Not sure if I am allowed to ask this question but I'm stuck....here goes

Tahoe starts. Then doesn't. The garage has replaced everything but the kitchen sink.  Don't think they know what the heck the problem is.

When we go to start it we hear alot "clicking" sounds underneath the dashboard area.  They have replaced the iginition assembly, did some other stupid stuff, they say it is not the alternator, battery or starter etc. So far about $1,600 dollars worth of repairs, same problem.  Doesn't happen every day. Which makes it worse. This morning it started fine, husband shut it off, 10 minutes later went to start it and no luck. We know it's gonna have to go to the dealer.......yuk!  But I was just wondering if anyone has had this problem or might give a suggestion.  Maybe we could pass it on to our mechanic..........

We use to pull our bumper pull with the tahoe........just thought I'd throw that into the mix, in hopes you all don't tell me to go fly a horse somwhere else.

Thanks

I have seen this problem with a bad ground wire,never assume that because it looks good that it is.

The clicking is something tring to work but not quite getting it done.

I use a tester that checks battery cca and tells if it is up to the task.It also checks starter and alternator function.Great tool ! saves Me a lot of money.

I would like he said check all connections,check starter bolts,they could be loose, I would use a push button switch and check directly to the starter, if that let it engage and crank,if it did then it may be a relay bad.Or wires from relay.

Something else to think about are the battery cables or the battery itself. So, "when" this happens again, turn the headlights on. If they come on try to start and if they go off and you get the starter click it's more than likley one or both of the cables or the battery. Lots of posts about the cable connections at the battery being weak. Also you can watch the volt meter(if you have one) for the same symptoms

You need to test it on the truck when hot. Cold off the truck does not tell you much.
Check and test when hot and after a heat soak.
Make sure battery cables and grounds and battery is good.
Then see if it is getting 12 volts on small purple wire going to starter solenoid.
If so And does not start or just clicks.
The starter or solenoid or starter is bad.
A bad starter solenoid will fail hot.
May not show up on a cold test.

This may also be the relay under the hood,check manual for location.

If all else fails......trade in time.

My 01 ford diesel was doing this,turned out the starter solenoid was dirty and when I cleaned it and lubed it,that took care of the problem.

I just had a similar problem... Thought it was all sorts of dire and expensive  problems.

The battery had a terminal break inside the case.  When I went to change the battery, the terminal came off in my hand.  The battery showed fully charged, It produced full voltage.  It just couldn't deliver the full amps needed to start the engine.  Even with jumper cables !!

Gee, thanks guys..............I'm gonna print all of the posts and take them to the mechanic......................let him figure it out @ NO CHARGE!

Damn Reg, I would of loved to paid YOU the $1600.  At least it would have been fixed.................

Be careful with car batteries.  When something gets loose inside they can short and explode. I have seen it happen before. Make sure to reuse the protective cover if you have one. This normally helps keep it from coming back in your face.  Battery acid and eyes don't mix.