DO TRANSMISSIONS HAVE A SERIAL NUMBER OR HOW DO YOU IDENTIFY THEM

Asked by reneg Dec 03, 2011 at 10:38 PM about the 1994 GMC Sierra 1500 C1500 SL Extended Cab LB

Question type: Maintenance & Repair

2 Answers

425

There will be one of two things. There will be a small metal tag on one of the bolts holding the tranny case together, OR, more commonly, there will be numbers and letters cast into thetrans case itself, like TH400, or 4L60E for example.

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and some just have metric on the pan.

1 people found this helpful.

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