yes a pedal sensor assembly for adjustable pedal is different than non adjustable, but the actual module should be the same but the module may not be offered separate. In either case the throttle body is the same.
I'm not sure exactly what you're saying there, but to make it clear for anyone coming here in the future, if you want to replace the sensor on the throttle pedal, there is a different one for fixed pedals and adjustable pedals. You can buy just the sensor. The fixed pedal assembly is fairly easy to work with if you are replacing the entire pedal assembly. The adjustable one is not, but you will have a hard time finding a pedal assembly.
In either case, it's easier to replace just the sensor.
When we got our first codes, I did the pedal sensor. It went to limp mode again, but only with the "A/B Correlation" code, P2135 Throttle/Pedal Position Sensor Switch A/B voltage Correlation.
When you search the code, you find that it is for the throttle body. The best video I found was a mechanic who said, "When you get that code, it is always the throttle body sensor," and then he shows how to remove the throttle body, clean it, and replace the sensor on it. Another video did exactly the same thing.
For $90, for an entire new throttle body, I'm doing the whole thing. Easy off and easy on, hopefully.
More to the point, we should not be having this conversation at all; this inappropriate use of technology is extremely dangerous and unnecessary. If a Corvair was unsafe at any speed, how about vehicles that shut down without warning in the middle of rush hour or bumper-to-bumper Interstate traffic?
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But, then again, when you have to remove the grill in order to remove a headlight in order to replace a DRL, what do you expect? That's why you see so many GM products with just one, or neither, DRL lit.