Saturn · Known Issues

1994 Saturn S-Series Problems: 1 Known Issue

1994 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated November 2026

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1994 Saturn S-Series has 1 documented issue. None of the listed issues is rated critical; this is not a complete reliability assessment. Across all issues with published estimates, repair costs range from $50 to $300. DIY maintenance guides at au7o.io.

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All 1 Known Issue

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On the 1991-1999 Saturn S-Series, the Saturn S-Series uses a Distributorless Ignition System (DIS) with a waste-spark coil pack mounted on top of the engine. The coils and the Ignition Control Module (ICM) fail with age, throwing P0300-series misfire codes (commonly P0301 or P0302). A subtle but documented contributor is poor grounding: the ICM grounds to the transmission bellhousing via a stud, and corrosion on this ground path causes intermittent misfires that are easily misdiagnosed as coil failure. The waste-spark design uses the #4 plug firing on the compression stroke to fake a cam signal, so if the #4 coil weakens, the DIS may also lose its cam-position reference, causing cascading driveability issues.

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

Common Symptoms

Misfire DTC P0301, P0302, P0303, or P0304
Rough idle or shaking at idle
Hesitation or stumble on acceleration
Check Engine Light (often flashing under load)
Reduced fuel economy
Hard starting when warm

How to Fix

Diagnose by swapping the suspect coil with a known-good cylinder coil — if the misfire follows the coil, replace it. Before condemning the coil pack, inspect and clean the ICM-to-transmission ground stud: remove the bolt, wire-brush the contact surface on the transmission case down to bare metal, apply dielectric grease, and reinstall. Also clean and grease the ICM connectors. If grounds and coil swap don't fix it, replace the full coil pack assembly (~$80-150). Always replace the spark plugs and plug wires at the same time — the OE Champion plugs are specified for this engine; aftermarket platinum/iridium can cause its own misfires on the waste-spark system. Torque coil bolts carefully; the aluminum threads strip easily.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

AM Autoparts AM-25049835 Saturn 1.9L DIS ignition coil
Two coils are used; order only the diagnosed quantity and confirm model/year.
AM Autoparts
Standard Motor Products LX-385 ignition control module
Confirm OE interchange and connector before purchase; not the 1996-1999 branch.
Walmart
Genuine GM 19178836 electronic ignition control module
Not for 1991-1995; confirm VIN/model and connector.
GMPartsGiant

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$50 - $300

Research This Issue

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Community Reported

Low ConfidenceVerifiedUpdated Nov 7, 2026

NHTSA Recalls1 recall

EXTERIOR LIGHTING

CERTAIN PRO-A MOTORS CORNER LAMPS, TURN SIGNALS, AND HEADLIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON CERTAIN PASSENGER VEHICLES LISTED ABOVE. SOME COMBINATION LAMPS THAT ARE NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT.

Campaign #06E02600023/03/2006

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Frequently Asked Questions

What are the most common Saturn S-Series problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1994 Saturn S-Series has 1 documented issue. The documented issue is: DIS Ignition Module / Coil Pack Failure Causing Cylinder Misfires. None are rated critical, but regular maintenance is recommended.

Is the Saturn S-Series reliable?

The 1994 Saturn S-Series has 1 known issue compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. None of the matching records is rated critical; this is not a complete reliability assessment. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Saturn S-Series problems?

Repair costs for known Saturn S-Series issues range from $50 to $300, 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 1991-1999 Saturn S-Series DIS Ignition Module / Coil Pack Failure Causing Cylinder Misfires?

The Saturn S-Series uses a Distributorless Ignition System (DIS) with a waste-spark coil pack mounted on top of the engine. The coils and the Ignition Control Module (ICM) fail with age, throwing P0300-series misfire codes (commonly P0301 or P0302). A subtle but documented contri… Repairs typically run $50-$300. Severity: medium.

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.