I just did a tune up on my 2004 Chevy Tahoe. I

Shouldn't need reprogramming. I removed the cluster from my 04 Silverado and sent it in for repair and replacement of the bulbs. It was out of my truck for 2 weeks. When I got it back everything worked just fine, no problems at all.

well i guess it all depends on if it fits? u can put most any radio and speakers into a car and it fits and all the wires match up, but u also have to have the right connection, and if ur not sure how to put it in i would suggjest just going to a automobile shop or car dealer near you. Hope it helped

You need special equipment to test this, so the dealer is the next step.

I would replace
1. spark plugs. Do not go cheap on the plugs use the proper AC Delco spark plug
2. cap and rotor
3. spark plug wires
4.fuel filter
and then i would have a fuel injection cleaning done . there is not a timing adjustment or air fuel adjustment this is all done by the PCM ( Powertrain Control Module )

how does it run? if runs good then have code cleared but if not then you need to make sure the wires are pushed all the way on the plugs and coil make sure the plug gap is correct and make sure all the plugs are good and not cracked or damaged, you may have to pull plugs out one by one. did you be chance unplug maybe an injector or coil and for got to plug it in? please let me know what you find and i will help you

Spark plugs, spark plug wires. Fuel filter, transmission service. Also the O2 sensor/s.

ck make sure plugged in, or replace sending unit

I would do a full tune up first. Plugs, wires, rotor, cap and coil. If your idle is still rough consider MAP sensor, idle position sensor, or any other emissions sensors maybe suspect. They usually set codes that would trigger your "check engine" light. On the other hand check belts and tension pully if you have one. Lastley, change the fuel filter put in some injector cleaner. A good shop can test the fuel pressure from the fuel pump. I hope this can help.

just go to a garage or dealer to have your light cleared with a computer

BLACK-ground
RED-accessorie
YELLOW-power 12v
PURPLE-left rear
GREEN-right rear
WHITE-left front
GREY-right front
BLUE-REMOTE
and the other blue one is for remote antenna..