2009 Chevrolet Tahoe - Answered Questions & Fixed issues

Question edited for clarity and typos. Question moved to model category. Others report the same issue. https://www.google.com/search?q=2009+Tahoe.+The+rear+lift+gate+open+on+its+own

I have replaced everything from the little fuses to the mega fuse to the actuator and resistor and tested the blower and still nothing please help me

its all in the service manual seen below links. what if there is no flasher module at all? (dedicated in olden days) and THERE IS NOT ONE. and is the BCM job to do that. as many are now , all? newer cars. bingo this car BCM does it all. whats failing? all 4 corners dead.?? and mirrors and cluster blinker active lamp? too fast or too slow?? hazard switch fails too.? nobody like to hunt things that do no exist. and does not. so post a problem and we go to the cause, and avoid useless hunts/ answer 1 scan the PCM and check fuses first most cars 2009 flat tell you why it fails , why not do that first? chebby tahoe, 09 ok I read your SM and there is no flasher like seen for 100 years here, its GONE they blinker is a software loop inside the BCM (body brain box) bbb there are only 2 fuses but those bad cause right of left to fail not both or all of them ever. 6+ (mirrors too) the BCM has 4 outputs to blink all lamps so its NOT outputs bad

1. just , fuses blown (x2)
2. or BCM needs a reset, or battery is weak main (does car drive?)
3. or BCM bad.

the answer is learn to scan the car first and save time. https://eautorepair.net/Marketing/Default.asp

The radio won't work..

no shock absorbers are an integral part of the safe driveability of the vehicle shock absorbers with oil leaks are failed and should be replaced asap suggest that you get firm with the dealer and demand that they be replaced if you have an extended warranty that covers the items read the warranty as many extended warranties only cover engine and drive train and not what you have been lead to believe which ever what happens the units need to be replaced it is a strut type suspension it will also affect tyre wear

With an assistant, release the parking brake cable tension by pulling straight back on the intermediate cable at the cable-to-cable union until the parking brake control sector (of the brake pedal) rotates to a stop. then insert a 4mm retainer pin in the parking brake control pedal to keep it from retracting on you. Disconnect the cable running from the brake pedal to the cable-to-cable union underneath the car. Then replace the damaged or severed cable that controls either the left or right rear parking brake shoes.

There is an ASD (Auto shut down) relay. When relays get older they tend to weld their terminals together so they never turn off. Try pulling it next time this happens and see if the engine light goes out.

Karen; It depends on where you have the function buttons set to , heat, defog, etc, look in manual. Re circulation only works on some settings, press the helpful button

Most common failure (other than fuse) is the switch at the brake pedal which kicks it out of cruise. Switch must be in correct position and adjusted such that it is depressed fully when brake pedal is up.

Hi Eric, This sounds very much like the gas filled shock absorbers are shot. These are two (usually) cylinders about the size of a bicycle pump. Each is attached at one end to the tailgate and the other to the bodywork inside the tailgate opening. You should find this is fairly easily fixed.

Hi yess well you have a problem with your processer you are better to go at your dealer to have it check because you must have wather that went in your connector good lock to you my friend...

I seen this before and it was the daytime running lights that were the problem If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_4c166ba81493f541

The fuel pump control module is controlled by the ECM - engine control module , Possibility of DTC'S stored ! You need to take to Chevy Dealer ! The engine control module (ECM) supplies voltage to the fuel pump control module (FPCM) when the ECM detects that the ignition is ON. The voltage from the ECM to the FPCM remains active for 2 seconds, unless the engine is in Crank or Run. While this voltage is being received, the FPCM closes the ground switch of the fuel pump and also supplies a varying voltage to the fuel tank pump module in order to maintain the desired fuel rail pressure.

disconnect the neg on battery for 30 seconds then put back on batt and tighten up. Do not take off positive. GOOD LUCK..........

Could be a vapor lock "air trapped" in the cooling system. You will need bring it up to heat leave the refill cap off the overflow jug let it cycle the air out add anti-freeze as needed

There are certain positions for the climate control system that will cause the A/C system to activate. When the A/C is on, the radiator fans automatically run to provide airflow thru the condenser coils in front of the radiator. This could be the issue. Turn off the climate controls and recheck.

P1400: Cold Start Emission Reduction Control System

The main one in the engine bay, the interior fuses on the left side of the dash behind the removable panel.

Check the owners manuals for reset

Replace the seat belt tensioner assembly with a NEW one.