GMC Yukon Engine

Hello, I Have A Gmc 1999 Denali With 170k. Unsure Of The Previous Maintenance Although Was Told Its Was Done Pretty Religiously. The Car...

My 1999 Gmc Yukon Is Vapor Lock, What Is Going On?

Where Is -o2 Sensor Heater Circuit Malfunction (bank 2, Sensor 2)

My 99 Yukon Is Idling Rough About 500 Rpm? I Think Is Not Timed Right

99 Yukon, Runs Great,but Misfires When At Low Throttle Settings At Hiway Speeds. No Codes, Recent Major Tune Up. 170,000 Miles.

1999 Gmc Yukon I Was In 4-wheel Drive And When I Got Back Into The Truck My 4-wheel Drive Quit. Where Can I Find An Actuator For It And The...

Engine Mechanical Problem 1999 Gmc Yukon V8 Four Wheel Drive Automatic 107k Miles A Few Weeks Ago I Had My Truck Tuned Up And A Few...

I Bought This Truck Three Weeks Ago And Everything Seemed Fine, Till Yesterday. I Found Antifreeze Under The Truck In The Moring. It Looks...

I Had A Fault Code For A Faulty O2 Sensor, Bank 2 But Didn't Verify Loc. Where Are The Two Sensors In Bank 2? I Found One Behind The...

My Daughter Was Driving Her 1999 Gmc Yukon When It Started To Idle Very High And Accelerate On Its Own. A Diagnostic Test Revealed The...