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What makes you think it's running too lean? Are you getting a code? Try cleaning the MAF sensor with some MAF sensor safe spray cleaner. A lot of times this fixes it. It could also be a bad O2 sensor. If cleaning the MAF doesn't fix it, there is another problem GM has with those engines. I don't know what year they started using the plastic intake manifold, but if yours has this, then I'd bet you have a bad intake manifold gasket. GM used CHEAP gaskets. Felpro makes an excellent replacement. Take some of the MAF sensor cleaner you picked up and spray it where the intake meets the heads. Any change in engine idle would indicate a leak. I just fixed this on my friend's 2004. On the plus side, it's fairly easy to fix. Took me about an hour from start to finish. On my friend's Yukon it showed a lean condition in the codes and this ended up being the problem.
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∙ 13y ago
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Max rim size for 99 Chevy Tahoe?
my boy has 26s on his 98 Tahoe and they scrub a little bit when turning, hes running 305 20 26s. i just sold my 99 suburban with 24s and there was no rub and the tires were 305 35 24.
What does code p0171 for on a 99 Windstar?
Trouble code P0171 means:System too lean (Bank 1)
How much freon does a 99 Tahoe with rear ac hold?
How much freon does 99 Tahoe with rear ac hold
Can you install a carborator on a 99 Chevy Tahoe will there be a problem from the wiring or computer?
NO you can not, won't work, engine won't run.
What should the idle be set for a 1999 Chevy Tahoe?
idle speed for a 99 Tahoe
How much is a thermostat on a 99 Tahoe?
About $ 10.00
Will 96 two door Tahoe door interchange with 99 four door Tahoe?
yes
Where is the vss for a 99 Tahoe?
if 4x4 its on the transfer case
If the check engine light is on and running lean whats wrong on the 99 expedition?
Go to Auto Zone they will pull codes for you for FREE. It may be the O2 Sensor
Is there going to be a recall on 1999 Chevy Tahoe steering shafts?
There are currently no recalls for the 99 Chevy Tahoe.
Will a 1999 Chevy Tahoe 4x4 transmission fit into a 2003 Tahoe?
IT will if the 99 is the NEW body design if not then the 99 transmission will not even begin to bolt up to the 2003 engine.
Will a 4l60e transmission from a 97 Chevy Tahoe fit a 99 Tahoe?
No it will not. The 96 and 97 transmission bellhousings are different.
