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Old 05-17-2007, 02:12 PM
2000CAYukon 2000CAYukon is offline
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Re: 4L60 stops pulling after 40 miles

The code is probably P1870 but you should have it scanned to be sure. Also, a transmission capable scanner should be used to diagnose the transmission. It can verify shift solenoids and line pressures.

Start with the code(s) and go from there.

//2000CAYukon
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