GMC Sierra Engine Symptoms

Idle Oscillates From Slow To Fast And If The Throttle Is Opened A Bit It Speeds For About 30 Seconds, Then Backfires Through The Tbi And...

Installed A 350 5.7 Engine. Everything New. When Driving At Any Speed In Overdrive And Just Touching Accelerator To Maintain Speed, Will...

Okay So My Truck Is The Short Bed Step Side Single Cab. Currently Has A 350 In It And Had A Five Speed Manual. Swapped It To A Th400...

Hi, I Have A 1990 Gmc Sierra 1500 With A 350 Engine And I Decided To Do A Tune Up On It By Myself. It Ran Fine Before I Changed The Spark...

Codes 24 And 42

When The Motor Warms Up And I Reach 35-40 Mph The Truck Hesitates As If It Was Running Out Of Gas. It Only Happens In Overdrive. If I Let...

I Was Driving Home From By The Truck And I Try To Use My Cruise Control And My Truck Died And I Can't It It To Stay Runing. It Fries Over...

It Drove Just Fine Until Yesterday, It Died While Driving Down The Highway. It Has Gas And It Turns Over I Checked The Gas Filter And...

It Takes Off And Drives Fine, But While Doing Between 45 And 55 When Trying To Increase Speed It Will Spit And Sputter Like Its Not Getting...

My 1990 Gmc Sierra 4x4 Pickup Is Having Starting Problems. I Checked The Battery, It Reads 12.0 Volts. On My Tester. I Replaced The...