Codes P1125 and P2138 on 2004 Pontiac Grand Prix

P1125 - Throttle Position Sensor Intermittent P2138 - Accelerator Pedal Position Sensor Circuit Looks like MAP sensor ... The Manifold Absolute Pressure sensor (MAP sensor)

Don't think it is the MAP but I pulled it off to check it. Came apart as I was pulling it out. Will replace and see. Had a lot of oily residue on the inside components.

MAP replaced. Still the same codes and reduced engine power and traction control warning lights. I can clear the codes but the come right back up when I put it in reverse.

Hey jerry did u get your problem solved?

No. Any advice uxw?

I'm having the same problems. Did you ever find a solution? I changed the throttle body and accelerator pedal sensor. didn't fix the issue.

I have a 2007 Grand Prix special edition. I have been dealing with these problems for about six years. I even took it to a GM dealership and it took them two weeks to figure the problem out. they said it was a circuit or a switch and about six months later low and behold reduced engine power. It doesn't happen all the time but I'm gave up on fixing it be haze not Evan a gm dealership could get it rite. Does anyone have a solution

having the same exact problem anyone know how to fix it?

Sounds to me like the ecm

I have same problems. I think it's the evap purge selinoid. Located on top of gas tank underneath car. Letting no air flow. That's why it stalls and if u cut car off and take gas cap of crank it up and put gas cap back on it runs fine

I have replaced throttle body and pedal sensor. Still no fix. But when it stalls on me yall I do this. Cut car off, take gas cap off. Crank car up. Then put gas cap back on. It runs fine for a while. It mostly happens to me when 1/2 tank of gas or less

Everything I've ready said bad wiring

Jerry did you solve it yet? I too am in the same position. I replaced my throttle body and it went away for a year...its back.

Check ignition ground surface. My car would die I would unhook battery and hook it back up and car start up again no problems then 10min …..30min. 1hr later did it randomly do it again

So I am getting these codes as well. I replaced the pedal, throttle body\w tps, and the map sensor. When I bought the Pontiac there was a piece of the dash missing just above the aftermarket stereo. I didn’t know what went there for a while, and then I found out that my Pontiac is missing its DIC :( and I feel like that is contributing to the computers inability to accurately read the newly installed parts input. I could be wrong but I really don’t know. I also feel like the lack of a DIC is causing shorts in the empty harness which cause temporary shorts to my gauges. I also realized that my scan tool can not read my car when this short occurs. My question, do you guys think my short is in the lack of a DIC? Or somewhere else? Every once in a while my rpm, gas, and temp gauge stop working. Speedo works when they don’t tho.