Need a wave form cam and crank correlation

Gerardo Owner Illinois Posted   Latest   Edited  
2016 Chevrolet Malibu L 1.5L (T LFV) 6-spd (6T40)
P0014 — "B" Camshaft Position - Timing Over-Advanced or System Performance Bank 1
P0017 — Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor B
Came In With No Start Some Times Starts Found A Booster Vacuum Pump Frozen

Please need a wave form cam and crank correlation.

Ray Diagnostician
Ray Default

2018 Malibu 1.5 good cmp, ckp

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Caleb Diagnostician
Caleb Default

Just an FYI. The vaccum pumps seize up on that engine because the pistons are very sloppy in the bore and burn a lot of oil. Probably has no oil in and thats why you have the timing codes. The VVT screens probably have metal in them as well. The vaccum pump is the last in the oil lube circuit and they always seize up. I would not waste to much time. The piston rings seize in the lands, then the…

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Gerardo Owner
Gerardo Default


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Scott Manager
Scott Default

Hi Gerardo, Hope all is well. Not sure if you tried searching here but here’s what I found and how.

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Martin Diagnostician
Martin Default

There's a bulletin regarding the vacuum pump breaking off and the reluctor on the cam slipping. The bulletin has a very clear inspection procedure. I don't know the number, sorry.

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