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The all-new GMT900 generation of the Silverado/Sierra arrived in the last quarter of 2006 as a 2007 model. It features a redesigned exterior, interior, frame, and suspension as well as a power increases on certain engines.
DAVID A LAWSON @davidalaws65413
Rep: 1
Posted: Dec 23, 2025
My check engine light is on. Says ground wire evaporator. What is broken.
Is this a good question?
1 Comment:
David, we need more information. First, what year and engine is your Sierra?
If the check engine light is on, there will be Diagnostic Trouble Codes (DTCs) available. What is the exact code you got for the CEL?
Dec 23, 2025 by Jerry Wheeler
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David, we need more information. First, what year and engine is your Sierra?
If the check engine light is on, there will be Diagnostic Trouble Codes (DTCs) available. What is the exact code you got for the CEL?
by Jerry Wheeler