GMC SIERRA

I Am Working On A Custom Truck That Has Had The Taillights Shaved. When They Did This They Removed The Tail Light Wiring Harness And...

The Low Reference Wire Going To Fpr2 Is Showing 12 Volts. Is This Correct?

New Motor Installed/all Grounds Are On But No 12v To Fuel Pump Relay/no Start Relay Test Good/pump Runs When 12v Jumped From Battery To...

Hey, I Have 3 Gauges Not Working (oil, Temp, Speedo) And Am Afraid It Related To The Ground Connection. Am Looking Under The Hood For...

I Cannot Get The Instrument Cluster To Light Up Mileage, Security, Fuel Level And Temperature Gauge. The Voltage, Speedometer...

I Bought A Non Running Project Truck (listed Above). My Problem Is A Few Actually, First I'm Not Getting Power Or Ground To The Fuel...

Was Getting All 4 O2 Codes, Replace All 4, Cleared Light Now Getting O2 Codes On Both Banks, Makes Truck Hard 2 Start When It's Warm...

I Installed An Aftermarket Stereo Head Unit. It Is A Kenwood 5707s With Bluetooth And Android Auto And Apple Car Play. All Of Those Features...

It Is Like The Brakes Are Still Sticking. Once I Tap The Brakes It Will Release And I Can Drive Again It Doesn't In Forward And Reverse...

Just Bought This Truck (k2500, Gas) Few Days Ago And Something Looks Weird In My Egr System. The Egr Valve Is Disconnected And I Am...