Battery And Alternator Good Truck Wont Start

[jacquesje83]

I have a 2002 GMC Sierra 2500HD w/ 8.1L. Occassionaly I will got to start the truck and it acts like the battery has died. I unhook the negative cable from the battery and reconnect it to reset the computer. When I go to start it it runs fine. This is an intermittent problem occuring once a month or so. The only electrical problems other than that is the passenger window runs really slow and the mirror does not work proper. I had that checked out and they said the motors were fine. I had the battery tested its good and the altenator is new and is the biggest one for my truck.

[[email protected]]

I have a 2002 GMC Sierra 2500HD w/ 8.1L. Occassionaly I will got to start the truck and it acts like the battery has died. I unhook the negative cable from the battery and reconnect it to reset the computer. When I go to start it it runs fine. This is an intermittent problem occuring once a month or so. The only electrical problems other than that is the passenger window runs really slow and the mirror does not work proper. I had that checked out and they said the motors were fine. I had the battery tested its good and the altenator is new and is the biggest one for my truck.

So you're saying you get in it and turn the key on and nothing lights up or just that the starter doesn't engage or respond when you crank it?

[jacquesje83]

The battery acts like it works with the key in the ignition, the radio turns on and the message center works, then when the key is turn to start the truck it dies. you hear a little bit of clicking.

[Zembonez]

Sounds like a bad ground cable to me.

[[email protected]]

The battery acts like it works with the key in the ignition, the radio turns on and the message center works, then when the key is turn to start the truck it dies. you hear a little bit of clicking.

 

It has got to be a bad battery connection or terminal that only loses contact intermittently.