code 24 1989 gmc 1500 sierra

10

Asked by Feb 09, 2014 at 05:07 PM about the GMC Sierra 1500

Question type: Maintenance & Repair

I have a code of 24 on a 1989 GMC 1500 Sierra. Any good ideas on where to look. I have replaced ecm, pigtail on transmission speedometer gauge.

1 Answer

20,265

Replace the speed sensor.You will find the VSS (vehicle speed sensor) on the left side of the tail shaft of the trany. Please let me know how it goes

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