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i have a 2003 gmc sierra 1500 2wd 4.8 and im having trouble ...

Sent to Car Experts May 04 08:38 PM

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

 

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2003 GMC sierra 1500 2wd 4.8

Customer (name blocked for privacy)
Status:  Closed   Value: $15
Info Request
May 4 8:48 PM (10 minutes and 36 seconds later)
         
REPLIED to Info RequestCheck Mark
Is the check engine light on?If it isn't I would still go to an autozone and have them read the codes for free.Then come back and give me the numbers and I will try to help.

Master ASE Certified.L1 Advanced Engine Performance Certified.Pa Emission Repair Technician.Just Answer Car Category Mentor.
Davo -- Master technician -- 99% Positive Feedback on 1944 Car Accepts
ASE Master Technician/Advanced Automotive Diagnostic Technician
Reply
May 4 9:16 PM (27 minutes and 31 seconds later)
         
Reply to Davo/diablo666's Post: i will do that asap thank you. someone mentioned the shift seloinds. what do you think? i really appriciate all your help
Customer (name blocked for privacy)
Info Request
May 5 9:33 AM (12 hours and 17 minutes and 23 seconds later)
         
After you have the codes checked we can discuss it further.There are a number of causes for your problem and the codes may lead to a clue.

Master ASE Certified.L1 Advanced Engine Performance Certified.Pa Emission Repair Technician.Just Answer Car Category Mentor.
Davo -- Master technician -- 99% Positive Feedback on 1944 Car Accepts
ASE Master Technician/Advanced Automotive Diagnostic Technician
Reply
May 6 11:36 AM (1 day and 2 hours later)
         
Relist: I still need help.
Customer (name blocked for privacy)
Info Request
May 7 9:40 AM (22 hours and 3 minutes and 34 seconds later)
         
REPLIED to Info RequestCheck Mark
Do you have any stored codes?

Master ASE Certified.L1 Advanced Engine Performance Certified.Pa Emission Repair Technician.Just Answer Car Category Mentor.
Davo -- Master technician -- 99% Positive Feedback on 1944 Car Accepts
ASE Master Technician/Advanced Automotive Diagnostic Technician
Reply
May 12 10:20 AM (5 days later)
         
Reply to Davo/diablo666's Post: 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
Customer (name blocked for privacy)
Answer
May 12 6:13 PM (7 hours and 52 minutes and 56 seconds later)
         
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Davo -- Master technician -- 99% Positive Feedback on 1944 Car Accepts
ASE Master Technician/Advanced Automotive Diagnostic Technician
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