03 tahoe! Rpms rise and drop
louie vulgar
01-06-2009, 11:32 PM
my 5.3 2003 tahoe has an rpm rise and drop at 500 rpms in idle whenever there is and ac/heater load. It also has turned off on a couple of occasions but always starts right away. please help
2000CAYukon
01-07-2009, 12:01 AM
I would clean the Throttle Body first as when they get dirty they can cause a rough idle. I clean mine every 10K miles or so.
//2000CAYukon
//2000CAYukon
tahoe4x4guy
02-27-2009, 08:12 PM
It sounds like you might have to replace the throttle position senser. I had the same problem on my 2001 tahoe. If it is the TPS it will also set the engine light on.
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