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Old 07-03-2008, 03:32 PM   #1
Dave12
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How do I know what Tranny I have?
99 Silverado LT nbs with 5.3. Do all these trucks have the
4L60E? Does anyone know the RPO code that will tell me?

Thanks,
Dave
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Old 07-03-2008, 05:46 PM   #2
NEUMANNZZ
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Re: How do I know what Tranny I have?
yeah, if its an automatic. just look underneath at the square pan.
O2 GMC RCSB 4.8L V8 AUTO 3.73's
rebuilt/beefed up 4L60E(at 43,000miles)
TRAIN HORNS(see pics in my gallery)
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Old 07-03-2008, 06:55 PM   #3
peekho
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Re: How do I know what Tranny I have?
I believe M30 is the code you'd want for 4l60E
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