i have a 98 4x4 Jimmy. it gets stuck in third gear, sometimes. the main computer was replaced, new tranny. what could it be?

Asked by Dec 21, 2014 at 02:21 PM about the 1998 GMC Jimmy

Question type: Maintenance & Repair

gets stuck In 3rd gear, sometimes. when I turn off vehicle it fixes itself. I had the tranny replaced, main computer replaced. after replacing computer it seemed to fix the problem until a day ago. what could it be?

1 Answer

16,865

It's going into limp mode. You need to inspect the wiring harness for shorts and frayed wires. Are there any codes? Hard to belive there wouldn't be even one

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