Engine Performance problem
2008 GMC Yukon V8 Two Wheel Drive Automatic
I would like to ask merlin2021 a question
My 2008 GMC Yukon has had reduced engine power 5 times. Each time they tell me it is fixed. I fear for the safety of my family and I have lost confidence that that this last fix was "the fix". The problem is intermittent and sudden. It runs fine between each fix and currently it is running fine.
What are the possible causes of reduced engine power?
So far they:
1.) Found code P2138 then found bulletin 070604019 to check body connector necessary to clean connection and repair leak from L frt sunroof drain hose
2.)Caused by possible poor connection at C200 causing code P2138 Corrected by N6608: (P2138) wiring and/or connector emissions system repair or replace perform tect II diag, code P2138 set, found bulletin 070604019 & PIP3738 3B, water test vehicle, R&R upper dash/instrument panel trim & defroster grille & inspect, secure C200, clear codes and road test
3.) Caused by 2138 stored APP Sensor 1-2 connection Corrected by N6608: (WG) (P2138) wiring and/or connector emissions system repair or replace. Preformed bulletin 07-06-04-019A and PIP 3783B, checked connectors C109, C205 No corrosion seen all terminals tight, no signs of water introsion verified all conn properly seated and locked cleared DTC.
4.)Caused by: No current DTC's stored, APP sensor data within parameters, P213B history Corrected by J6360: (PL) (11EC4) module, PCM/VCM replace. Installed 12612384: module (03670-pckt) 12612 Qty:1 Check all connectors and APP circuit, intermittent ECM malfunction, replace ECM, peformed programming. (Please note: the battery was dead when I brought it in because we left the lights on waiting for AAA to tow us to the shop. They replaced the battery before they did the other work.)
5.)Caused by: DTC 2138 APP sensor 1-2 correlation, Corrected by J5350 (WG) (P2138) pedal, accelerator replace Installed 25832864: pedal (03451-CT) diagnosred intermittent APP sensor failure, replace accelerator pedal position sensor (pedal assy) clear DTC, test drive 39 miles, no codes reset
So is there anything else that could go wrong?
Thank you for all of your time and expertise.
have the same problem?
Thursday, June 4th, 2009 AT 8:38 AM