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ls1nova71 · 09-15-2020, 06:10 PM

It's in limp mode, many things can cause this. A lot of times in a swap its because the transmission doesn't have power, have you checked that? Have you scanned for any codes?

09-15-2020, 06:10 PM	#2
ls1nova71 Registered User Join Date: Dec 2009 Location: Independence Mo Posts: 4,118	Re: 4L60E Trans only shifts 2 and 3 It's in limp mode, many things can cause this. A lot of times in a swap its because the transmission doesn't have power, have you checked that? Have you scanned for any codes? __________________ My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html