driving at 35 mph when engine stopped running and failed to restart. inspection determined timing chain had failed due to failure to keep tension. the timing chain tensioner on Ecotech 2.2 engines from 2000-2004 had tensioners which failed to keep the chain taught which lead to GM redesigning the tensioner. this problem was never recalled and consequentially this occurred in almost all of these engines and caused severe engine damage to pistons and valves, requiring a complete engine overhaul somewhere's around 100k miles on up. GM's new tensioner design solved this and the part cost a mere $50 yet no recall ever happened. I had to put a new engine in my Saturn and spent over 8000 dollars...
- NHTSA ID
- 11485334
- Incident
- Jul 22, 2022