Where is the ignition switch on a 1997 GMC?

Disconnect the ignition switch from the vehicle wiring harness connector at the base of the steering column. Place your multimeter in Ohms mode. Place the ignition key in the ACC position. You should have continuity between terminals D2 and D6 of the ignition switch connector.

How do you change the ignition switch on a 1987 Chevy pickup?

Unplug the wiring harness connected to your pickup’s ignition switch. Remove the two bolts holding the switch in place on the steering column with a socket wrench. Lift the ignition switch vertically away from the steering column, and discard it. Install a new ignition switch in your 1987 Chevrolet pickup by reversing the removal process entirely.

How do you remove an ignition switch from a truck?

The switch is square and has a large wiring harness connected to its back. Unplug the wiring harness connected to your pickup’s ignition switch. Remove the two bolts holding the switch in place on the steering column with a socket wrench. Lift the ignition switch vertically away from the steering column, and discard it.

What kind of ignition switch does a 1997 Chevy Tahoe have?

This tutorial will help you test the ignition switch on the 1997 Chevrolet and GMC Pick Up, Suburban, Tahoe, and Yukon equipped with a 4.3L, 5.0L, or a 5.8L V8 engine. The ignition switch test involves checking for continuity across specific terminals of the ignition switches connector.

When to replace ignition switch in Chevy Tahoe?

1995-1998 GMC/Chevy pickup, tahoe, blazer, suburban, etc. ignition switch replacement. If you’re truck won’t start, the gauges aren’t working, or you have random transmission problems, the ignition switch could be at fault. This is a step by step tutorial on how to fix a broken ignition switch. Loading…

How do you replace an ignition switch on a car?

Installing a Replacement Squeeze the release pin on the ignition switch so it’s flush with the side. The same release pin that stopped the switch from coming out now needs to be pressed in so you can slide the switch into place inside the ignition module. Slide the ignition switch into its hole.

Where is the release pin on an ignition switch?

The new or rebuilt switch should slide easily back into its hole on the steering column. Align the shape of the cylinder and the location of the release pin with the coinciding grooves in the ignition module.

What’s the Accessory position on an ignition switch?

Insert the key and turn it to the “accessory” position. The ignition switch needs to be set to the accessory position before you can release it from the ignition module. The “accessory” position is before the starter is engaged, and would normally let you run the vehicle’s electronics without the engine running (when the battery is connected).

What are the 5 positions of the ignition switch?

The ignition switch, on the 1997 Chevrolet and GMC pick up and SUVs covered by this tutorial, have 5 positions. These are: ACC, LOCK, OFF, RUN, START. When you turn the key to any one of these positions, the ignition switch simply ‘opens’ or ‘closes’ certain circuits (wires) together.

What to do if your key is stuck in the ignition switch?

The key may be stuck in the ignition switch, but that shouldn’t stop you from turning it. If you don’t have a key, you will need to force the module to turn using a flathead screwdriver. Press the release pin inside the hole on the ignition module with a screwdriver.

When do you Know Your GMC Sierra ignition switch is bad?

If your GMC Sierra is starting right up, but then immediately dies, that is a very good indication that the ignition switch is bad. Here’s what happens. You aren’t getting power to the ignition or fuel pump while the key “rests” in the run position.

What are the symptoms of a defective ignition switch?

The most common symptom of a defective ignition switch is an ‘engine does not crank’ problem. To be a bit more specific, your turn the key to crank and start the engine but nothing happens. Everything works (headlights, wipers, horn, radio, power windows, etc.) but the starter motor won’t crank the engine.

Why does my GM car say no start no crank?

How to diagnose a no start no click on GM vehicle. If you have a late model GM vehicle and turn the key only to hear nothing, you’ll most likely think you have a dead battery—and you may. But a no start, no crank, no click condition can be far more involved than that.

What are the symptoms of a bad ignition switch?

Which parts get that power depends on where you turn the switch after you insert the car key. These are the most common problems associated with a faulty ignition switch: Engine dies: This is one of the most common symptoms of a bad ignition switch.

How does the ignition switch work on a GM car?

The ignition switch now talks to the body control module (BCM) and it’s the BCM that initiates one of two relays. The second relay, the more important of the two, is controlled by the powertrain control module (PCM). And it only operates the starter relay after it’s satisfied that the correct key is in the ignition.

Can a worn key cause an ignition switch to go bad?

Before spending time and money to replace the ignition switch, a thorough diagnosis should be performed. Some of the symptoms above can be caused by a worn key. Also, the term “ignition switch” commonly refers to the full ignition assembly, which includes the ignition lock cylinder and the ignition switch.

Where is the ignition switch on a 1997 GMC?