GMC Sonoma P Codes (Powertrain) P0100 - P0199 P0171

Browse GMC Sonoma P Codes (Powertrain) P0100 - P0199 P0171 questions and answers. Choose a question that matches your symptoms.

6 discussions

Code P0171 Seems False

2003 GMC SONOMA

The Truck Has A Hard Start Condition If Left Sitting More Than A Day Without Starting. Whether Cold Or Warmed To Operating Temperature. It...

1 ANSWER

Asked by The_Wizzard

2003 GMC SONOMA

I Have A 2003 Gmc Sonoma 4cyl 2.2l With 140k Miles. It Has Had A Recurring Issue Where It Is Hard To Start When The Fuel Gauge Reads 1/4...

9 ANSWERS

1 IMAGE

Asked by archituethis

2002 GMC SONOMA

2002 Sonoma P0171 (system Too Lean Bank 1)replaced Ects,cat Conv, 02 Sensor,has Been Smoked For Leaks None Found, 02 Sensor Is Reading...

1 ANSWER

Asked by brdsmith15

2002 GMC SONOMA

2002 Sonoma, P0171 System Too Lean, Is Dumping Fuel, Runs Pretty Good Until Reaches Temp, Black Smoke Coming From Exhaust?

4 ANSWERS

Asked by brdsmith15

2001 GMC SONOMA

My Service Engine Soon Light Comes On Occasionally And Has Stored The Code P0171. I Can,t Find Any Vacuum Leaks And The Vehicle Has...

1 ANSWER

Asked by lvmark

1997 GMC SONOMA

As The Tittle Says. I Get A Lean Code P0171 But Only If I Use 87 Octane. I Verified This By Filling The Tank 3/4 Of The Way With 89 And...

15 ANSWERS

Asked by serpentracer

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