ACDelco GM Original Equipment PT3739 Multi-Purpose Pigtail Kit

In this review the ACDelco GM Original Equipment PT3739 Multi-Purpose Pigtail Kit is evaluated for drivers and mechanics who need a reliable replacement for GM vehicle harness connectors. The bottom line: this pigtail kit is aimed at technicians and DIYers who value exact-fit, OE-spec parts and want a straightforward splice solution that matches factory performance. It stands out for providing a direct replacement made to GM specification and for offering long-lasting durability that simplifies repairs without guesswork.

Key Features

• GM OE specification: Manufactured to match the original factory component so the connectors fit and function like the part they replace.
• Protective outer coverings: The outer coverings add durability and help protect wire splices from abrasion and environmental exposure for longer service life.
• Color-coded wires: Color coding speeds installation and reduces wiring mistakes when splicing into the vehicle harness.
• Multi-purpose kit: Designed to work with a range of GM electrical repair needs, making it useful for lighting and other harness repairs.
• Quality shrink butt splice option: Includes higher quality shrink butt splice style components that reviewers noted for better sealing and connection longevity.

Who It's For

The PT3739 pigtail kit is best for GM owners, independent mechanics, and DIY enthusiasts who need a direct replacement for worn or damaged factory pigtails and want parts that meet original equipment standards. It is particularly helpful when exact fit and long-term durability matter, such as repairing lighting harnesses or other electrical connectors on GM trucks and cars.

Those who should look elsewhere include people repairing non-GM vehicles or technicians who require a kit with a wider variety of specialty terminals; this kit is tailored to GM OE repair tasks rather than a universal assortment of every terminal type.

Pros & Cons

Pros

• Fits GM vehicles and is manufactured to GM OE specification for confident compatibility.
• Protective outer coverings increase durability and help ensure a longer service life for spliced connections.
• Color-coded wires make installation faster and reduce wiring errors during repairs.
• Considered good value by customers who noted quality components like the shrink butt splice.

Cons

• Kit content is tailored to GM OE replacements, so it may not include every terminal or connector type needed for non-GM repairs.
• Does not replace the need for proper crimping tools and technique to achieve optimal results.

Specifications

Our Verdict

The ACDelco PT3739 is a sensible buy for anyone repairing GM wiring who wants OE-matching parts and durable splices without hunting for matched connectors. It delivers reliable fit and useful installation cues like color-coding, and customers report good value and performance on GM vehicles. For GM-specific electrical repairs this kit offers practical durability and peace of mind at a reasonable price.

Frequently Asked Questions

Will this fit my GM truck?
Yes, the kit is made to GM OE specification so it is intended as a direct replacement for compatible GM factory pigtails; check vehicle connector type to confirm fit.

Are the splices weatherproof?
The kit includes protective outer coverings and shrink-style butt splice components that improve sealing compared with bare crimp splices, but proper installation is required for best protection.

Is this kit universal for all vehicles?
It is designed as a GM-recommended replacement and is best used for GM vehicles; it may not include every connector type needed for non-GM repairs.