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Video on 1999 chevy silverado 4.3 mootor to replace timming chain

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6ya6ya
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Posted on Jan 02, 2017

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  • 255 Answers

SOURCE: 2001 chevy tracker

Hi,If you are mechanicly inclined replacing the timing belt should be simple ,If the car still runing be sure to aling the timing marks perfect and make a note of the position in a piece of paper,If not you can get the specs at the auto parts where you get the belt ...YES they can jump do to wear and they can cause valves to bend ,this can also cause major engine damage....

Posted on Aug 17, 2008

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robslac24
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SOURCE: 01 Chevy Silverado 4 X 4 not working. 4WD light

Having the same exact problem but with my 1999 escalade. Thought it was the actuator bought a new one installed it transfer case would engage but front end wouldnt lock. Took it out of housing left it plugged in got a friend to go through all the 4wd for me and the plunger never moved out the actuator. Checked my wiring harness which is a four prong ann it had one hot prong like it is suppose to. Traced wires even replaced dash switch same problem. Taking it to local dealership tom to have it checked for codes. I was told it could be the transfercase actuator even though its workin that actuator is what sends power to the front to engage the actuator to lock the differential.

Posted on Sep 16, 2009

Jim1969pa3
  • 152 Answers

SOURCE: I have a 1999 chevy silverado and I need to change heater core

Not a whole lot different. Just need to keep removing plastic down at the heater until you get to the heater core. Then disconnect it on the firewall side.

Posted on Dec 22, 2009

Molson02536
  • 3854 Answers

SOURCE: 1999 1500 Chevy Silverado - microchip for anti-theft?

Document ID# 803013
1999 Chevrolet Chevy K Silverado - 4WD

Security Lamp Illuminated on the IP, Engine Stalls, No Start, DTC B2960 (Security System Sensor Data Incorrect but Valid) Set (Inspect and Repair Cause of DTC B2960)
1999-2001 Chevrolet and GMC C/K Pickup and Utility Models (Silverado, Sierra, Tahoe, Suburban, Yukon, Yukon XL)

This bulletin is being revised to add information on inspecting for electrical intermittent conditions and important connector C201 tightening steps. Please discard Corporate Bulletin Number 01-08-56-002 (Section 08 -- Body and Accessories).

Condition
Some customers may comment on the following conditions. These symptoms may be intermittent.

• Security lamp illuminates while driving. The Security lamp may be On or Off when the customer brings the vehicle to the service facility.

• The engine cranks but will not start and the Security lamp is flashing.

• The engine starts then stalls and the Security lamp is flashing.

Cause
Condition(s) may be due to an incorrect Passlock™ sensor voltage received by the body control module (BCM) from the Passlock™ sensor due to the following conditions. Most intermittent conditions are caused by faulty electrical connections or wiring.

• A 7 ohm variation in the sensor ground circuit wiring, circuit 1057

• A 100 ohm variation in the Passlock™ sensor signal wiring circuit, circuit 1836

Inspect for the following items:

• Broken wiring inside the insulation.

• A poor connection between the male and female terminal at the connector. Refer to Testing for Proper Terminal Contact under Testing for Intermittent and Poor Connections in Wiring Systems for the specific procedure.

• A poor terminal to wire connection. Some conditions that fall under this description include poor crimps, poor solder joints, crimping over the wire insulation instead of the wire itself, and corrosion in the wire to terminal contact area.

• Wire insulation that is rubbed through. This causes an intermittent short as the bare area touches other wiring or parts of the vehicle.

• A poor connection between the male and female terminal at a connector. This poor connection may be the result of contamination or deformation.

- Contamination may be caused by the connector halves being improperly connected. A missing or damaged connector seal, damage to the connector itself, or exposing the terminals to moisture and dirt can also cause contamination. Contamination, usually in the underhood or underbody connectors, leads to terminal corrosion, causing an open circuit or intermittently open circuit.

• Separate the connector halves.

• Visually inspect the connector halves for contamination. Contamination may result in a white or green build-up within the connector body or between terminals. This causes high terminal resistance, intermittent contact, or an open circuit. An underhood or underbody connector that shows signs of contamination should be replaced in its entirety including the terminals, the seals, and the connector body.

- Deformation is caused by probing the mating side of a connector terminal without the proper adapter, improperly joining the connector halves, or repeatedly separating and joining the connector halves. Deformation, usually to the female terminal connector tang, can result in poor terminal contact causing an open or intermittently open circuit. Using an equivalent male terminal from the J 38125-B, test that the retention force is significantly different between an good terminal and a suspect terminal. Replace the female terminal in question.

Correction
Have any of the following components had service recently?

• The BCM

• The ignition lock cylinder case assembly

• The PCM/VCM

If any of the above components have been replaced, the Programming Theft Deterrent System Components procedure must be performed before any diagnostic procedures are performed.

To assist in diagnosis, the following steps are provided.

Does the engine start? If not, use the Engine Cranks but Does Not Run diagnostic information in the Engine Controls sub-section of the applicable Service Manual.
Important:

• The Security telltale on the message center is controlled by the vehicle theft deterrent (VTD) system and the content theft deterrent (CTD) system. The Security telltale is controlled by the BCM through the Class 2 data line.

