'99 Suburban accelerator pedal vibration

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'99 Suburban accelerator pedal vibration

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Chevrolet Forum >> Chevy Trucks, Vans & SUV's >> Suburban >> '99 Suburban accelerator pedal vibration

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'99 Suburban accelerator pedal vibration - 2/16/2008 8:55:06 PM

GolfClapperX

Posts: 2
Joined: 2/16/2008
Status: offline

This is a 1999 1500 4X4 Suburban with 140K miles. Starting at about 135K miles, it started having an intermitant vibration in the accelerator pedal. It's a rapid vibration, similar to that of a cell phone vibrator. Nothing accept the pedal seems to vibrate or make any noise. The most vibration is while just enough pressure is being applied to the pedal to maintain about 40MPH. It hasn't been taken to any shops, but the shops around here are rednecks who wouldn't think it's worth caring about. Any suggestions?

_____________________________

2000 Chevy Blazer LT 4X4
1971 Chevy Nova
1972 Chevy Nova SS
1975 Toyota Celica GT 5 Speed

Post #: 1

RE: '99 Suburban accelerator pedal vibration - 2/18/2008 9:28:17 AM

ZX1100F1

Posts: 2429
Joined: 8/1/2006
Status: offline

The 99 Suburban uses a cable that is attached to the throttle body on the engine, so if you are feeling a vibration through the gas pedal then the engine is transmitting it.
The vibration may be the engine or it could be some other part of the drivetrain that is transmitting the vibration into the attached transmission and up.

Check the obvious first and make sure that all the tires are balanced properly, this is inexpensive and may prevent you from chasing your tail in the end.
I would also inspect the throttle body and throttle cable and make sure that everything looks correct.

You could also have a slight misfire, are your plugs and wires in good shape?

(in reply to GolfClapperX)

Post #: 2

RE: '99 Suburban accelerator pedal vibration - 2/19/2008 9:21:58 PM

GolfClapperX

Posts: 2
Joined: 2/16/2008
Status: offline

Yeah, the plugs are fine. I frequently do tune ups and such. But like I said, the vibration is strictly in the gas pedal. The vehicle rides perfectly smooth, even at 80MPH and higher. The throttle cable is a good thought. I don't see anything wrong with it but I may be missing something. Thing is, it's only that one pedal vibrating, and intermitantly. Only when maintaining that suddle 1200 RPM pressure to keep it going about 40 MPH. It is my Grandmother's vehicle but I'm the one who pretty much maintains it. I may just convince a mechanic to give an opinion without charging for it.

Thanks for the input,
Brian

_____________________________

2000 Chevy Blazer LT 4X4
1971 Chevy Nova
1972 Chevy Nova SS
1975 Toyota Celica GT 5 Speed

(in reply to ZX1100F1)

Post #: 3