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My 2005 Chevrolet avalanche 2500 8.1 vortec..cranks over but doesn't start.i put my scanner and I got loss of communication with powertrain module..

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Anonymous

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Posted on Jan 02, 2017

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Anonymous

  • 11 Answers

SOURCE: cranks but no spark/start 4.7 v8 G.cherokee

A COMMON PROBLEM I'VE SEEN MANY TIMES IS THE CRANK SENSOR DISRUPTING COMMUNICATION WITH PCM. UNPLUG THE CRANK SENSOR AND CHECK FOR RESPONSE OF PCM. IF COMMUNICATION IS NOW POSSIBLE YOU HAVE A BAD CRANK SENSOR. IT'S A PROBLEM I'VE SEEN NUMEROUS TIMES. DOUBLE CHECK YOUR TIMING.

Posted on Sep 27, 2008

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csmock132

Clint Smock

  • 4669 Answers

SOURCE: 2002 chevrolet avalanche how do you know when

If you have a bad booster you would have a really hard pedal and it would take two feet to stop. Sounds more like a fluid leak or a bad master cylinder. Are you adding fluid or do you have a red brake light on?

Posted on Mar 16, 2009

Anonymous

  • 9 Answers

SOURCE: My 1998 Chevy 2500 vortec 4.3 v6 van starts and dies instantly

sounds like your engine immobiliser fuel cut off is activating.try taking battery teminals off,re-connect and re activate your immobiliser fob the usual way,**** it will re-set itself,& or your fob battery may need changing,it,s anti-theft cut off that is your problem.good luck.

Posted on Jul 28, 2009

kevingsuzuki

  • 752 Answers

SOURCE: scanner codes 335, 543 on 1994 ford ranger 2.3L

335 crank shaft sensor,543 (Mem) Fuel pump relay or battery power feed was open.PCM is located under the instrument panel, is the brain of the EEC system

Posted on Feb 06, 2010

thark01

Travis

  • 114 Answers

SOURCE: where is the oil pressure sending unit located on

Its in the rear/ top /center. Hidden alittle, you can get it out with a special socket and it's not hard to access.

Posted on Jan 31, 2011

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1 Answer

Wiring diagram for code u0107 2004 avalanche


Do you even know what DTC U0107 involves ?
DTC U0107
Lost Communications With Throttle Actuator Control (TAC) Module

The throttle actuator control (TAC) module and the powertrain control module (PCM) communicate via a dedicated serial data circuit. This serial data circuit is separate from any other serial data circuit on the vehicle. Accurate transmitting and receiving of serial data requires not only good circuit integrity, but also adequate system voltage. This diagnostic test monitors the accuracy of the serial data transmitted between the TAC module and the PCM. If the PCM detects a loss of data or invalid data, this DTC sets.

Diagnostic Aids
Important: Reprogramming the PCM may cause a communication error between the PCM and the TAC. If the PCM detects a communication error, DTC U0107 sets. Clear any DTCs from the memory that may have been set by Reprogramming.
• DTC U0107 sets if the battery voltage is low. If the customer's concern is slow cranking or no crank because battery voltage is low, ignore DTC U0107. Clear any DTCs from memory that may have set from the low battery voltage condition.
• DTC U0107 sets when there is a short to B+ on the TAC module ground circuit. Inspect the fuses for the circuits that are in the TAC module harness--i.e. cruise, brake. An inspection of the fuses may lead you to the circuit that is shorted to the TAC module ground circuit.
Replace the TAC module. Refer to Electronic Throttle Actuator Control Module Replacement .
Did you complete the replacement?

Nov 20, 2016 | Cars & Trucks

1 Answer

U0107 code 2004 avalanche


U0107 CHEVROLET - Lost Communication With Throttle Actuator Control Module.
Possible causes - Faulty Throttle Actuator Control (TAC) module
- Throttle Actuator Control (TAC) module harness is open or shorted
- Throttle Actuator Control (TAC) module circuit poor electrical connection (loose or broken wires)

Nov 20, 2016 | 2004 Chevrolet Avalanche

1 Answer

What is code co298 powertrain malfunction on a 2004 chevy avalanche


CO 298 POWER CONTROL MODULE MALFUNCTION..
An ABS code--loss of communication with pcm/vcm.
This needs to be diagnosed by a shop.

