Help the engine control module read intake pressure accurately with the Standard Ignition Barometric Pressure Sensor / Manifold Absolute Pressure Sensor (MPN AS11). This part is listed under both names, and it installs as a direct-fit replacement for a wide range of GM cars and trucks — including the Buick Regal, Cadillac DeVille, Chevrolet Monte Carlo, Oldsmobile Cutlass Supreme, and Pontiac Grand Prix — spanning 49 applications from the 1976 Pontiac Ventura through the 1991-1999 GMC P3500. See the Buyer's Guide tab for the full vehicle list.
Signs the pressure sensor may need replacing include a rough idle, hesitation, or a check engine light. These symptoms can have other causes, so diagnose the fault first; if a failed pressure sensor is the cause, this replaces it.
Manufacturer part number AS11.
What does this sensor do?
It reports manifold absolute and barometric pressure to the engine control module, which uses the signal to gauge air density and engine load and adjust fuel delivery and ignition timing.
Is this a MAP sensor or a barometric pressure sensor?
It is listed under both names — Barometric Pressure Sensor and Manifold Absolute Pressure Sensor — under part number AS11.
Will this fit my vehicle?
It is a direct-fit replacement across 49 GM applications, from the 1976 Pontiac Ventura to the 1991-1999 GMC P3500. Check the Buyer's Guide tab to confirm your exact year, make, and model.
What are signs this sensor may be failing?
A rough idle, hesitation, or an illuminated check engine light can point to a pressure-sensor fault. Because these signs have other possible causes, diagnose the issue before replacing.
Does it install in the original location?
Yes, it is a direct-fit replacement that installs in place of the original sensor on the listed applications.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
