There are 2 stored owner reports matching the engine leading-label group for the 2005 GMC Savana in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)TL* THE CONTACT OWNS A 2005 GMC SAVANA 2500. THE CONTACT EXPERIENCED A LOSS OF COOLANT AND WAS CONSTANTLY HAVING TO REPLACE THE COOLANT. THE CONTACT DISCOVERED THE CYLINDER HEADS WERE DEFECTIVE. THE CONTACT TOOK HIS VEHICLE TO THE DEALER. THE DEALER STATED THEY COULD NOT DUPLICATE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE VIN WAS NOT AVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE REPAIR; HOWEVER, DECLINED TO PROVIDE FURTHER ASSISTANCE. THE FAILURE MILEAGE WAS 115,000.
TL*THE CONTACT OWNS A 2005 GMC SAVANA 2500. THE CONTACT EXPERIENCED A LOSS OF COOLANT, CRACKED CYLINDER HEADS, OXYGEN SENSOR FAILURE AND FLUID LEAKING ONTO THE EXHAUST. A LOCAL MECHANIC INSPECTED THE VEHICLE AND INFORMED THE CONTACT THAT THE RADIATOR CAP AND OXYGEN SENSORS NEEDED TO BE REPLACED. AFTER THE REPLACEMENTS, THE FAILURE RECURRED AND THE VEHICLE WAS TAKEN TO THE DEALER. THE DEALER ALSO REPLACED THE RADIATOR CAP AND THE OXYGEN SENSORS. THE FAILURE RECURRED A THIRD TIME, AND THE CATALYTIC CONVERTER WAS REPLACED. THE FAILURE CONTINUED AND THE CONTACT RETURNED TO HIS LOCAL MECHANIC, WHO LOCATED A SERVICE BULLETIN THAT IDENTIFIED THE FAILURE AND THE REMEDY. THE FAILURE CAUSED $10,000 WORTH OF DAMAGE TO THE ENGINE, WHICH ALSO HAD TO BE REPLACED. THE FAILURE MILEAGE WAS 352,000 AND CURRENT MILEAGE WAS 360,000. UPDATED 06/10/08. *LJ UPDATED 06/10/08
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.