Dec 20, 2015 | Cars & Trucks

1 Answer

How to increase idle on 4200 vortec


You have an inline six engine and it is equipped with engine-mounted electronic Powertrain Control Module that records hundreds of measurements per second and makes immediate adjustments of air, fuel, spark control, and valve timing to provide optimal engine operation. Your Vortec 4200 uses an electronic throttle control (ETC). The ETC sends a series of signals from an accelerator-pedal module using a sensor that relays acceleration-intent data to the powertrain control module (PCM).
To increase idle you will have to reprogram the PCM using an OBD 2 software. Have it service at your dealer.

Sep 03, 2015 | 2002 Chevrolet TrailBlazer

2 Answers

Change the fuel pump and still won't start on a 2002 chevy avalanche


Check for spark to the spark plugs, while cranking the engine. If no spark, you could have a bad ignition module, or a bad crankshaft position sensor. The crank sensor sends a signal to the computer, to start the fuel pump and signals the ignition module to start firing the spark plugs. It also drives the tachometer through the computer (PCM) Powertrain control module. The ignition module can be removed and taken to a parts store to have it tested. The crank position sensor is not as easy to test. Easier to just replace it. Good Luck. But wait, I have seen people replace the fuel pump, checked the fuel pump harness for power, and all was good. However, if the fuel pump does not have a GROUND, it will still not operate. Might want to check that. Have fun.

Apr 12, 2014 | Chevrolet Avalanche Cars & Trucks

1 Answer

2003 Chevy Avalanche won't start (incorrect gear indicator)


PRNDL Display
The instrument panel cluster (IPC) displays the selected gear position as determined by the powertrain control module (PCM). The IPC receives a class 2 message from the PCM indicating the gear position. The PRNDL display blanks if:
• The PCM detects a malfunction in the transmission range switch circuit.
• The IPC receives a class 2 message indicating the park position and the column park switch indicates a position other than park, open input.
• The IPC detects a loss of class 2 communications with the PCM.

Could be the transmission range sensor . Testing would need to be done , hooking up a scan tool ! Doing electrical testing etc...

Jul 06, 2017 | 2003 Chevrolet Avalanche

1 Answer

2005 Century, Check engine light on, seems like a fuel issue, sometimes it starts, sometimes it wont. We changed fuel pump, cam sensor, crank senor, fuel filter - it still does it. I am at a loss, need...


Hello
When the service engine soon light (Also called the check engine light or engine management light) is turned on this is to alert you to the fact that Powertrain Control Module (computer) has detected a failure somewhere in the systems it controls you may not feel any difference in the way the engine runs, this can be the transmission or the engine or emission system, there are fault codes set in the modules memory for these faults. What needs to happen now is to have the powertrain control module scanned with a special tool called an OBD2 electronic engine control scanner or a OBD2 code reader. Once the code(s) are read then you must perform the diagnostics for each code and make the appropriate repairs based on the findings of the diagnosis that was performed, this is called doing "Pinpoint" testing.

Oct 18, 2012 | 2005 Buick Century

1 Answer

Engine code c0298


On an 03 Sil SS C0298 "Powertrain Control Malfunction" H "Electronic Brake Control Module (EBCM)"
Believe this code to be same for your truck too. hope this helps

Aug 02, 2012 | 2005 Chevrolet Avalanche

1 Answer

Im working on 2002 avalanche and it won't start


Pull your ignition module and take it to advance auto parts or autozone to have it tested.

Mar 06, 2012 | 2002 Chevrolet Avalanche

2 Answers

2005 Avalanche Cranking/Climate Control problems


DISCONNECT THE ECU FUSE FROM YOUR FUSE BOX. WAIT 15 SECS AND THEN RECONNECT AND START YOUR VEHICLE.

Aug 24, 2008 | 2005 Chevrolet Avalanche

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