2003 sierra 4wd trouble

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Feb 20, 2010 | 11:50 AM

jswc61

Thread Starter

Junior Member

Joined: Feb 2010

Posts: 1

2003 sierra 4wd trouble

2003 sierra 4x4.... 4wd doesn't work in 4HI but works perfect in 4LO... what might cause this

Mar 21, 2010 | 09:31 PM

GMC89

Junior Member

Joined: Jun 2009

Posts: 87

Transfercase??

Sounds like it to me...Something buggerd up inside.

Jan 21, 2023 | 09:12 PM

electech

Beginner

Joined: Jan 2023

Posts: 3

From: SC

Remove the TCM fuse for a few and reinstall. This fixes mine when showing neutral red but still in 2wd.

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