GMC Troubleshooting Questions? Ask a Mechanic for Answers
My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
I would have a scan tool plugged into the vehicle to check for any fault codes set.This should be a scan tool that can communicate with all computers in your vehicle.If any codes are set they will need diagnosed to locate and correct any fault.I would have the injectors checked/tested for any issues as well as the turbo system.It is best to have the vehicle checked over fully for any issues before purchasing it but these are some common issues that should be checked as well as the engine checked over for any major oil leaks.Injector replacement can be expensive.
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