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1998 GMC C2500 Suburban 7.4L Moniters
Posted to GM Driveability on 1/28/2026 7 Replies

98 n454 Suburban, aftermarket supercharger, Nitrous Cal Carb compliant. vehicle originally came in with MIL on and a P0410 AIR fault/. Traced system, found clutch on AIR pump defective. Procured a "reman" unit and installed. All good at that time. Vehicle ...

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car Vehicle Data

1998 GMC C2500 Suburban

VIN 3GKGC26J9W
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / PORT
EmissionsOBD-II Compliant
SymptomsMoniters
OccursAlways

Trouble Codes

P0416Secondary Air Switching Valve 'B' Circuit Open
Open Help Request

car Vehicle Data

1998 GMC C2500 Suburban

VIN 3GKGC26J9W
Engine7.4 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / PORT
EmissionsOBD-II Compliant
SymptomsMoniters
OccursAlways

Trouble Codes

P0416Secondary Air Switching Valve 'B' Circuit Open