i have a 2003 gmc sierra 1500 2wd 4.8 and im having trouble with shifting. Its an automatic 4speed. i can not get it to shift into 3rd gear. It goes into 1st and 2nd gear but wont go into 3rd gear. I will put it into driveand when it gets to 3rd gear it goes into nuetral. sometimes i can get it to catch 3rd then it goes into 4th fine. please help
i had it scaned and the two codes that came up are;
P0220 TP OR APP SENSOR 2 CIRCUIT PROBLEM
P0120 TP OR APP SENSOR 1 CIRCUIT PROBLEM
i had it scaned and the two codes that came up are;
P0220 TP OR APP SENSOR 2 CIRCUIT PROBLEM
P0120 TP OR APP SENSOR 1 CIRCUIT PROBLEM
May 12, 2006 at 5:31 PM