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2005 GMC Truck engine surges

Tiny
RANDY BOVY
  • MEMBER
  • 2005 GMC TRUCK
  • V8
  • AWD
  • AUTOMATIC
  • 53,000 MILES
Our GMC Denali is surging when cold going up the hill on our driveway. When warm it seams to quit.
History
Just had a transmission put in by Chev about two months ago with the same problem.
Monday, June 14th, 2010 AT 2:05 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You sure the tranny is not slipping? If not do below

Inspect and test all the following listed below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking, fuel filter or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.
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Monday, June 14th, 2010 AT 8:00 AM

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