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My 2008 GrandPrix GXP

B

Bobbie Graves

New member
Ive been having issues after my oil and air filer were changed last month..Found my oil filter was out a little but my car is still saying reduced engine power..It surges then bogs down..I had someone run a code on it and it said Throttle position censor a and b..Can someone help??? I would like to fix this on my own and prove to my hubs I can.
 


From the little info you gave me, it sounds like either the pedal postion sensor or the throttle body itself is bad. Your GXP being a drive by wire car instead of by a cable uses 2 sensor to figure out how far you are pushing down the pedal thus telling the Throttle body to open a certain amount.

Without the code number its had to say if its the PPS or the throttle body.
 
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