# 2003 GMC Sierra 1500 Engine Shudder/Vibration

**URL:** <https://community.cartalk.com/t/2003-gmc-sierra-1500-engine-shudder-vibration/1719>\
**Category:** Maintenance/Repairs\
**Created:** [July 14, 2007, 6:29pm UTC](https://community.cartalk.com/t/2003-gmc-sierra-1500-engine-shudder-vibration/1719 "2007-07-14T18:29:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Dale\_Barnett](https://avatars.discourse-cdn.com/v4/letter/d/b4bc9f/32.png) [@Dale\_Barnett](https://community.cartalk.com/u/Dale_Barnett)\
**Post date:** [July 14, 2007, 6:29pm UTC](https://community.cartalk.com/t/2003-gmc-sierra-1500-engine-shudder-vibration/1719/1 "2007-07-14T18:29:54Z")

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Since bought new, this vehicle has an engine shudder/vibration that occurs routinely at about 42mph thru 45mph. Also, with light pedal pressure from a stop, around corners and while going slow thru parking lots. More noticeable during cold weather. Any ideas?

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**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\
**Post date:** [July 14, 2007, 6:33pm UTC](https://community.cartalk.com/t/2003-gmc-sierra-1500-engine-shudder-vibration/1719/2 "2007-07-14T18:33:38Z")

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Do you mean it happens at about 45 mph and while driving slow (and straight?) in a parking lot and while turning (at what speeds?) ?

```
Could it be described as a "clicking?"
```

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**Author:** ![Roadrunner](https://avatars.discourse-cdn.com/v4/letter/r/d2c977/32.png) [@Roadrunner](https://community.cartalk.com/u/Roadrunner)\
**Post date:** [July 14, 2007, 7:14pm UTC](https://community.cartalk.com/t/2003-gmc-sierra-1500-engine-shudder-vibration/1719/3 "2007-07-14T19:14:10Z")

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I’m going to suggest a loose or possibly cracked vacuum hose or other air intake (loose plenum bolt).