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MSU120 · 08-30-2021, 09:01 PM

I recently had a cam/heads build completed. The engine was pulled to complete the project. Everything was good for about 2 months when out of no where, my tech stated bouncing erratically. Car ran fine and continues to run fine but now the tack bounces non stop. I also have the following codes:

U0126
U0136
U0151
U1833

The shop checked the 3 grounds on the engine and said all appeared good. I believe this is a ground issue but I have no idea where. Does anyone have any suggestions? Is there a particular ground location or harness that would affect the modules related to those codes?

08-30-2021, 09:01 PM	#1
MSU120 Drives: 2018 1SS 1LE Join Date: Jul 2012 Location: Michigan Posts: 287	Need help…..RESOLVED I recently had a cam/heads build completed. The engine was pulled to complete the project. Everything was good for about 2 months when out of no where, my tech stated bouncing erratically. Car ran fine and continues to run fine but now the tack bounces non stop. I also have the following codes: U0126 U0136 U0151 U1833 The shop checked the 3 grounds on the engine and said all appeared good. I believe this is a ground issue but I have no idea where. Does anyone have any suggestions? Is there a particular ground location or harness that would affect the modules related to those codes? __________________ 2018 SS 1LE—707rwhp, 615rwtq 2009 Pontiac G8 GT—605rwhp, SOLD Last edited by MSU120; 10-01-2021 at 04:03 PM.