This vehicle still presenting C0321 code after installing new shift motor on transfercase and will not shift from neutral to either 4wd or 2wd. before new motor codes were C0321,306,326,327
07 Tahoe 4wd
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07 Tahoe transfercase
Yes. You have to have the transfercase in neutral to install new motor and will not shift into 2wd or 4wd. Before changing motor I removed and manually shifted into 2wd to move vehicleComment
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4x4 shift motor relearn
I have had some of these require you to reflash the 4x4 module to get it working again but most will work by doing the shift motor relearn.
check tsb's for a reflash if relearn don't work
starting in 07 on gm there was a transfer case shift motor relearn in snap on software 14.4 or use tech 2.
just did one yesterday on a 08 the customers battery went dead and he lost 4x4 after that.
I went and did a transfer case shift motor relearn and all was good.
maybe this helpsRich Barton
C.R.B. RepairComment
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C0321 is for the transfer case lock solenoid circuit.Do the pinpoint tests of the circuit involved. A Miss-diagnosis of Slamming a non returnable part that doesn't fix the problem inevitably turns into a Mrs-Diagnosis , meaning uncompensated time, and Cow Support after the Boss has one.
After things return to normal and The Cow goes away ,The Boss will be back asking you where your hours are, and telling you not to over analyze problems and just crank out some hours , lol.Comment
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