A friend of mine has a 1999 Tahoe that has an intermittent starting issue. Occasionally, when she attempts to start the truck, the engine does not crank, and there is a loud, rapid clicking sound that might be coming from the engine, but could also be coming from inside the dashboard. When this happens, the speedometer moves up, and the gear indicator flashes rapidly. The tachometer remains motionless. When I saw the problem, the truck had been idling for about 15 minutes and had cooled off a bit. My initial impression was that it was a starter/flywheel problem, but now that I think about it, it sounds more like an electronic issue. Has anybody seen this before and have any ideas?

 

Check the basics like battery connection and battery

 

It had been sitting for a while. However, it was still acting up after I put it on a battery charger. The owner says that the truck has done this before in the past.

 

had that happen to me the other day found out the battery need replaced. there enough quick charge from the ALT. to start it up but when the load is on the battery is acually bad. me i would replace the battery. thats what i did and works fine.