldorado series in 1956. The name surfaced again in the 1976 model year, when Cadillac introduced it as its first import fighter. Cadillac redesigned the current Seville in 1998, a symbol of Cadillac's determination to assert its presence in the global luxury market. Competing in the prestige luxury sedan segment in more than 40 countries across the globe, Seville is the first Cadillac built in both left- and right-hand drive since 1941.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Now this is service! :lol:

2003CadillacSevilleSpecifications.jpg

continued

2003CadillacSevilleSpecifications2.jpg

continued

2003CadillacSevilleSpecifications3.jpg

Cool.....

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Red line for the NS is 6,500 and 6,700 rpm wowie

It does have COP, regular gas, and the AIR system (pump)

2003CadillacSevilleEngineSpecificat.jpg

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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I found this in the 2002 Eldorado information:

Offering both 275- and 300-horsepower variants, the 4.6-liter aluminum 32-valve Northstar V8 remains the heart of the Eldorado. The engine was redesigned in 2000, resulting in significantly lower emissions, quieter operation, and better fuel economy running on regular unleaded fuel. All without losing the performance that has long been Northstar’s signature. The 2000 engine featured an all-new head design, new intake manifolds, coil-on-plug ignition and rolling cam runners to reduce friction.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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