Question about GMC Jimmy

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Check engine light came on. Engine started running rough. Will barely pull itself. TBI 350

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  • camshan22 Jul 21, 2008

    Service engine light on, only today. sputters upon gas pedal depression at least 60% of the time, of late. problems started about a week or so ago.???

  • bordelon5 Jan 14, 2009

    How hard is it to change a oxygen sensor

  • krittal67 Jan 17, 2009

    I have had the same thing happen to my 99 Jimmy, I was first told it was the remote start....had that taken off, then they say it was fuel pump and sending unit....replaced both of them, still did not solve the problem took to another repair shop all along it was the MAF sensor not O2 sensor this fixed THAT problem....not too mention the MANY other major problems I have had with this vehicle! I would never buy another one this is nothing but a money sucking piece of ****! I have spent over 4,000 since I have owned it fixing many different problems. Just replaced the alternator and now the headlights, interior light and everything are blinking. (Any idea on this one)? So far I have replaced the water pump, fuel pump, fuel regulator, serpentine belt, AC unit, distributor, spark plugs, wires, multiple batteries, rear wind shield wiper will not work, electric seats will not work anymore (check fuses and all), Heater blows out great air on vent or defrost anything else hardly any out put. One quick note if you can't get the key out of the ignition there is a plug that you can pop off a couple of inches under the ignition and stick a pen (or similar object) in the hole to release the key. Once again never ever would buy another GM no wonder the American Auto Industry is in such disarray and going bankrupt

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This could be a major problem or a simple problem... First I'd have someone sit inside and start the car and REV the motor a little, feel the exhaust if it is extremely hot and very little coming out it may be Catalytic Converters... Could be Oxygen Sensors,
Distributor, Fouling injectors... On these newer cars it is really hard to tell, take it to a Auto Zone, Oreilly's or other car parts store, several of them will read your cars computer for free banking on the idea it's a replaceable part and you will buy from them...

Posted on Jul 16, 2008

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