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sprinkles08
sprinkles08, ASE Certified Technician
Category: GMC
Satisfied Customers: 21987
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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2005 GMC Yukon Denali XL stability system diable light is

Customer Question

2005 GMC Yukon Denali XL stability system diable light is on
JA: Just to clarify, what are the exact lights you're talking about?
Customer: on the dashboard
JA: What is the model of your '05 GM?
Customer: Yukon Denali XL
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: i want to find out what it could be i havent tried anything yet
JA: Anything else you think the mechanic should know?
Customer: i also have traction contril light on and i have a code P0449
Submitted: 6 months ago.
Category: GMC
Expert:  sprinkles08 replied 6 months ago.

Hello and welcome to JustAnswer!

P0449 is for the evap system vent valve and won't be related to the other warning lights. This could either be wiring or the valve, more likely the valve.

The stability and traction control lights have come on because the ABS module has seen a problem somewhere in the system that will prevent proper traction control functions and set a fault code. There are many things that could be causing the lights ranging from the brake switch, speed sensors, the ABS module, hydraulic control unit or pump motor, wiring, steering angle and yaw sensors. The first step in diagnosing these lights will be to use a capable scan tool or code reader to see what fault codes are setting in the ABS module ad testing can be done from there.