My 2003 chevrolet suburban will not accelerate past 40

Asked by Oct 30, 2015 at 02:37 AM about the 2003 Chevrolet Suburban 1500 4WD

Question type: Maintenance & Repair

4 Answers

795

throttle position sensor or throttle body is dirty or damaged.

1 of 1 people found this helpful.
73,775

Other causes may be fuel pressure or a plugged catalytic converter.

1 of 1 people found this helpful.
52,085

As Rowefast said plugged converter..... or plugged fuel filter, collapsed exhaust pipe, plugged or restricted muffler or weak fuel pump are all possible causes.

23,215

My money's on the Cat- all in!

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