20 Most Recent 2005 GMC Canyon Extended Questions & Answers

hello, if your e-brake is stuck then you could look at the unit on the side and there should be a small lever that you can pull to release the brakes if the cable is not working, the cables themselves could be frozen? or something mechanical inside the drums or calipers in the rear that could be stuck and not moving. there is a possibility that the master cylinder is at fault, but rare. you can open the rear wheel bleed valves and see if the vehicle can move? if so, then check the rubber lines to the wheels? to be bad

Hi Pattie , What relay are you jumping ? Run/crank or start relay ? Your check engine light an passlock light are lit because there is a problem an you need to take it an have it checked out ! Unless you have a factory or equivalent scan tool ! There are DTC'S - diagnostic trouble codes stored in the BCM - body control module an in the PCM - powertrain control module . Your dealing with complex electronics an jumping things you have no clue as to how it works can render you vehicle useless ! The body control module (BCM) performs multiple body control functions. The BCM can control devices directly connected to its outputs based on input information. The BCM evaluates this information and controls certain body control systems by commanding outputs on or off. The BCM control inputs can be: ?€¢ Sensors and switches that are directly connected to the BCM

?€¢ Class 2 serial data received from other control modules connected to the class 2 serial data link.

The BCM is also capable of controlling other vehicle systems that are not directly wired to the BCM. The BCM does this by sending specific messages on the class 2 serial data link. The control module capable of performing the required function will respond to the BCM message. The data link connector (DLC) allows a scan tool to communicate with the class 2 serial data line. The serial data line is the means by which the microprocessor-controlled modules in the vehicle communicate with each other. Once the scan tool is connected to the class 2 serial data line through the DLC, the scan tool can be used to monitor each module for diagnostic purposes and to check for diagnostic trouble codes (DTCs). Class 2 serial data is transmitted on a single wire at an average of 10.4 kbps. This value is an average, class 2 uses a variable pulse width modulation to carry data and depending on the message it may operate faster or slower. The bus will float at a nominal 7 volts during normal operation. Each module can pull this lower during the transmission. The bus is not at battery positive voltage or ground potential during normal operation. When the ignition switch is in RUN, each module communicating on the class 2 serial data line sends a state of health (SOH) message every 2 seconds to ensure that the module is operating properly. When a module stops communicating on the class 2 serial data line, for example if the module loses power or ground, the SOH message it normally sends on the data line every 2 seconds disappears. Other modules on the class 2 serial data line, which expect to receive that SOH message, detect its absence; those modules in turn set an internal DTC associated with the loss of SOH of the non-communicating module. The DTC is unique to the module which is not communicating, for example, when the inflatable restraint sensing and diagnostic module (SDM) SOH message disappears, several modules set DTC U1088. Note that a loss of serial data DTC does not normally represent a failure of the module that set it. Body Control Module (BCM) The body control module (BCM) contains the logic of the theft deterrent system. The BCM provides the 5-volt reference to operate the Passlock?"¢ sensor. The BCM also measures the voltage of the off/run/crank voltage. The voltage measured will indicate whether the Passlock?"¢ sensor has been activated and whether the resistance value from the sensor is a valid value or the tamper value. If voltage measured is in the valid range, the BCM compares this voltage to a previously learned voltage code. If the voltage codes match, the BCM sends a serial data message containing a password to the engine control module (ECM). If the voltage codes do not match, or the voltage is in the tamper range, or there is a circuit fault, the BCM will not send the correct password to the ECM, and the vehicle will not start.

replace ecm computer

Im pretty sure I know what the issue is.. You security system has failed, therefor enabling the car to start. This is common in GM vehicles. I had an issue with my car.. I found a bypass module . It worked for me I even installed it. your car in on the list for this problem.. check it out.. hope it helps

if you look under truck at the backing plates you can see the cables going in. there is a spring and a lever.take a hammer and punch to tap the levers away from springs(to make cables longer) it should release brakes

You posted your question TWICE in TWO DIFFERENT WAYS. This wastes everyone's time. In light of THIS iteration of your same question, check the last comment in my previous post.

Stuck mechanism or damaged parking brake cable. Start by troubleshooting the mechanism under the dashboard, and move backwards to the rear brakes. It is possible that one of your adjustors in back has rusted out.

check the rear end and check if the cable is broken/. frayed and jamming the brakes on . Check for rusted cables. If rear brakes are discs the check the brake action of the hand brake.

Chevrolet has had issues with steering collum wiring for years.

Do they work when you turn on the 4-way hazard flasher? If so, look at the BCM (body control module) located under the passenger kick panel.

Take to the Dealer or Oil Changing Shop cost little or nothing it probably not connect all the way in.

Did you have battery replaced or other work?.... try this. http://www.fixya.com/cars/t3701296-power_door_locks_driver_side_power

Reduced Power means that the PCM has detected an active failure in either the engine, transmission or brake system. You The PCM reduced power to help protect an affected system. You need to start by checking the oil level. How was the engine running and the transmission shifting? Do you have a code reader? The codes need to be retrieved. Please write back with the codes. Good Luck.

You must scan the system with a special tool as it is computer controlled.

When battery voltage is lost, sometimes there are some modules that may need to be reprogrammed? It could effect your security system, where applicable. I don't know model year? If it cranks good but won't start, make sure battery has a full charge. Have a helper crank it while you check for spark at the plugs. Also, check proper fuel pressure and fuel injector pulse. Find out what your missing, if anything?

If the check engine light was on DTC'S - diagnostic trouble code's should be stored . If the light was on , disconnecting the battery won't do anything . Diagnostic's need to be done . Sounds like you have no clue , so best advice , take it to a qualified repair shop .