20 Most Recent 2006 GMC Yukon - Page 4 Questions & Answers

have your evaporative emission control system check.sound like you have purge valve solenoid not working or vent valve control solenoid.have it scan.to see which component not working..reason your gas tank expanding. your fuel vapor building up pressure.your purge valve and vent valve open allowing gas vapor from charcoil canister. to be burn in the intake manifold to be burn in combustion chamber.

try these websites to see if they have the information you need www.autozone.com and the other one is www.alldatadiy.com and if all fails stop by your local library and get your hands on a haynes auto repair manual for your truck and i also would like to give you this information as well if you every have any hard to find GM-parts they only sells GM-parts its Schram auto & truck parts 1-800-292-1032 and they website is www.schramauto.com

you need to remove the glove box it is behind it

you have to solder it back on the contact

This is the problem with blower resistance in car change the blower motor resistor in the car ...


Good luck ...

Check battery voltage. if above 13.7 volts move to rear lock actuator and measure battery voltage at actuator if above 13.6
replace actuator if below specs. check grounds and alternator out put as follows, alternator output 13.7 to 14.25 volts. key off battery volts should be 12.90 + - 3/10 of a volt and about the same voltage at the actuator. let me know. kindest regards Bill

locate the rear heater hoses, make sure eng is at operating temp.
fill of the 2 hoses , should be worm tot he touch, if one is hot and the other is luke warm, the problem is in the circulation in the rear heater core. thanks and good luck . let me know.
kindest regards Bill ps. don't over look the fan speed at the rear core.

ther should be a way to change that in the owners manual for vehicle.

I have the same problem. This is a faulty actuator switch according to GMC which controls the tailgate and the hatch window. My 2006 has 90,000 miles on it (I purchased new). Warranty is not an option and cost is estimated @ $600.00 in Arizona. As far as I am concerned, it is safety related issue and should be a recall since there isn't a mechanical way to open the tailgate or window as an escape route in the event of failure.

take off the switch and provide power to it and if it goes up and down by reversin the power and ground it is not getting power if it doesnt it is the switch

Diagnostic trouble code (DTC) P0601 stands for "Internal Control Module Memory Checksum Error." It is triggered when the powertrain control module (PCM) detects an internal problem, typically a failed Memory checksum test. The PCM's memory checksum test is performed regularly.Oct 27, 2023

P0601 Code: Internal Control Module Memory Checksum Error

CarParts.com https://www.carparts.com > ... > OBD-II Trouble Codes ..

The black wire with white lettering running from the lug on your alternator to your battery cable should be your fusible link and it will say on it.

Remove the speed sensor and look in the hole, are there teeth in there and do they move with the vehicle, this really sounds like a speed sensor problem so if all appears good including checking the wires with a continuity tester get a new sensor.

Recheck wiring not installed correctly

If you are getting a check engine or dash light check for codes Really I think it could be fuel, air or back pressure. It is a good thing to have codes sometimes. Below a few thing which my help http://www.autotap.com/problem4_engine_hesitates.asp https://www.youtube.com/watch?v=bDCaAZedVYY https://www.yourmechanic.com/estimates/gmc/yukon-xl-1500/engine-hesitates-during-acceleration-inspection https://www.youtube.com/watch?v=cXHfJTbcSgY https://www.youtube.com/watch?v=-SRgNXKoOC8 https://www.gm-trucks.com/forums/topic/200207-yukon-xl-denail-2009-severe-hesitation-and-poor-gas-milage-real-head/

Driver's side under the car, along the frame.

Fill neck on the tank collapsed?

How do you know they need to be replaced ? The switches incorporate a electronic module . Driver door module . Power Window System Components The power window system consists of the following components: • Driver Door Module (DDM) • Passenger Door Module (PDM) • Body Control Module (BCM) • RR power window switch • Window up and window down relays in each of the rear passenger window switches • Window lockout switch • Reversible power window motors in each of the doors (circuit breaker protected) • LT DOOR CB 25A (System power for left windows) • RT DOOR CB 25A (System power for right windows) Power Window System Controls The power window system will operate anytime the Retained Accessory Power (RAP) system is active or when the ignition switch is in the ACCY or ON position. The DDM contains four power window switches which are integral components. Closing any of the normally open, rocker type switches provides the DDM with a request for power window operation. The switches for the two front windows have three positions UP, Down and Express Down, while the switches for the rear windows have only two positions, UP and Down. Each of these switches and their positions is a direct input into the DDM. Upon receiving a request for power window operation, the DDM, transmits a Class 2 message indicating the switch and it's changed position. The PDM contains a single power window switch that is an integral component. Closing of this normally open, rocker switch provides the PDM with a request for the front passenger power window operation. The switch for the front passenger window has two positions Up and Down. Each of these switch positions is a direct input to the PDM. The two rear passenger doors have there own switches. Each of the switches contain a power window up and down relay. A switch activation alone can control the up and down functions of the rear windows. However the BCM, upon receiving a Class 2 message from the DDM, can control the set of relays which will activate the rear window motors. The door locks operate the same way . Door Lock System Components The power door lock system consists of the following components: • The driver door module (DDM) • The passenger door module (PDM) • The body control module (BCM) • The driver information center (DIC) • The rear door lock switch • The door lock relay • The door unlock relay • The liftgate lock relay--utility vehicles with liftgate only • The reversible door lock actuators in each of the doors and liftgate • LOCKS 20A fuse (rear lock/unlock relay supply voltage) • ECC 10A fuse (liftgate lock relay supply voltage) What's not working ? Windows , power locks ? Hooking up a professional type scan tool ,not a code reader . Code reader can not read codes in the BCM or door modules . Do you know what a DTC is ? diagnostic trouble code >All these can set for door electronic problems . DTC B1023 DTC B1544, B1600, or B1605 DTC B1580, B1590, B1610, or B1620 DTC B1640 or B1645 DTC B1722 DTC B3808 DTC B3809 DTC B3819 DTC B3820 DTC B3821 DTC B3822 DTC B3823 DTC B3824

Check light bulbs. They can be taken out with the holder from behind the bumper. They are ion the same fuse as the running lights so if they work, the fuse will be good.

Is the dash light dimmer control turned all the way to off?