Problems · by component

1998 Oldsmobile Silhouette engine and engine cooling problems

32 owner complaints to NHTSA about the 1998 Oldsmobile Silhouette cite engine and engine cooling, 18% of all 178 complaints for this model year.

Complaints
32
18% of all complaints
Crashes
0
Reported by owners
Fires
0
Reported by owners
Injuries
0
Reported by owners
01 —Owner reports

What owners say about the engine and engine cooling

Verbatim from NHTSA complaints, newest first
“WHILE DRIVING VAN THE TEMPERATURE GAUGE SHOWED HOT AND HEATER STOPPED BLOWING HOT AIR FEW MINUTES LATER IT COOLED BACK DOWN AND STARTED BLOWING WARM AIR AND IT CONTINUED TO DO THAT OVER AND OVER PUT A THERMOSTAT IN IT AND IT DID NOT HELP IT CONTINUED TO DO THE SAME THING IT IS FULL OF WATER STILL NOT BLOWING ANY WARM AIR OUT AND STEAMING OUT THE EXHAUST. *TR”
Owner complaint to NHTSAFiled Jan 7, 2012Engine and engine coolingODI 10442808
“TL*THE CONTACT OWNS A 1998 OLDSMOBILE SILHOUETTE. DURING A ROUTINE INSPECTION, A TECHNICIAN STATED THAT THERE WAS AN ABNORMAL OIL LEAK. THE OIL LEAKAGE INCREASES THE RISK OF AN ENGINE COMPARTMENT FIRE. NO REPAIRS WERE MADE AT THE TIME OF INSPECTION. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS 80,000 AND THE CURRENT MILEAGE WAS 86,000.”
Owner complaint to NHTSAFiled Apr 24, 2009Engine and engine coolingODI 10266634
“MY 1998 OLD SILHOUETTE HAD INTAKE MANIFOLD GASKET REPLACED AT 69, 000 MILES AND THEN 8 MONTHS AT 73 000 MILE MY CAM BROKE IN HALF WHILE I WAS DRIVING AT 25 TO 30 MPH UNKNOWN WHY OR HOW MUCH MORE DAMAGE IS DONE AT THIS TIME. INVESTIGATOR IS COMING OUT TO CHECK WHAT HAD HAPPEN . *TR”
Owner complaint to NHTSAFiled May 17, 2008Engine and engine coolingODI 10228077
“WE PURCHASED A VAN IN GOOD WORKING ORDER IN 04/2006. IT WAS USED PREVIOUSLY BY ONE OWNER SINCE BEING PURCHASED NEW. IN NOVEMBER 2007- IT BEGAN OVERHEATING AND LOSING COOLANT. THE DIAGNOSIS IS NOW REPLACEMENT OF HEAD GASKET AND POSSIBLE INTAKE MANIFOLD GASKET. THIS IS A VERY COMMON PROBLEM WITH THIS PARTICULAR ENGINE. GM HAS REFUSED TO HELP THEIR CONSUMERS IN ANY WAY IF THERE IS NO WARRANTY. AS WITH ALL PROBLEMS THESE COULD FAIL DUE TO NORMAL WEAR AND TEAR, MILEAGE, AND OR AGE. I DO NOT BELIEVE THIS TO BE THE CASE IN NUMEROUS COMPLAINTS INCLUDING MY OWN! *TR”
Owner complaint to NHTSAFiled Dec 4, 2007Engine and engine coolingODI 10210764
“DT*: THE CONTACT STATED THE LOW COOLANT LIGHT ILLUMINATED AND THE VEHICLE WAS NOT WARMING UP PROPERLY. THE DEALERSHIP DETERMINED THE ANTIFREEZE WAS LEAKING INTO THE OIL. THE MANIFOLD GASKET WAS REPLACED. WHEN THE PROBLEM RETURNED THE MANIFOLD GASKET WAS REPLACED A SECOND TIME. TWO OTHER MEMBERS OF CONTACT'S FAMILY HAD THE SAME THINGS GO WRONG WITH THEIR VEHICLES. THE DEALER WON'T HELP THE CONTACT TO DEFRAY THE EXPENSES BECAUSE HE USED AN INDEPENDENT MECHANIC THAT ONCE WORKED AT THE DEALERSHIP. THERE WEREN'T TOO MANY DEALERSHIPS IN THE CONTACT'S AREA. ALSO, THE CONTACT KNEW MANY PEOPLE WHO HAD SIMILAR ENGINE PROBLEMS. *AK”
Owner complaint to NHTSAFiled Jan 6, 2006Engine and engine coolingODI 10147117
“BEGAN TO SEE COOLANT POOLING ON THE INTAKE MANIFOLD ASSEMBLY, TOOK THE VEHICLE IN TO FIND THAT THE INTAKE MANIFOLD GASKET NEEDED TO BE REPLACED. SHOULD HAVE BEEN A WARRANTY ITEM. DID NOT DAMAGE ENGINE, I WAS LUCKY AND SPOTTED THE SITUATION EARLY. *NM”
Owner complaint to NHTSAFiled Oct 23, 2005Engine and engine coolingODI 10140546

Showing 6 of 32 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 30, 2026NHTSA vehicle page

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Other 1998 Silhouette problem areas