Symptoms:

  • Excess endplay
  • Driveline noise

Cause:

Normal wear of the shim.

Correction:

This selective rear unit endplay shim installs between the rear reaction carrier support and the case bearing and allows for adjustment to the total and top unit endplay.

350, 350C, 4L60, 4L60-E, 4L65-E, 4L70-E

Shim
Part No. 77406-10

Package Quantity: 10

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Sonnax has designed .010" thick rear endplay shim 77406-10 to allow adjustment to the total and top unit endplay in GM 350, 350C and 4L60 (700-R4)/4L60-E series applications. This selective shim installs between the rear reaction carrier support and the case bearing. The total unit endplay (tested by dial indicator on the input shaft) should not exceed .036" (.005" to .036").

  • Material: Steel
  • Thickness: 0.010"
  • Inner Dia.: 1.725"
  • Outer Dia.: 2.310"

February 22, 2016

Too Close For Comfort: Pinpointing 4L60-E Gear Train Assembly Problems

Steve Garrett

Topics: Transmission GM 4L70-E Transmission 4L60-E Transmission 4L65-E Transmission

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  • 77406 10