every morning when i start my truck the wheel that keeps the tension
on the serpentine belt squeals until it warms up(5 minutes). heres
another one-- every once in a while i will turn off the truck run in a
store for a few minutes and then it wont start--with all the doors
shut i get a "security" message--i also notice that i dont hear the
fuel pump running. I have tried wiggling and removing the plugs to the
sending unit on top of the gas tank.
1. Either the belt itself needs to be replaced, the tensioner pulley needs
to be replaced, or the idler pulley needs to be replaced. All are easy,
straight-forward things to do and can be done at the same time with limited
2. It's most likely not the connections on the fuel pump, but something ECM
related. If the ECM senses a security issue then it won't activate the fuel
pump so I'd stop fooling with it. Try using a different remote to unlock
the doors and/or a different key to start the truck. Beyond that you will
have to have the computer scanned to see what is giving you the security
Cheers - Jonathan
Replace the belts if they are more than a year old. I was ready to replace
the idler pulley but tried the belts first. It cured the problem
completely. I also changed the short belt on the ac compressor. Neither belt
looked bad but they obviously were.
My 200 Silverado 1500 would leave the security light on even after the truck
started. It would only do it occasionally. I finally had it happen at the
dealership and they replaced the ignition switch in the steering column and
the problem never happened again. It was a good truck and wish I still had
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