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2014 - 2015 Corvette: GM TechLink: 6.2L Engine Bell Housing Rattle

Subject:  6.2L Engine Bell Housing Rattle
Model and Year:  2014 - 2015 Corvette Equipped with LT1
Source:  GM TechLink
Page Number:  NA
Date:  November 7, 2014

A rattle noise at the engine bell housing may be heard on some 2014-2015 Corvettes built with the 6.2L engine (RPO LT1) and an automatic transmission.

Follow the appropriate Service Information diagnostic procedures to determine if the rattle noise is coming from the Driveline Support Assembly (DSA) or the transmission flex plate. If the rattle is coming from the flex plate, it will only be heard at idle from the front of the vehicle while in Park.

If it's determined that the rattle noise is coming from the flex plate (Fig. 7), raise the vehicle on a hoist and pull the front bell access cover. The noise will be coming from the hole.

2014 - 2015 Corvette LT1 Bell Housing Rattle

TIP:   Check that the pinch clamp bolt is tight before replacing the front flex plate. The loose bolt condition results in the same noise. This is an easy check before starting a major service procedure.

Do not reinstall the old flex plate even if it looks OK as the cause of the rattle may not be visible.

Unlike the flex plate rattle, a DSA rattle noise typically occurs at or just off idle and will be louder when observed via the rear bell housing access plug. (Fig. 8)

2014 - 2015 Corvette LT1 Bell Housing Rattle

When performing repairs for a flex plate rattle or DSA rattle, refer to the latest information in the Service Information:

  • #13-04-17-001 – Driveline Support (Torque Tube) / Propeller Shaft Input to Front Hub Bearing Alignment
  • Document ID 3973764 – Driveline Support Assembly Replacement (with Automatic Transmission)

- Thanks to Tracy Lucas

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Comments (1)
Comment by johnny carrillo on Thu, Mar 23rd, 2017 at 4:21 PM
My 2015 Corvette has a rattling noise the dealership does not know where it‘s coming from. I told him about this article and they say this article is not a mechanic For $75,000 I should not have no issues but I have too many issues with his car Two transmissions air-conditioning went out heat it/air-conditioned seats went out the radio went out The screen went blank And now the car it‘s hard to put in park Do not buy the Corvette it is a nightmare
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