Chevy Avalanche won't start

Looks like the low pressure switch gets power from a 10amp ac fuse. Power then goes to the ac relay which is powered on by the ac heat controller on the dash. Power then goes thru the high pressure switch to the compressor. The ac relay is grounded to the body. Do you have power on the lite and dark green wires going into the relay and is it grounded ?

CHECK BATTERY CONNECTIONS, STARTER CONNECTIONS, WHAT DO YOU DO WHEN IT DOESN'T START, TO GET IT GOING AGAIN, DO YOU GET A JUMP START IF SO CHECK CONNECTIONS.

You blew more than 1 .

The HUGE MAXI FUSE is probably burned... IF I remember correctly, it is a 80 or 100 Amp

Check fuel pump relay under hood and fuse.If they are good it is going to be the fuel pump.

this control is controlled by the computer. make sure your a/c relay is good along with fuses. check the high pressure switch connection on back of compressor it may need to be put on a tech 2

what exactly is the question ?

did u disconnect he ground on the battery,berfore changing th swicth, ther are two fuses / relay . one under dash and one under hood. if ther good ther is a back up fuse to comp. 7.5 read cover to be sure . take out for 10 min. replace and see if it helpes if not u may hav melted wires somewere. solenoid to to starter. good luk claymister

The ignition start circuit is the path from the ignition key in cranking mode to the solenoid on the starter. The path travels through a starter relay and a neutral safety switch before it reaches the starter.
This must be the circuit not working on your car.Make sure battery and starter connections are tight.Check for power at the starter solenoid terminal with a testlight when someone turns key to crank. If you have power there, they sold you a defective starter. If you have no power there then it could be the relay or the neutral safety switch.

Their is a relay/ fuse box under the hood thir is a relay that is probbly sticking corrison on the contacts inside is a commen problem remove the relay and try switching it with a twin relay that controls somethig else in the box and see if it shuts off the fan if so replace the relay avalible at most auto part stores.

another person wrote this, I was trying to find more info for you.

I'm answering my own post so other's may reference. The problem was my Powertrain Control Moudle (PCM) kept blowing out due to a bad fuel pump.

so if you are inclined to check, your fuel pump can still work and not work correctly. So this needs to be tested under correct measures. More than likely on the truck. But I would locate the PCM and check to see if its blown.

If I find anything else I will forward it to you.

tepfy