Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPONTIAC2008GRAND PRIX V6-3.8LREPAIR AND DIAGNOSISDIAGRAMSCONNECTOR VIEWSCOMPONENT CONNECTOR END VIEWSPOWERTRAIN MANAGEMENT
2008 Pontiac Grand Prix V6-3.8L
Powertrain Management
2008 Pontiac Grand Prix V6-3.8LSECTION Powertrain Management
Accelerator Pedal Position (APP) Sensor (L26 - 3.8L)
Accelerator Pedal Position (APP) Sensor (L26 - 3.8L)
Body Control Module (BCM) X1
Body Control Module (BCM) X2
Body Control Module (BCM) X3
Data Link Connector (DLC) (L26 - 3.8L)
Engine Control Module (ECM) X1 (LS4 - 5.3L)
Fuel Pump and Sender Assembly
Fuel Tank Pressure (FTP) Sensor
Heated Oxygen Sensor (HO2S) Sensor 1 (L26 - 3.8L)
Heated Oxygen Sensor (HO2S) Sensor 2 (L26 - 3.8L)
Knock Sensor (KS) Bank 1 (L26 - 3.8L)
Knock Sensor (KS) Bank 2 (L26 - 3.8L)
Manifold Absolute Pressure (MAP) Sensor (L26 - 3.8L)
Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor (L26 - 3.8L)
Powertrain Control Module (PCM) X1 (L26 - 3.8L)
Powertrain Control Module (PCM) X2 (L26 - 3.8L)
Powertrain Control Module (PCM) X3 (L26 - 3.8L)
Secondary Air Injection (AIR) Control Solenoid Valve/Pressure Sensor Bank 2 (L26 - 3.8L+NU6)
Secondary Air Injection (AIR) Pump (L26 - 3.8L+NU6)
Secondary Air Injection (AIR) Pump Relay (L26 - 3.8L+NU6)
Secondary Air Injection (AIR) Valve Relay (L26 - 3.8L+NU6)
Throttle Actuator Control (TAC) Module (L26 - 3.8L)
Vehicle Communication Interface Module (VCIM) - X1 (UE1)
Vehicle Communication Interface Module (VCIM) - X2 (UE1)
Vehicle Communication Interface Module (VCIM) - X3 (UE1 +US4)
Vehicle Speed Sensor (VSS)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.