20 Most Recent 2005 Chevrolet Tahoe Questions & Answers


Some fixya user told me a website reliable-store it is very good.. I used it to repair my shredder it had some spark issue which wasn't easily fixed. you can go there and try

2005 Chevrolet... | Answered on Mar 07, 2019


New transmissions do not have a modulator valve. They are electronically controlled.

2005 Chevrolet... | Answered on Jan 24, 2019


Which of these systems does your vehicle have ?
HVAC Systems - Automatic
Blower Motor Control Processor
The blower motor control processor controls the speed of the blower motor by increasing or decreasing the voltage drop on the ground side of the blower motor. The HVAC control module provides a voltage signal to the blower motor control processor over the blower motor speed control circuit. As the requested blower speed increases, the HVAC control module increases the amount of time that the speed signal is modulated to ground. As the requested blower speed decreases, the HVAC control module decreases the amount of time that the signal is modulated to ground.

HVAC Systems - Manual
Air Speed - Front Control
The blower motor forces outside air into the vehicle's interior. The vehicle operator determines the blower motor's speed when the driver places the blower switch in one of 5 blower speeds. The blower motor will always operate in any switch position other than OFF, as long as the ignition switch is in the RUN position. The blower motor and mode switches are located within the HVAC control module. The blower motor OFF input is connected in series with the HVAC control module by the off blower motor control circuit.
Depending upon the selected speed, power is provided to the blower motor from either the ignition 3 voltage or battery positive voltage circuits from the fuse block. The battery positive voltage circuit only provides power when the High blower switch position is selected. Power and ground are provided to the HVAC control module by the ignition 3 voltage and the ground circuits.
Low Blower Speed
When the Low 1 blower speed is selected, the HVAC control module applies voltage to the blower motor resistor assembly through the low blower motor control circuit. Voltage is divided between 4 series resistors, a blower relay, and the blower motor to achieve the desired blower speed. The blower motor is grounded through the ground circuit.
Medium Blower Speeds
When the Medium 1 blower speed is selected, the HVAC control module applies voltage to the blower motor resistor assembly through the medium 1 blower motor control circuit. Voltage is divided between 3 series resistors, a blower relay, and the blower motor to achieve the desired blower speed. The blower motor is grounded through the ground circuit.
When the Medium 2 blower speed is selected, the HVAC control module applies voltage to the blower motor resistor assembly through the medium 2 blower motor control circuit. Voltage is divided between 2 series resistors, a blower relay, and the blower motor to achieve the desired blower speed. The blower motor is grounded through the ground circuit.
When the Medium 3 blower speed is selected, the HVAC control module applies voltage to the blower motor resistor assembly through the medium 3 blower motor control circuit. Voltage is divided between a series resistor, a blower relay, and the blower motor to achieve the desired blower speed. The blower motor is grounded through the ground circuit.
High Blower Speed
When the High blower speed is selected, the HVAC control module applies voltage to the blower motor resistor assembly through the high blower motor control circuit. The voltage energizes the blower relay, causing the blower motor to be connected directly to the battery positive voltage circuit. The blower motor and blower motor relay are grounded through the ground circuit.

HVAC Control Module
The HVAC control module is a class 2 device that interfaces between the operator and the HVAC system to maintain air temperature and distribution settings. The battery positive voltage circuit provides power that the control module uses for keep alive memory (KAM). If the battery positive voltage circuit loses power, all HVAC DTCs and settings will be erased from KAM. The body control module (BCM), which is the vehicle mode master, provides a device on signal. The control module supports the following features:

2005 Chevrolet... | Answered on Feb 09, 2018


Sounds like the electronic switch or plunger is going out.

2005 Chevrolet... | Answered on Feb 03, 2018


Sounds like you are having a problem with the starting motor. When activated, it throws out a gear to engage with the flywheel on the end of the engine. If there is not enough energy to fully engage the gear, or the gear does not engage properly due to misalignment, you may hear a grinding noise. Have the starting motor serviced or replaced.

2005 Chevrolet... | Answered on Jan 24, 2018


The 4X4 on your vehicle is controlled by a electronic control module .
Service 4 wheel come on ? DTC'S - diagnostic trouble code's are stored in the transfercase control module . Your best bet ,take your vehicle to a qualified repair shop

2005 Chevrolet... | Answered on Jan 09, 2018


It it usually one of the post fuse in the under hood fuse box and they are marked on the lid

2005 Chevrolet... | Answered on Nov 21, 2017


codigo p1516

2005 Chevrolet... | Answered on Nov 20, 2017


Did you check the front shields also. Had a lady going into a tizzy one time with pretty much the same problem. Squealing when turning only one way. I took it for a quick drive and pulled it into the shop. Took off the front wheel where I thought the offending sound was coming from.

Well there's your problem lady. A small rock between the rotor and dust shield. Cost to customer. $0.

Hope this helps.

2005 Chevrolet... | Answered on Oct 05, 2017


Put a full jug of CLR descaler or Plumbers radiator descaler in the radiator. Run it for a week, drain, flush, fill with antifreeze and then 'burp the system'. The last bit is very important and may well be the problem you have, the heater core is not full of coolant. Google it.

2005 Chevrolet... | Answered on Sep 03, 2017


What are the fault codes that are in memory of the ride control system, module?

2005 Chevrolet... | Answered on Jun 16, 2017


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

2005 Chevrolet... | Answered on Apr 25, 2017


The rear seal of the engine could have started to leak but a loose oil pan or damaged oil filter could be a factor.

2005 Chevrolet... | Answered on Apr 03, 2017


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.

2005 Chevrolet... | Answered on Mar 16, 2017


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.

2005 Chevrolet... | Answered on Jan 23, 2017

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