Get solution for this online at www.reliable-store.comand get complete guide on whether to repair or not, service it, and how to repair etc
SOURCE: Vaccum hose diagram for 97 chevy tahoe 5.7 liter
I have the diagram you need. If you send me your email I will scan it off and send it to you. [email protected]
SOURCE: Failed inspection.Secondary air injection
Water usually gets into the pump causing it to fail and sometime blowing the fuse. When you first start the engine you should be able to hear a high pitch whine from the air pump. Without a scan tool testing is a little harder. Try unplugging the pump and looping a test light to both sides of the connector to see if the light turns on when the engine is started. If it does turn on the electrical part of the system is good, so replace the pump. If it don't turn on the fuse may be bad. The fuse is the hard part. It's under the battery tray on the radiator core support. Should be a 30 amp maxi-fuse. When you replace the pump use a 5/8 hose about 4ft long and a air filter pcv filter to move the inlet air tube up by the coolant reservoir.
Testimonial: "Tracked down the fuse &replaced.Pumping good.SES light still on.Thanks so much for your expertise."
SOURCE: secondary air injection system
This is a pump that sits underneath your front bumper on the passenger
side. It is about the size of a baseball and has two hoses going into
it. I would suggest you replace it yourself as it would cost you about
$360.00 if you were to go through the dealer.
Water intrusion is what will typically kill these electric pumps. There
is a Technical service bulletin (#04-06-04-015) Regarding this problem,
according to the tsb, you will need a new pump and there is a hose
assy. #12590627) that has you reroute the pump from future water
intrusion or it is guaranteed to fail again.
Although I have had water in the pump I did not see any indication of
the inlet hose as the cause. It was suggested that the one way metal
check valves ($15.00) that mount to the rt & lt exhaust manifold
are worn and allow water from the exhaust to get sucked back into the
pump. I first replaced the pump and within a week of dry weather
driving the light came back on. I checked the pump and it was again
full of water. I just replaced the valves which had deteriorated on the
inside. So hopefully this will eliminate the problem. Note - The valves
are impossible to remove without removing the 1/2 tubes (held on with 2
nuts) they are attached to the manifold with. The valve threads seize
to the tube thread and had to be clamped in a vise to remove - I
actually had to hacksaw the valve section to get it off the pipe.
Careful as not to damage the threads.
Good luck and try autopartsdirect2you for a new pump and it has life time warranty.
TSB #04-06-04-015 - (Mar 22, 2004)
Condition
Some owners may comment on the check engine light being illuminated.
Upon investigation, the technician may find a DTC P0410 indicating that
there is a concern in the secondary air injection system.
Cause
Water may have collected in the AIR pump or the vent solenoid and frozen or corroded the pump.
Correction
Replace the AIR pump and install a new inlet hose and solenoid tube assembly using the following procedure:
Prep vehicle.
Raise vehicle on hoist.
Remove shield covering AIR pump.
Remove hose and vacuum lines from pump and solenoid.
Remove AIR pump inlet hose. Do not re-use.
Disconnect electrical connectors from pump and solenoid.
Remove pump mounting bolts and pump.
Transfer isolators from the old pump to the new pump.
Install new AIR pump and bolts to vehicle.
Tighten
Tighten the bolts to 17N·m (12.5 lb ft)
Route new hose assembly up between engine and fender. It should come up
near the area between the battery and the coolant bottle.
Connect new inlet hose to pump inlet.
Connect old outlet hose to pump outlet.
Connect electrical connector to pump.
Connect electrical connector for solenoid to connector on the new hose assembly.
Connect the hose with the white nipple to the vacuum source hose.
Connect the remaining hose to the shut off valve.
Install shield covering AIR pump.
Lower vehicle.
Remove coolant reservoir nut nearest the battery.
Route new hose assembly between the battery and the coolant reservoir with the solenoid on top.
Install the solenoid bracket onto the coolant reservoir stud and reinstall the nut back into the vehicle.
Use a wire tie to keep the new hose assembly away from the engine. On
four cylinder engines, tie to the AIR outlet hose. On six cylinder
engines, tie to an available hole in the radiator fan shroud.
12590627 Hose Assembly - Secondary Air Injection
12568324 Pump, Secondary Air Injection for 2001 L35 + 2000-2003 L43/LN2
12560095 Pump, Secondary Air Injection for 1999-2000 L35
Hope that helps
SOURCE: Code P0410- Secondary Air Injection Malfunction
The air injection reaction system (AIR) is on all 2004+ 4.2's. There is an electric blower under the truck, tucked inside the frame rail about under the drivers seat. The blower draws it's clean air from a hose tied into the air inlet tube between the airfilter box and Throttle body, pressurizes it slightly and blows this clean air into a port in the cylinder head directly above the exhaust manifold, dead center. There is a can shaped check valve bolted to this port with the air hose clamped to it and an electrical connection. The most common failure point of this system is this check valve. Remove the hose, the electrical connection and 2 bolts and it's off. Very easy. Problem is, it's about a $125 dealer only item.:banghead: The check valve gets corroded/cruded up and doesnt seat. Let it go long enough and moisture from the exhaust can back flow into the system and destroy the $$$ electric air blower. I'd start by removing and checking the valve and check the hoses for water.
Inspect the air pump and wire harness under the Trailblazer's frame rail, since you did mentioned that your had your transmission serviced and they would have had to work under there to remove the transmission pan to replace the transmission fluid and filter. There are 2 fuses you need to check also. AIR fuse 60amp....AIR solenoid fuse 15amp.
Good luck and thank you for using Fixya
SOURCE: what heater core hose goes in what hook up
Should not make any difference as long as the hoses are the same inside diameter. one hose is input and the other is output. Should not make any difference which way the water flows thru the heater core.
2,424 views
Usually answered in minutes!
×