[froglore5]

Hello all
I have a 2009 Acadia slt with the 3.6 with 160k I try to do my own work but this thing has a mind of it's own long story short a few months back i started having trouble with it intermittently not starting had the battery tested it was on its last leg replaced it still same problem tested alternator replaced it still had the problem replace the starter seemed to help for a bit but the problem came back I can get it to start every day for a week and then it wont I am into this thing for around a grand now and pulling my hair out really need some help

 

[rbarrios]

Just to rule it out.
Find the CRNK relay.
Find the rear defroster relay.
They should be the same number.
Swap them.
See if the starting is fixed.
When the relay goes bad it may not crank at all or starter may click but not turn.
Or click, the pause then crank.

 

[froglore5]

I did that as well didnt change anything
sorry should have posted that too

 

[rbarrios]

Sorry it did not help.
That was something that corrected my click no start.

 

[divotdug]

When it fails to start, does it crank and not start or does it not even crank?

 

[froglore5]

It just wont crank no click no nothing

 

[1990 GMC 454]

Ignition switch going bad?

 

[jmarkrob]

Find the wiring connector under the vehicle under the driver's seat. Make sure it is fully seated and that you don't see any damage. It pushes upward towards the bottom of the vehicle to connect, and others have posted about it working its way slightly loose over time. It definitely helped when our 08 was doing similar things.

 

[froglore5]

Thank you Jmarkrob I will look I to this

Ignition switch going bad?

From what I have read that is a possibility for the issues I'm looking into it

 

[froglore5]

Find the wiring connector under the vehicle under the driver's seat. Make sure it is fully seated and that you don't see any damage. It pushes upward towards the bottom of the vehicle to connect, and others have posted about it working its way slightly loose over time. It definitely helped when our 08 was doing similar things.

Thank you jmarkrob I will look into it and post what I find