GMC Sonoma Trouble Codes

Browse GMC Sonoma Trouble Codes questions and answers. Choose a question that matches your symptoms.

18 discussions

2004 GMC Sonoma Trouble Code

2004 GMC SONOMA
I Have A Code P0449 How Do I Fix It
1 ANSWER
Asked by Woodynla

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 Fuel/P0171

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

Stalling/rpm's Surging, Codes B0090, U1096 And...

2002 GMC SONOMA
My Truck Is Stalling And Surging When Put Into Gear I Hit The Gas And It Will Stall Out But Idles Fine For The Most Part Has Little Surges...
3 ANSWERS
1 IMAGE
Asked by dustin.alexander

2002 GMC Sonoma P0300 & P0155 Codes

2002 GMC SONOMA
Svc. Engine Soon Lite Came On. Scan Gave Me P0300 Code: Random Misfire, And P0155: Ho2s Heater Performance Bank 2 Sensor 1. Replaced O2...
7 ANSWERS
1 IMAGE
Asked by tommyb79

2002 Sonoma P0171

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 Sonoma P0171

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

2002 GMC Sonoma GMC Sonoma Code P0301

2002 GMC SONOMA
About One Every 4 To 5 Months I Get The Code P0301, #1 Cylinder Misfire. It Almost Always Sets When The Truck Is Idling. The Code Clears...
5 ANSWERS
Asked by sncdoc

P0300 Code

2001 GMC SONOMA
Truck Is Running Lean, But Drives Good. Starts Acting Up When I Am Going Slow And In Idle But Not All The Time. I Have Replaced Fuel Tank...
2 ANSWERS
Asked by Eli91013

P0420

2001 GMC SONOMA
I Have A 2001 Gmc Sonoma 2wd 2.2 Liter And Have The P0420 Code For Catylyst Efficiency Low Bank One.. I Have A New Cat And Rear O2 Sensor So...
1 ANSWER
Asked by tallman1781

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