Part Description: 2003 GMC Sierra 3500 Intake Manifold Gasket Set
More Info
Vehicle Fitment
2003 GMC Sierra 3500 | All Trims | 8 Cyl 6.0L
$45.57
FAQ for Intake Manifold Gasket Repair
Q: What is the cause of the intake air plenum gasket?
A:
The L59 engine is calibrated for ethanol fuel (E85). Due to the low volatility of ethanol, the PCM provides higher fuel flow through the injector, which may pool on the upper manifold to the head gasket material. Over time (usually 12 months and longer), the gasket material may degrade resulting in an unmetered air leak.
By Bob
GM Specialist
01/11/2022
Q: What should I pay attention to about the intake air plenum gasket?
A:
Do not replace the upper intake manifold gaskets with the original orange gasket material, P/N 17113557.
By Bob
GM Specialist
01/11/2022
FAQ for Other Repair Info
Q: What is the service and removal procedure for the throttle body?
A:
The procedure is to remove the air cleaner intake duct, inspect the Throttle Body bore and the throttle plate for deposits, and clean the throttle body bore and the throttle plate, and the air cleaner intake duct.
Q: What is the air filter element removal procedure?
A:
Remove the air cleaner outlet duct. Next, disconnect the mass air flow/intake air temperature (MAF/IAT) sensor electrical connector and loosen the air cleaner housing top screws. Then remove the air cleaner housing cover and the Air Filter element.
Q: What is the installation procedure for the manifold pressure/vacuum sensor?
A:
You can install the MAP Sensor, connect the MAP sensor electrical connector, and install the engine sight shield.