How to reset service engine soon light 2001 gmc sierra. My dad, left me a PPE Xcelerator tuner just in case I needed it. The Service Engine Soon light is your vehicle’s way of telling you that it’s time to check on a specific issue. This covers GM full size trucks: Silverado, Sierra, Yukon, Tahoe, Suburban, Avalance, Escalade, Denali and H2. I thought OK let's get her home. The day it went on I went to autozone and had the code red. Help with Service Engine Soon light!! I have a 2001 GMC Sierra 2500 8. The automaker has found a way to fix it. to/ The dreaded service engine soon light can spell headaches for drivers. The Amazon Affiliate Link to OBD2 Scan Tool: https://amzn. Compare scanner methods vs. owh sz4n gz6p z9ql k4h