if wiggling the harness solves the problem for a short time then either a bad connection or shorted wire is problem invest in buying a multi meter very cheap but very versatile tool while working on electrical systems and test the wiring harness as well as going to auto store and pick up a repair manual for your vehicle
The power windows an power locks are controlled by a module , DDM - driver door module . As far as the locks locking when you put the vehicle into reverse an unlocking when you put the vehicle into park , that's how there are suppose to work , automatic lock an unlock feature . When you put the vehicle into any gear from park the locks should lock . Did she hit window lockout function ?
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 .
Programmable Automatic Door Locks
The automatic door lock feature can be programmed to control the door lock system. The automatic door lock feature is factory programmed to have all doors lock and unlock. For detailed instructions on programming the automatic door locks, refer to Vehicle Personalization in Personalization.
When the automatic door lock feature is programmed to control the door lock system, the driver door module (DDM), passenger door module (PDM) and body control module (BCM) will lock the vehicle doors if the following inputs are true:
• Ignition 1 input is active.
• All door jamb switch inputs are inactive.
• Cargo door or liftgate/liftglass ajar inputs are inactive.
• Transmission is shifted out of park.
This automatic door lock function will only occur once per ignition cycle unless, a door jamb switch input changes state to active and back to inactive. Then the DDM, PDM and BCM will lock all doors again.
Once the automatic door lock feature has locked the doors, the BCM will then unlock all the doors when the transmission is shifted into park.
Driver, Passenger and Cargo Door Lock System Operation
The front power door lock switches are integral components of the driver door module (DDM) and passenger door module (PDM). The switches are two position normally open rocker switches. When placed in either the lock or unlock positions, the switches provide a direct input to the DDM or PDM. The DDM or PDM monitors these inputs and sends a Class 2 message indicating a change in the switch's respective position. Modules which activate the power door lock motors receive the Class 2 message and activate the motor in the appropriate direction to lock or unlock the vehicle's doors and liftgate. The rear door lock switch provides a lock and unlock signal to the body control module (BCM). The BCM upon receipt of a lock or unlock signal will control the rear door lock relays and also send a Class 2 message to the DDM and PDM to perform the appropriate function.
The modules which activate the power lock motors are:
• The DDM (driver door lock actuator).
• The PDM (passenger front door lock actuator).
• The BCM (both rear door lock actuators and cargo door/liftgate).
The DDM and PDM are directly connected to the respective door lock actuator through the door lock motor lock and unlock circuits. Once a door lock or unlock request has been received, the module will supply battery voltage to one side of the actuator and ground the other causing the doors to lock or unlock.
The rear passenger and cargo doors differ slightly in that they use lock and unlock relays. The relays supply and coil sides receive a constant voltage through the battery voltage supply circuit. The normally closed contacts are connected to ground and the control side is connected to the BCM. Once a door lock or unlock request has been received by the BCM, the BCM will ground the control side of the appropriate relay. This energizes the relay and allows voltage to be applied to either the door lock motor lock or unlock circuits. since the other side of the door lock actuator is connected to the normally closed contacts of the opposing relay to ground, the doors lock or unlock.
Dear Sylvia,
Of course you can replace the computer, but remember, if you have not fixed the problem to cause these symptoms, you may find the new computer will not work either.
You need to be absolutely sure the computer is the problem.
It would take many pages of this web site to tell you how to replace the computer, so it will be just as easy for you to go to a library or a car parts store, and get a repair manual and follow those instructions.
Libraries check out such book, you need not buy them.
Some name brands are : "Chilton's", "Motor's", and "Haynes".
All are make and model specific.
God bless your efforts.
Go to autozone.com, register for free and list this vehicle. Then you can get some repair procedures and specs for torque. Once your vehicle is listed, go to "repair guides" to find the specs.
As with all engine codes there is no one solution fits all, here is the info on the code from the diagnostic material.
P0118 - Engine Coolant Temperature Circuit High Input
Possible causes
- Low engine coolant level - Engine Coolant Temperature (ECT) sensor harness is open or shorted - Engine Coolant Temperature (ECT) sensor electrical circuit poor connection - Faulty Engine Coolant Temperature (ECT) sensor - Faulty engine coolant thermostat
P0118 Description
The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
When the airbag dash indicator is lighted there is a problem with the airbag system and it is inoperative until repaired. There can be other problems but the front impact sensors typically fail and can be easily replaced. Go to O'Reilly auto parts store for free diagnosis. For the 2005-2006 Tahoe, code B0100 is driver side impact sensor and B0103 is passenger side. You can purchase there for $90.00 or save $30.00 by ordering from Amazon or eBay, just make sure to get Dorman part 590-200. To install: use an 8mm box wrench to pull the battery negative cable, turn the headlight switch on, and for good measure wait 30 minutes, just to make sure the airbag controller is dead. Go under front of vehicle and use a 15 mm socket to remove the 4 bolts for the plastic skid plate. Locate the sensor on either side at bumper level and use a 10mm box wrench to loosen the single bolt on the sensor. Once the sensor is loose pull the orange plastic lock out of the connector clip, then pry/pull the connector out of the sensor. Install in reverse order. Once finished stand to side of steering wheel and turn ignition key on. Airbag light will flash then clear. Youtube has video to make it even easier. Older and newer Tahoes may have different sensor codes and part numbers so verify for your model.
You need to check your High Air Flow Mass Sensor. If engine stays running when you unplug sensor. Then it's bad. This sensor controls how your throttle responds to your air flow from air box. If not reading good air flow at W.O.T. engine wont respond to Quick acceleration. NO POWER is what you'll get until engine begins to throttle up then it's now running on pure engine power but no throttle response. Try cleaning with carb cleaner or brake cleaner.
The Internet, though, has a large number of web sites where
you can buy service manuals and schematics from bookstores,
publishers, and other collectors. Here is just a sampling of
what sites are out there:
Factory Auto manuals
http://www.factoryautomanuals.com/
search for : factory service auto repair manuals
Repair Service Manuals
http://www.repairservicemanuals.com/
the largest collection of Automotive Repair Service Manuals
and Owners Guides on the internet. Our database currently
holds over 54,000 entries dating back from 1940 to more
recent 2011.
about Chilton Repair Manuals
http://www.chilton.cengage.com/
about Haynes Repair Manuals
Haynes Publishing
Haynes auto manuals
http://www.haynes.com/
1.) Does the rear heater blow hot air?
2.) What is the engine temperature displayed on the gauge on the dashboard?
3.) Is the vehicle low on antifreeze/coolant?
you have too change the whole assembly.
pull the wheel, pull the caliper, pull the caliper mount, pull the rotor, pull the half shaft nut, then take the three bolts out of the hub assembly, and pull it.
