NHTSA lists 7 safety recalls and 153 owner complaints for the 1999 Oldsmobile Silhouette. Most complaints involve engine and engine cooling (46) and structure (18). The EPA rates it 18 mpg combined.
DORMAN IS RECALLING 979 STEERING KNUCKLES, DORMAN P/NOS. 697-902 AND 697-903, SOLD UNDER DORMAN'S "OE SOLUTIONS<SUP>TM</SUP>" BRAND NAME, AND NAPA P/NOS. 7-8502 AND 7-8503 WHICH WERE SOLD FOR REPLACEMENT USE ON THE VARIOUS VEHICLES LISTED ABOVE. A POTENTIAL MATERIAL OR DESIGN DEFECT COULD RESULT IN THE STEERING KNUCKLE BREAKING IN THE HUB AREA.
K2 MOTOR IS RECALLING 1,921 AFTERMARKET HEADLAMPS OF VARIOUS MODELS SOLD FOR USE ON THE ABOVE LISTED VEHICLES. THESE HEADLAMPS ARE MISSING THE AMBER SIDE REFLEX REFLECTOR WHICH FAILS TO CONFORM WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT."
CERTAIN DELPHI FUEL PRESSURE REGULATORS, P/NOS. FP10020-11B1, FP10026-11B1, AND FP10027-11B1, SOLD AFTER JANUARY 9, 2007, AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES LISTED ABOVE. THE UNIVERSAL PRESSURE REGULATORS (UPR) WERE PRODUCED WITHOUT AN O'RING AND RETAINER.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
“REPEATED INTAKE MANIFOLD GASKET LEAK / FAILURE - HAD TO REPLACE TWICE IN LESS THAN 100,000 MILES - FIRST TIME AT JUST OVER 36,000 MILES. NEVER OWNED A CAR WHERE I HAD TO REPLACE AN INTAKE MANIFOLD GASKET ONCE, LET ALONE TWICE AND VIRTUALLY EVERY CAR MY FAMILY HAS OWNED HAS BEEN MAINTAINED AND DRIVEN OVER 100,000 MILES. SEARCHING THE INTERNET YOU SEE THE GM 3.4 LITER ENGINE IN 1999 ERA THIS IS A COMMON COMPLAINT/PROBLEM. ALSO THE ORIGINAL OLDSMOBILE DEALER ACKNOWLEDGED IT WAS A KNOWN ISSUE WITH THIS ENGINE. THERE IS ALSO A LAWSUIT WWW.DEXCOOLSETTLEMENT.COM SHOWING HOW PREVALENT THIS ISSUE IS - YET GM REFUSES TO ACKNOWLEDGE IT IS A DEFECT AND TAKE CARE OF THEIR CUSTOMERS AND VEHICLE OWNERS BY REPAIRING THESE VEHICLES AND CHANGING THE GASKET DESIGN. IT WAS BAD ENOUGH HAVING TO SPEND CLOSE TO $500 TO REPAIR THIS ON MY OLDSMOBILE WITH JUST OVER 36,000 MILES ON IT, NOW I AM TOLD TO PAY CLOSE TO $1,000 TO HAVE IT REPLACED AGAIN! GM CUSTOMER ASSISTANCE INSISTS THERE IS NO DEFECT, THERE IS NOTHING ABNORMAL ABOUT THIS THAT REQUIRES ANY CORRECTIVE ACTION OR "ASSISTANCE" FROM GM. THEY FURTHER CLAIM GM ENGINEERS HAVE REVIEWED THE INCOMING DATA TO CUSTOMER ASSISTANCE AND…”
“1999 OLDSMOBILE SILHOUETTE MOTOR HAD FALLEN DOWN.*MR THE DISCOVERED THE CRADLE BOLT ON THE PASSENGER SIDE WAS GONE. THE CONSUMER UNSCREWED THE DRIVERS BOLT AND SAW THAT IT CONTAINED RUST. THE MANUFACTURER WOULD NOT COVER THE COST BECAUSE THEY STATED IT HAD BEEN TAMPERED WITH BEFORE THE CONSUMER PURCHASED THE VEHICLE. THE OUTER TIE RODS AND HUB BEARINGS WERE REPLACED. *JB”
“I WAS BACKING OUT OF MY PLACE AT WORSHIP WHEN A FRIEND TOLD ME I HAD NO BACKUP LIGHTS. I WENT STRAIGHT TO THE AUTO SUPPLY STORE. REPLACING THE BULBS DID NOT WORK. THEY TOLD ME IT HAD TO DO WITH THE TRANSMISSION. I WENT ELSEWHERE. SAME STORY. WENT TO THE HE TRANSMISSION STORE. THEY SAID MY TRANSMISSION WAS GOING OUT AND IT WOULD COST ME $1897.00 TO FIX IT. TWO LITTLE BULBS. THAT WAS A YEAR AGO AND I'M STILL DRIVING IT. I TRY TO BACK INTO SPACES SO I DON'T HAVE TO BACK OUT. I WENT TO THE DEALER AND THEY SAID TO REPLACE THE WIRING ASSEMBLY WOULD COST MORE THAN THE CAR IS WORTH. AND THE SEAT BELT CLICKS IN BUT SOMETIMES SLIPS OUT IF I STOP QUICKLY IF SOMEONE CUTS ME OFF. NOT GOOD AT ALL.THE POWER TRAIN IS ERRATIC AT BEST. I WONDER IF I'M GOING TO MAKE IT HOME QUITE A LOT AND I AM DISABLED. IT SHUDDERS WHEN IT STARTS OUT, MAKING IT DANGEROUS IN TIGHT DRIVING SITUATIONS(CHICAGO).IT SLIDES OR SLIPS. I'VE BEEN TOLD TIME AND TIME THERE'S NOTHING WRONG. BUT WHEN YOU TELL A CAR TO GO, IT SHOULD GO...ITS NOT SUPPOSED TO ACT LIKE A STUBBORN DUMB MULE! AND THE DOORS QUIT WORKING AS DID THE AC AND IT EATS TIRES EVEN THOUGH ITS ALIGNED AND BALANCED. I FIXED THE SHOWER WITH 25…”
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| Silhouette 2WD Auto 4-spd, 6 cyl, 3.4 L · Front-Wheel Drive | 16 | 23 | 18 | $3,550 | 494 |
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
7 safety recalls as of Oct 30, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
Owners filed 153 complaints with NHTSA. The most-cited components are engine and engine cooling (46), structure (18), power train (16). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 1999 Oldsmobile Silhouette at 18 mpg combined, depending on engine and drivetrain (1 version rated).