98 silverado pcm pinout

Here are some very important safety precautions when testing the wires coming out of the PCM connectors. I've spent many an hour double, triple, and quadruple checking these pin out charts in these page and in the next couple of pages using the best sources to compile it but nothing in life is perfect.

I don't have a staff of proof readers or editors or even volunteersI'm just a little guy typing this stuff up in my spare time to help and give back to the Do-It-Yourself community. So without further ado, here's my disclaimer:. If you do spot errors, please let me know. You can use the contact form at the end of the article. As an Amazon Associate, I may earn a small commission from qualifying purchases from the Amazon product links from this website.

Your purchase helps support my work in bringing you real diagnostic testing information to help you solve the problem! Page 1 Page 2 Page 3 Page 4. Each connector can be identified as: C1 Blue 32 Pin Connector. C2 Red 32 Pin Connector. C3 Clear -or Grey- 32 Pin Connector.

C4 Black 24 Pin Connector. Contents of this tutorial:. All Articles: 4. Applies To:. Cadillac Vehicles:. Do NOT follow this link or you will be banned from the site!I have tried to list all possible wires that will show up If I show a wire, and your harness does not have it, you probably don't need it anyway.

Chevrolet Silverado Wiring Diagrams 1998 to 2016

For more info about the o2 sensor differences click here. Note: Removing all of these will result in a non-emissions friendly harness. If requirements are for 4 oxygen sensors, EVAP system, then you will not want to remove those components. I have been asked to identify the wires for electronic auto trans controls that can be removed if you are not going to use electronic automatic transmission. Here they are, the Pin will be highlighted in RED.

If removing trans, pay attention to BLUE connector pin Some harnesses are different based on type of o2 sensors you have. Some this pin goes to trans only, some harnesses, there is a splice, and this pin goes to coolant temp sensor AND transmission. Click Here! Truck 5. Wire Color. Circuit No. PCM Ground. LT GRN. Injector 3 Control. Injector 2 Control. Not Used. LT BLU. Knock Sensor Signal Rear. Crankshaft Position Sensor Signal. Requested Torque Signal NW7. DK BLU. Transmission Fluid Pressure Switch B.

Transmission Fluid Pressure Switch C.

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PCM Ignition Supply. PCM Battery Supply. Crankshaft Position Sensor Ground. Sensor Ground EGR. Engine Coolant Level Switch. TCC Brake Switch. Clutch Switch Signal manual trans. Injector 1 Control.Free Wiring Diagram.

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Collection of chevy silverado wiring diagram. A wiring diagram is a streamlined traditional photographic representation of an electric circuit.

It shows the components of the circuit as simplified forms, as well as the power and signal connections in between the gadgets. A wiring diagram normally provides info about the relative position and also plan of tools and terminals on the gadgets, to help in structure or servicing the tool.

A pictorial diagram would reveal extra detail of the physical appearance, whereas a wiring diagram utilizes a more symbolic notation to stress interconnections over physical appearance.

A wiring diagram is typically used to troubleshoot issues and making certain that the connections have actually been made and also that every little thing is present. Assortment of chevy silverado wiring diagram. Click on the image to enlarge, and then save it to your computer by right clicking on the image. A wiring diagram is an easy aesthetic depiction of the physical connections and also physical format of an electric system or circuit. It demonstrates how the electric wires are adjoined and also could additionally reveal where components and also elements could be attached to the system.

Use electrical wiring diagrams to assist in structure or producing the circuit or digital device. They are likewise useful for making repairs.

Do It Yourself lovers use electrical wiring layouts but they are additionally usual in house building as well as automobile fixing. A home contractor will desire to confirm the physical location of electrical outlets and light components using a wiring diagram to prevent pricey errors and building code violations.

A schematic shows the strategy as well as feature for an electric circuit, but is not interested in the physical format of the wires. Wiring representations reveal just how the cords are linked and also where they ought to situated in the real device, along with the physical connections between all the elements. Unlike a photographic layout, a wiring diagram makes use of abstract or simplified shapes and also lines to reveal parts.

Photographic layouts are commonly photos with labels or highly-detailed illustrations of the physical parts. If a line touching an additional line has a black dot, it indicates the lines are connected.

Most icons made use of on a wiring diagram appear like abstract versions of the real things they represent. A switch will certainly be a break in the line with a line at an angle to the cable, much like a light switch you can turn on as well as off.

A resistor will certainly be stood for with a collection of squiggles signifying the constraint of existing circulation.

98 silverado pcm pinout

An antenna is a straight line with 3 little lines branching off at its end, a lot like a real antenna.Here are some very important safety precautions when testing the wires coming out of the PCM connectors.

I've made every effort to double and triple check the above info and in the next couple of pages and I've used the best sources to compile it but nothing in life is perfect. I don't have a staff of proof readers or editors, I'm just a little guy typing this stuff up in my spare time to help and give back to the Do-It-Yourself community. So without further ado, here's my disclaimer:. If you do spot errors, please let me know.

You can use the contact form at the end of the article. Many solutions were suggested for this problem, but most of these were largely concerned with the movement of small green pieces of paper, which was odd because on the whole it wasn't the small green pieces of paper that were unhappy!

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As an Amazon Associate, I may earn a small commission from qualifying purchases from the Amazon product links from this website.

Your purchase helps support my work in bringing you real diagnostic testing information to help you solve the problem! Page 1 Page 2 Page 3 Page 4.

98 Silverado Pcm Pinout

Each connector can be identified as: C1 Blue 32 Pin Connector. C2 Red 32 Pin Connector. C3 Clear -or Grey- 32 Pin Connector. C4 Black 24 Pin Connector. Contents of this tutorial:.

1998 Chevy Silverado Wiring Diagram

All Articles: 4. Applies To:. Chevrolet Vehicles:. Do NOT follow this link or you will be banned from the site!Model silverado, silveradosierra, sierra Most builders are familiar with fabrication techniques, trouble shooting, and parts swapping to make things work, but electronics rise to a much higher level of complexity.

Happened today. Below are the ECM Connectors for vortec 5. Please choose a year from the menu at left to start your search.

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When the PCM wants the fans to come on at low speed it grounds the green wire pin 42 ; when it wants high-speed fan operation, it grounds BOTH the green and blue wires. Here are the most common causes of P in the Chevy Silverado.

If I show a wire, and your harness does not have it, you probably don't need it anyway. This fuse is "hot at all times" and supplies the power to the fuel pump when the relay is energized.

I'm going to post all of my wiring diagrams and pin outs that I used to convert the L83 5.

98 silverado pcm pinout

Trendy caterpillar c12 wiring diagram 40 pin ecm cat e and x 2 on cat c12 ecm wiring diagram see more. By combining them, the PCM can better regulate their functions together. The quality of the components, the detailed step by step instructions, ease of installation, and the spot-on technical staff made wiring this car a breeze, even with a variety of aftermarket accessories.Some of them are free, other are not.

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98 silverado pcm pinout

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Wiring Diagram Schematics for your Chevy Truck

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