SOURCE: Secondary air injection pump, 01 GMC Jimmy V6
You didn't mention the fuse rating of the one you replaced so this method may not help if it was higher than ~5 amps.At this point, I would wire a 12 volt bulb, preferably, one with 40-50 watts rating (headlamp will do fine) in place of the fuse that is blowing and start pulling likely connectors until the light goes out.
If you don't get results this way, you might try disturbing one bundle of wire after another since this could be happening because of insulation that has been pinched or worn through to reach ground.
Using a bulb instead of bridging the fuse with a piece of coathanger will prevent melting the wire and possibly compounding the problem.
SOURCE: Secondary air supply failure
I have a 2005 Envoy with a 4.2..... Just recently the check engine light illuminated so I read the code after replacing the 20amp fuse labeled cigar. My OBDII connection had no power so if you plug your reader in and nothing check the fuse under the hood labeled "cigar"
After pulling the code P0410 Secondary Air Injection Malfunction I checked the operation of the air pump by removing the hose connected to the solenoid. By the way the solenoid is located on the pass side of the engine top towards the back. After pulling the hose off the solenoid I started the vehicle when it was cold and after 20 seconds or so the pump should turn on and blow air out of the hose. Once I verified the pump was operating I pulled the solenoid then placing jumpers from the Positive & Negative of the battery to the pins on the solenoid. You should be able to hear the solenoid click which says its operating. But mine did nothing so I read across the pins with an Ohm meter and verified the coil was good.
So take some good penetrating oil and fill the inside of the valve with it. You can see the plunger shaft assy in the opening and thats the area you want to fill with a good penetrating oil!!!! Let it sit for a couple of hours keeping it full of oil. The housing is aluminum and the shaft is likely to be a brass material so rust is not possible. Its caused by a buildup of carbon!! The penetrating oil will soften the carbon which in turn will free up the plunger!! MINE WORKS GREAT NOW and plus you will save around $140.00 if you were to buy it from the dealer!!! Or $80.00 aftermarket from RockAuto.com
SOURCE: were is fuse location for secondary air pump 2001
It is in a little fuse box in the passenger fender. Just to the left of the battery looking from the grill.
SOURCE: secondary air injection pump location
under the radiator on the passenger side of the truck. There is a little splash guard you will need to remove to see it, The guard is held in with 4 15mm headed bolts, then you will be able to see the bottom of the air pump.
SOURCE: where is secondary air pump located
Its on the drivers side under the headlight. Remove one cover underneath the car in front of the Drivers side tire. Easy fix,took 1 hour to remove and replace
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