• The VTD system portion of the BCM controls the Security telltale when the ignition switch is in the On position. The VTD system uses the Security telltale as a malfunction indicator.

• The CTD system portion of the BCM controls the Security telltale when the ignition switch is in the Off position. The CTD system uses the Security telltale to identify system status.


Observe the Security indicator lamp in the instrument panel.
Remove the key from the lock cylinder.
- Security indicator should be Flashing when the door is open.

- Security indicator should be Off when all the doors are closed.

- If the Security indicator does not come On or go Off correctly, refer to the Content Theft Deterrent System diagnostic and repair information in the applicable Service Manual.

With the Doors closed, place the key in the lock cylinder and turn to the Run position. Observe the Security indicator lamp.
- Lamp is On and does not go Off however, the engine starts. This indicates that the VTD system detected a fault when the engine was running.

- Lamp flashes On and Off. This indicates a problem has been detected by the VTD (Passlock™) system and the engine may not start this key cycle, a current condition.

Important: You must diagnose the diagnostic trouble codes (DTCs) in the order specified in the DTC table shown below. Failure to do so may result in one or more of the following conditions:


• Extended diagnostic time

• Incorrect diagnosis

• Incorrect parts replacement


DTC
Diagnostic Procedure
Module

Important: Before you use this table, diagnose P0601, P0602, P0604, and P0606. Refer to Diagnostic System Check - Theft Deterrent.

PXXXX Other PCM DTCs

Refer to the following procedures:

• Diagnostic System Check - Engine Controls in Engine Controls - 4.3L

• Diagnostic System Check - Engine Controls in Engine Controls - 4.8L, 5.3L, 6.0

• DTC P0192 in Engine Controls - 6.6L

• Diagnostic System Check - Engine Controls in Engine Controls - 8.1L


If none of the above items are true, proceed with the following steps:

Install seat covers.
Connect the scan tool to the diagnostic link connector (DLC).
Enter scan tool diagnostics.
Select the model year of the vehicle.
Select light truck.
Select F1, (Body).
Select "C" or "K" for Series.
Select F0, Body Control Module.
Select F0, (Diagnostic Trouble Codes (DTC)).
Select F0, (DTC information).
Select F0, (Current DTC).
Record on the repair order any current DTCs displayed. If none, skip the next step.
Is a current B2960 DTC displayed? If no, the condition is not present with this key cycle. Continue to the next step.
Select Exit.
Select F1, (History DTC).
Are any history DTCs other than B2960 present? If so, diagnose those DTCs first using the appropriate service information, otherwise continue.
Select Exit.
Select Exit.
Select F1, Data Display.
Select F6, Security.
Cycle the key to the OFF position and wait 20 seconds.
Slowly turn the key to the RUN position. Be careful not to turn the key into the START position.
Observe the following values:
- Passlock™ Data Voltage should be 5.0 volts.

- Passlock™ State should be Normal.

- Passlock™ Code should be Open.

Rotate the key to the START position, and observe the following again:
- Passlock™ Data Voltage should be less than 5.0 volts. Passlock™ Data Voltage should remain steady and not fluctuate. The test vehicle used for this diagnostic procedure had a voltage value of 2.49 volts. The vehicle being worked on may be either higher or lower than this value. The key is that it has to be less than 5.0 volts.

- Passlock™ State should be "Monitor Passlock™".

- Passlock™ Code should be Valid Code.

If no trouble is found and the customer has experienced one of the symptoms or the code is a history DTC, the most likely cause is the VTD (Passlock™) wiring, specifically the wires from the VTD (Passlock™) sensor to the BCM.

Posted on May 14, 2010

  • 396 Answers

SOURCE: 1999 chevy silverado service 4 wheel drive light

I had a similar problem with the Service 4 Wheel Drive light which came on intermittently then became more consistent in the message center display. It would go into 4 wheel drive if the message center did not display the Service 4 Wheel Drive message in the message center, but not when the message was displayed. I found the transfer case switch module in the dash was defective, and it has been working with no other problems for three years.

Posted on Jul 22, 2010

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1999 chevy silverado with p1345,p0171,andp0174


Did you verify the sensors were faulty before you replaced them ? Code 1345 means the signal from each sensor is not in sync with the other. That means one sensor signal is out of sync, or there is a problem with the timing chain.
Codes 171 and 174 deal with the issue of the fuel system being too lean on both banks or heads. You could have compression or fuel problems that would cause those codes.
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The 3.8 liter engine has a timing chain. The distributor shaft should be turning if your timing chain is still intact. Have you pulled it out and reinstalled it? Maybe you did not get it seated right.
This must not be a '99 Silverado as shown in the heading? Give a reply back, and explain please. You replaced a fuel pump in the gas tank, and now the distributor shaft is not rotating? There is no plausible relation between the two-please explain.

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1 Answer

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make sure you have fuel going to the mottor then make sure you have spark to the spark plugs. if no fuel then your filter or fuel pump may be bad. if no spark then your crank sensor is bad . also it may be your timming belt or chain

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gettin to much gas could cause it to.

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