CAN'T CLIMB HILLS

2002 GMC Safari

Tiny

aldan

July, 17, 2011 AT 11:27 PM

2002 GMC Safari lacks power going up hills. Have to run in 3rd gear and some times in 2nd

FOUND 16215 RELATED QUESTIONS

1 Answer

Tiny

rasmataz

August, 11, 2011 AT 10:51 AM

Hesitation: Could be one of the following below -check and test: Oxygen sensors.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
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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