Chevrolet G20 1981-1987 Distributor Ignition Pickup Replacement Guide
Solve stalling and no-start problems by understanding and replacing your van's distributor pickup.
- A no-start or sudden stalling condition is the most common sign of a bad pickup coil in your G20.
- Replacement is a moderately difficult DIY job that requires removing the distributor and re-setting ignition timing.
- Choosing a quality aftermarket brand like ACDelco, Delphi, or Standard Ignition is crucial for a lasting repair.
- While the part is inexpensive, consider replacing the entire distributor assembly if your van has high mileage for greater reliability.
Is Your 1981-1987 G20 Stalling or Not Starting? It Could Be the Pickup Coil.
If your Chevrolet G20 suddenly stalls, especially after it has warmed up, or if it cranks but refuses to start, a faulty distributor ignition pickup could be the culprit. This component lives inside the distributor and is responsible for triggering the spark. Due to age and constant heat exposure inside the engine bay, the delicate windings inside the pickup coil can break down, leading to intermittent or complete failure. This guide will help you understand the symptoms, choose the right replacement part, and know what the repair involves.
Common Symptoms of a Failing G20 Pickup Coil
- Engine cranks but won't start: This is the most common symptom. The pickup coil isn't sending a signal, so the ignition module doesn't know to create a spark.
- Sudden stalling: The engine may shut off without warning while driving, as if you turned the key. It might restart after cooling down, only to stall again later.
- No spark: A quick check will reveal no spark coming from the ignition coil or at the spark plugs. This points directly to a failure in the primary ignition circuit, where the pickup coil is a key player.
- Engine sputtering or misfiring: While less common than a complete failure, a pickup coil on its way out can send erratic signals, causing the engine to run rough, sputter, or misfire.
Choosing the Right Aftermarket Pickup Coil
For a vehicle like the 1981-1987 G20, the original GM parts are often discontinued. Thankfully, the aftermarket provides reliable options. The key is to choose a brand known for quality ignition components. Among the available brands, ACDelco, Delphi, and Standard Ignition (Standard Motor Products) are all reputable choices.
- ACDelco: This is GM's own parts brand. An ACDelco part is often considered the true original equipment (OE) equivalent and is engineered to the factory specifications. For a guaranteed fit and OE performance, ACDelco is a top choice, though sometimes it can be the most expensive option.
- Delphi: Delphi was once a part of General Motors and a major OE supplier. They have a long history of making quality electronic and ignition components. A Delphi pickup coil is a strong, reliable choice that often meets or exceeds original specifications.
- Standard Ignition (SMP): Standard Motor Products is a highly respected aftermarket manufacturer that has been around since 1919. They are known for producing parts that are equal to, and sometimes better than, the original equipment. Forum discussions among classic GM truck owners often recommend Standard parts as a dependable, high-quality alternative to OE.
Pro Tip: While replacing the pickup coil, it's a good idea to also inspect the ignition control module, which is another common failure point in HEI distributors. Many owners choose to replace both at the same time for peace of mind, along with a new distributor cap and rotor if they are worn.
Replacement Cost
The cost to replace the distributor ignition pickup depends on whether you do the work yourself or hire a mechanic. The part itself is relatively inexpensive, but the labor can be significant because the distributor must be partially or fully disassembled.
| Item | Estimated Cost |
|---|---|
| New Aftermarket Pickup Coil | $28.95 - $77.02 |
| Shop Labor | $150 - $300 |
| Total Estimated Cost | $178.95 - $377.02 |
Frequently Asked Questions
Do I have to remove the whole distributor to replace the pickup coil?
Yes, replacing the pickup coil requires removing the distributor from the engine. The distributor shaft must be taken out to access the C-clip that holds the pickup coil assembly in place. This makes the job more complex than a simple cap and rotor change.
What tools do I need to replace the pickup coil?
You will need basic hand tools, a timing light, and a hammer and punch to remove the roll pin from the distributor gear. A bench vise is also highly recommended to hold the distributor securely while you work on it. Because you are removing the distributor, you will need to re-set the engine's ignition timing after installation.
How do I test my old pickup coil?
You can test a pickup coil with a multimeter set to ohms. Disconnect the coil's leads and measure the resistance between the two terminals. It should show a steady reading between 500 and 1500 ohms. If you flex the wires and the reading jumps around or goes to infinite, the coil is bad. You should also test from each terminal to the distributor housing; the reading should be infinite (no connection).
Is it better to replace the whole distributor?
If your van has high mileage, replacing the entire distributor assembly can be a smart move. A new or remanufactured distributor will come with a new pickup coil, ignition module, cap, and rotor already installed. This can save time and prevent future failures of other old components like a worn distributor shaft or gear.
Are there any recalls for the ignition system on my 1981-1987 G20?
No, searches of the National Highway Traffic Safety Administration (NHTSA) database did not find any specific recalls or technical service bulletins (TSBs) for the distributor ignition pickup on the 1981-1987 Chevrolet G20. Major GM ignition switch recalls in the 2010s were for much newer vehicles and different types of ignition systems.
Technical Specifications
OEM Part Numbers: D1987
Located inside the HEI distributor. Generates an AC signal to trigger the ignition module. Resistance should be within 500-1500 ohms.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Chevrolet G20: