1999 GMC Sierra "99 suburban runs roughly" Questions

...99 GMC Suburban I replaced the plugs,distribator cap,and roter button, and it is still running rough and now it gets a back fire when put into gear. I read codes says O2 sensor heater circuit ...

...99' suburban where is it? Hello, You have an emission sytem problem . The actual sensor is on top of the fuel tank that lets the system know how much air pressure is on the system, its made in the ...

99 suburban runs rough throughout driving range little bit of backfire wants to die but rumbles on. Any Service Engine light? If so, the first thing that should be done is to get whatever codes are ...

99 Suburban misses and hesitates on accelleration Our 1999 Chev Suburban just started to run rough and hesitate when accellerating from a stop. The "check engine soon" light came on. when we let off ...

...99 Suburban that did almost the same thing, it turned out to be the Catyletic Converters were plugged. Try taking the exhaust pipe loose at the manifold for test purposes. If it runs good with the ...

99 suburban starts but doesnt stay running starts, runs rough as hell, then dies. changed fuel pump, injectors, 02 sensors, fuel filters, plugs, wires, distributor, and retimed engine. engine is timed

...99 Chevy Suburban, it turned out to be the catylatic converts were plugged. Disconnect the exhaust ahead of the "cat" to see if it runs better, just take the pipe(s) loose. Or remove the O2 sensor(s) ...

99 suburban just replaced the dis cap rotor plugs wires fuel pump fuel filter fuel relay. It ran great after all this then it will start running rough and die if i let it sit for awhile it will start.

...99 Chevy Suburban 1500 it is giving me a random multiple misfire code however it seems to be running nice and smooth I've changed the cap the rotor button the plugs the wires I don't know what is ...