Question about 1999 GMC Jimmy
What kind of a dealer are you going to . If what you are saying is correct the MIL light is on then what you need to do is find out what code is making the light come on it will have a # P0 - - - the MAF or mass air flow sensor on this vehicle would be P0102 or P0103 its the first sensor and a main sensor that would create a lot of driveably problems but the code would be there . How the dealer got from the maf to replaceing the transmission and ovesely that was not the problem and now it telling you you need a new alternator is eighter criminal or complete incompants. Find out what the code is and i will tell you what is wrong with it and don't go back to that dealer you didn't need any of these parts . Any auto parts store will read these codes at no charge for you this is why the OBD 11 system is there and is standard on all vehicles with a few exceptions in the us but not your vehicle and regulated by the federial goverment . I work on vehicles and owen one a blazer my self witch is the same thing as a jimmy. And you are getting riped off pier_j
Posted on Mar 17, 2011
Hi, as we discussed on the chat, there are three possible causes in my mind. One would be a cut in the intake hose between the MAF sensor and the throttle body. This could have caused the P0101 and made the dealer change the MAF sensor. If they didn't notice a **** in the hose--voila, the problem persists. If, on the other hand, you have a new code that indicates the TPS or the MAP sensor, that indicates a totally different repair. The code will help us narrow it down to where we have a lot less work to diagnose--let's take advantage of the computer.
I will be out working tomorrow, but I will check in as often as I can.
Posted on Mar 17, 2011
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Posted on Jan 02, 2017
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