For 1990-2009 cars

# Engine Rattle Noise Rough Idle And SES Light With DTCs P0016 And/Or P0017 - Inspect Timing Belt Tensioner

Subject: | Engine Rattle Noise, Rough Idle, and SES Light with DTCs P0016 and/or P0017 - Inspect Timing Belt Tensioner

Models: | 2008 Saturn Astra

| with Last 8 Digits of VIN Lower than 85120797

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

### Condition/Concern:

Some customers may comment on an engine rattle noise, rough idle, and SES light with DTCs P0016 and/or P0017. This may be the result of a broken timing belt tensioner spring.

### Recommendation/Instructions:

If this concern is encountered, inspect for a loose timing belt and broken timing belt tensioner spring. If the timing belt tensioner spring is broken, it will move freely without applying tension to the belt. If a broken timing belt tensioner is found, replace the timing belt and timing belt tensioner using the part numbers listed in the parts catalog.

If this concern re-occurs AFTER the timing belt and tensioner have been replaced, please contact Brand Quality Manager, Dave Peacy, at 586-947-7385 to discuss further direction. If Dave is not available, please leave him a voice mail that includes this PI number, the last 8 digits of the VIN number, a brief description of the concern, and your contact information. Dave will call you back by the end of the next business day.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.