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Re: 4L80E starting off in 2nd intermittently
Posted to Transmission Forum on 11/30/2016 3 Replies

Hello, Patrick

I've had a number of intermittent problems on late '90s GM pickups caused by worn ignition switches. In some instances, various shops had recommended replacing the transmission.

In these cases, voltage at the I/P fuse box on fuse #20 would d... Login to read more.

3 Replies Received (View Replies)