2010 Cadillac SRX Recalled for Potential Engine Knock
Hear that obnoxious metallic-sounding noise coming from the engine? It's not loud diesel clatter but engine knock, and it's doing damage to that pricey piece of aluminum/iron. General Motors has issued a recall to prevent this particular situation from occurring with the 2010 Cadillac SRX Turbo.
SRXs equipped with the turbocharged 2.8-liter V-6 and manufactured from last September through March are being recalled to recalibrate the engine software, which in factory trim increases turbo boost pressure in response to retarded spark timing when low-octane fuel is used. Combined with a decently heavy foot, the resulting pre-ignition and higher combustion chamber pressures could then cause the piston or conrod to fail, leading to a very unhappy engine and SRX owner. Of course, high-octane fuel is generally a given with turbocharged engines but refueling mishaps happen for one reason or another.
The revised electronics programming will help the V-6 cope with sub-91-octane fuels but prolonged use of regular and mid-grade gasoline is not recommended.
Affected owners may contact Cadillac Customer Assistance at 866-982-2339 or visit the owner center on the Web at gmownercenter.com. The NHTSA can be reached at 888-327-4236 or at Safercar.gov.