Ignition Contact Set Guide for the 1945-1947 GMC CC102
Keep your classic GMC running strong by understanding how to spot, diagnose, and replace a failing ignition contact set.
- Failing points will cause hard starting, rough running, stalling, and a loss of power.
- For this vintage truck, new aftermarket parts are the only option; Standard Ignition is a well-regarded brand.
- Always replace the ignition condenser at the same time as the contact set to prevent premature failure.
- Replacement is a common DIY tune-up task, with setting the correct point gap being the most important step.
Is Your Ignition Contact Set Failing? Common Symptoms
Ignition points are a normal wear-and-tear item, designed to be replaced during a regular tune-up. The two small metal contacts can become pitted or burned over time, and the small rubbing block that rides on the distributor cam wears down. When this happens, your truck's performance will suffer. Watch for these clear signs.
Choosing the Right Aftermarket Part
For a vintage truck like the 1945-1947 GMC CC102, new original equipment (OEM) parts are no longer available. The aftermarket is the primary source for new ignition components. Fortunately, reputable brands have been making these parts for decades.
- Standard Ignition: This is a well-known and trusted brand for ignition components. Their standard line offers reliable, OEM-quality performance suitable for daily driving and regular use. Many classic truck owners and mechanics have used their parts for years with good results. Their premium "Blue Streak" line often exceeds original specifications, offering enhanced durability. For a stock GMC CC102, a Standard Ignition contact set is a solid, dependable choice.
Pro Tip: Replace the Condenser, Too
It is highly recommended to replace the ignition condenser at the same time as the contact set. The condenser's job is to absorb voltage spikes and prevent the points from arcing, which causes them to burn out prematurely. Most ignition contact sets are sold in a kit that includes a new condenser and a packet of lubrication for the distributor cam.
New Aftermarket Ignition Contact Set Cost for 1945-1947 GMC CC102
| Part Type | Price Range |
|---|---|
| New Aftermarket Ignition Contact Set | $21.44 |
| Shop Labor | $90 - $180 |
Frequently Asked Questions (FAQ)
How often should I replace my ignition points?
As a general guideline for older vehicles, ignition points should be inspected every 6,000 miles and replaced every 12,000 to 20,000 miles. However, given the age of your CC102, it's best to check them any time you notice performance issues like a rough idle or hard starting.
What is the difference between points and electronic ignition?
Points are a mechanical switch that wears out over time and requires regular adjustment. Electronic ignition systems, like a Pertronix kit, replace the points and condenser with a magnetic pickup and a module. This provides a more consistent spark and eliminates the need for regular maintenance, but if the electronic module fails, the vehicle will not run at all.
Is replacing the ignition contact set a DIY job?
Yes, this is a common tune-up task that many classic truck owners do themselves. It requires basic hand tools, a feeler gauge to set the gap, and sometimes a dwell meter for fine-tuning. The most critical step is setting the correct gap between the points when they are fully open.
Are there any recalls for the ignition system on my 1945-1947 GMC CC102?
No, there are no recalls or Technical Service Bulletins (TSBs) from the NHTSA for the ignition contact set on these trucks. This is expected for a vehicle of this era, as these issues predate modern recall systems.
Technical Specifications
The 1945-1947 GMC CC102 was typically equipped with a 228 cubic inch inline-six engine and a 6-volt electrical system.
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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.