Consumer could smell anti-freeze. Took vehicle to Chevrolet and they replaced heater core. Within five hundred miles anti-freeze smell reoccurred. Consumer has had three heater cores replaced.*

- Clayton, IA, USA

The heating core in vehicle failed on four separate occasions, dealer unable to explain why this part keeps failing.

- West Allis, WI, USA

The heating core in vehicle failed on four separate occasions, dealer unable to explain why this part keeps failing.

- West Allis, WI, USA

Heater core broke, causing anti freeze to leak out. Replaced 3 heater cores and a head gasket. Manufacturer willing to pay for the head gasket, but states that it is normal wear and tear.

- Randolph, NJ, USA

Ongoing problem wth a defective heater core manufactured by ac-delco. Vehicle has had 5 heater core replacements from Sep. 97 to the present. Dealer/ mfr. Notified. Seeking help from NHTSA in this matter.

- Livingston County, NY, USA

Vehicle has had seven heater cores replaced.

- Vista, CA, USA

When driving consumer can hear a loud knocking and grinding noise coming from the rear of the vehicle. Also, heater core has been replaced four times. In addition, whenever putting anti-freeze into the vehicle the anti-freeze will leak out. In addition, transmission has been replaced.

- Okemos, MI, USA

Heater core failed several times resulting in coolant leaking.

- Torrance, CA, USA

Heater core failed resulting in coolant leak.

- Torrance, CA, USA

The engine check light/coolant light came on when driving fast, letting driver know to check coolant. Coolant was pouring out through the air conditioning line. Within a minute the fluid was all gone. Consumer has gone through five heater cores. July 16, September 11 and November 24. Also blew the head gasket on December 22, 1997. Vehicle is now being repaired for heater core. Due to defective heater core, there was engine damage. Dealer said they have done everything manufactured. Told them to do, but they still could not find a cause for defects.

- Apple Valley, CA, USA