GMC SIERRA ENGINE SYMPTOM

I Had A Leak Where The Transmission Fluid Goes Into The Cooling System. I Added Stop Leak The Leak Stopped But Now I Have A Clacking In My...

Engine Turns Over For About 10 Seconds Then Finally Starts Seems To Run Ok And Restart Ok But Won't Come Off Fast Idle Engine Is At...

The Engine Runs Hot. I Ran Low On Coolant Last Week So I Filled It Up, Now It Runs Hot All The Time. Before, It Ran Half Way Between 100...

I Have A 99 Sierra With A New Engine It Has About 17,000 Miles On It I Swaped The Engine Myself Due To A Blown Head Gasket, Before The New...

Usually Will Not Start If Less Than 50 Deg F. When I Punch It To Passing Gear It Feels Like Its Running On 2 Cylinders. Dealer Had It...

My Son Replaced His Transmission And Now The Engine Will Not Turn Over. When I Place The Ignition In The "on" Mode Before Starting It, The...

Truck Idols Good But When Accelerator Is Applied It Completely Stalls. Before Stalling It Backfires Threw The Intake The Transmission Has...

My 5.3 Sierra Won't Crank. Everything Lights Up, But Turn The Key To Start And Everything Goes Dead. No Turn Over. I Have Replaced The Park...

I Replaced Engine Which Now Runs Perfect But Transission Does Not Work. Replaced Torque Convertor And The Pump Which Still Has Not...

My Switch Turns Over, But Nothing. I Changed The Battery And Starter Also Checked All Fuses With A Meter And All Good. I'm About To Change...