What kind of air pump does GMC Envoy use?
Air Pumps available for the following GMC Envoy years: 2009, 2008, 2007, 2006, 2005, 2004, 09, 08, 07, 06, 05, 04. This part is also sometimes called GMC Envoy Secondary Air Injection Pump.
How does the secondary air injection pump work?
The secondary air injection (AIR) system aids in the reduction of hydrocarbon emissions during a cold start. The system forces fresh filtered air into the exhaust stream in order to accelerate the catalyst operation. The secondary AIR injection pump provides filtered air on demand to the AIR solenoid check valve assembly.
Where are the relays on an air injection pump?
There are 2 relays. The one they gave you is on the pump. The other is in the fuse block. You need a scan tool to check all this. You need to command the system on to verify the pump and solenoid are working. The secondary air injection (AIR) system aids in the reduction of hydrocarbon emissions during a cold start.
What happens when the air injection pump is not working?
But in situations when the secondary air injection pump is not working, you can expect the RPM to drop. This may cause the car to vibrate or even stall as noted above. If you’ve already experienced engine stalling, poor acceleration, and a check engine warning light, then you need to have the secondary air injection pump checked out immediately.
Air Pumps available for the following GMC Envoy years: 2009, 2008, 2007, 2006, 2005, 2004, 09, 08, 07, 06, 05, 04. This part is also sometimes called GMC Envoy Secondary Air Injection Pump.
The secondary air injection (AIR) system aids in the reduction of hydrocarbon emissions during a cold start. The system forces fresh filtered air into the exhaust stream in order to accelerate the catalyst operation. The secondary AIR injection pump provides filtered air on demand to the AIR solenoid check valve assembly.
But in situations when the secondary air injection pump is not working, you can expect the RPM to drop. This may cause the car to vibrate or even stall as noted above. If you’ve already experienced engine stalling, poor acceleration, and a check engine warning light, then you need to have the secondary air injection pump checked out immediately.
There are 2 relays. The one they gave you is on the pump. The other is in the fuse block. You need a scan tool to check all this. You need to command the system on to verify the pump and solenoid are working. The secondary air injection (AIR) system aids in the reduction of hydrocarbon emissions during a cold start.