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2005 Pontiac GTP 3800 with engine code P0068 and P0101. My question is when going down hills is when I get power loss engine light and no throttle response.

Vehicle: 2005 Pontiac GTP 3800 gen3

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Best answer
P0068 Throttle body airflow performance

P0101 MAF (mass airflow performance)

This is geniunly a MAF problem you can perform a MAF cleaning if that does not do it a replacement of the MAF will be needed
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P0068 PONTIAC - MAP/MAF - Throttle Position Correlation
Read more: https://www.autocodes.com/p0068_pontiac.html

P0101 PONTIAC - Mass Air Flow Sensor Performance
Read more: https://www.autocodes.com/p0101_pontiac.html

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