20 Most Recent 1999 Chevrolet Tahoe - Page 7 Questions & Answers


The transmission neutral safety/ range selector switch is what turns on the backup lights. It's on the drivers side of the transmission. two plugs going to it. It could be this or a bad wire.

1999 Chevrolet... | Answered on Aug 13, 2014


IF your symptoms are when driving , the temp gauge acts normal rising slowly. Then all of the sudden it goes high and a second or two later it goes back to normal. Then you have low coolant in the engine. The reason this happens is because of air pockets. Air pockets are much hotter than the coolant. Check for coolant leaks...

1999 Chevrolet... | Answered on Aug 13, 2014


Sometimes if you leave the key in the "on" position for 15 minutes the security system will relearn the key and reset.

1999 Chevrolet... | Answered on Aug 13, 2014


It could be from any number of reasons. It would be a pure guess on any diagnosis without having an analysis performed by a competent technician.

Have you had any service engine light come on while driving? If so, you should have a code reader pull any code(s) from your computer. This will often point to the cause of the problem.

1999 Chevrolet... | Answered on Aug 07, 2014


Slow or no Engagement of Front Axle when 4WD is selected (Replace Front Axle Actuator) Inspect the Electrical connector from the indicator switch located on the upper right side of the differential.

Replacing the actuator itself is a pretty simple job.
Remove the connector.
Unscrew the actuator.
Put some goo(thread sealer) on the threads of the new actuator if it doesn't already have it.
Screw in the actuator.
Plug in connector.

Replacing the transfer case switch will take more time.

Good luck and keep me posted. Glad to help you get your Tahoe running 100% again soon and thank you for using Fixya.

1999 Chevrolet... | Answered on Aug 04, 2014


Follow the exhaust pipe back from the engine. Somewhere along the way you'll find a device attached to the exhaust pipe with wires coming out of it & connecting to the wiring harness. That'd be an oxygen sensor. Find two - the rearmost one will be the one you're looking for..

1999 Chevrolet... | Answered on Aug 02, 2014


Your actually referencing the Tranny Brake Lock Switch, It's just under the dash along the steering column and needs specialty tools to replace.

1999 Chevrolet... | Answered on Jul 28, 2014


Check your level...or temp gauge when this comes on.

1999 Chevrolet... | Answered on Jul 17, 2014


Start with a scan tool...it could be a number of things and this tool will give you some direction as to what to look for...you can find a cheap one for around 50 bucks

1999 Chevrolet... | Answered on Jul 17, 2014


Start with a scan tool...it could be a number of things and this tool will give you some direction as to what to look for...you can find a cheap one for around 50 bucks

1999 Chevrolet... | Answered on Jul 17, 2014


In the exhaust manifold.

1999 Chevrolet... | Answered on Jul 17, 2014


I replaced the switch assembly. Approx cost $65.00. cured my problem.

1999 Chevrolet... | Answered on Jul 14, 2014


Hold preset buttons 2&3 and 1&4 for approx. 10 whole seconds.

The HU displays LOC, and a 3-digit code. Write this down.

Remove the key from the ignition slot and take the code to radio-code.com. They'll help you from here.

1999 Chevrolet... | Answered on Jul 07, 2014


Call the part store IE Auto Zone, IF the decal under your hood is missing, This factory decal tell the type , quantity and other info.

1999 Chevrolet... | Answered on Jul 03, 2014


use a voltmeter to check voltage. battery voltage when off, should be at least 12.6 or better at battery. if less than 12.4 replace battery. when car is running, voltage at battery should be at least. 13.8 to 14.2 or better. if alternator is good and charging. Do you just hear a click, when trying to start car! the click you hear is from the solinoid for the starter. meaning that not enough voltage to turn over starter. if voltage is ok! then check starter. Good-Day! check voltage at battery. for above.

1999 Chevrolet... | Answered on Jul 02, 2014


To reset the computer, disconnect the negative battery cable and let it sit for about 15 minutes. Most all codes will clear. Connecting the battery cable again and the computer will begin re-learning the system automatically. I've heard that some hard-set codes may stay in the system and need cleared using a code scanner but, I've not actually come across this before as disconnecting the battery cable has always worked for me.

1999 Chevrolet... | Answered on Jun 23, 2014


call any auto part store.. I called Auto Zone they read them all off to me...now best of luck YOU got a P1870 ???

1999 Chevrolet... | Answered on Jun 21, 2014

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