How come my engine doesn't have the secondary air pump like my hayes book describes?

How come my engine doesn't have the secondary air pump like my hayes book describes? 1 Answer

Did not pass smog OBD faield secondary air system on my 20011500 truck chevy they said computer has not rest how many miles do i need to drive before it resets they said it would pass. Once the computer reset it was serviced 1 Answer

Did not pass smog OBD faield secondary air system on my 2001 1500 truck chevy they said computer has not rest how many miles do i need to drive before it resets they said it would pass. Once the com...

My truck was flash flooded, when I hook up the battery the headlights come on automatically with no ignition on. 1 Answer

I have been through the list of trying to repair my 2005 silver ado 4.3. Done everything I can think of from replacing fluids, checking fuses, When I hook up the battery my headlights come on automa...

i replaced my throttle positioning sensor. i may have to change the pressure sensor on my fuel tank. my service engine light is on and my truck stalls as if it is not getting any fuel.how do i bypass 4 Answers

tps replaced..if i start my truck and the service engine light is on my truck will stall out. if the service light is off the truck is fine. i know it is a sensor but how can i bypass it...if i keep ...

Fan for air conditioner doesn't always come on, why? 3 Answers

Some times it will blow and then sometimes I can have fan on high and it will not blow. If I stop and restart the engine then sometimes it will blow.