NHTSA ID Number: 10185734
Manufacturer Communication Number: PIT5479D
Summary
This Preliminary Information communication provides information to the technician about fluid leaking from the brake caliper piston area found during a service of the vehicle. The substance is actually excess assembly grease from the caliper boot and piston installation. This grease can be cleaned off and the rest of the service completed.
58 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
CADILLAC | ESCALADE ESV | 2015-2021 |
| CHEVROLET | COLORADO | 2015-2021 |
| CHEVROLET | SILVERADO 1500 | 2014, 2017-2019, 2021 |
| CHEVROLET | SILVERADO 2500 | 2015-2016, 2020 |
| CHEVROLET | SUBURBAN | 2015-2021 |
| CHEVROLET | TAHOE | 2015-2021 |
| GMC | CANYON | 2015-2021 |
| GMC | SIERRA 1500 | 2014, 2017-2019, 2021 |
| GMC | SIERRA 2500 | 2015-2016, 2020 |
| GMC | YUKON DENALI | 2015-2019 |
| GMC | YUKON XL | 2020-2021 |
SEOCONTENT-START
Bulletin No.: PIT5479D
Published date: 12/14/2020
Preliminary Information
PIT5479D Diagnostic Tip – Perceived Brake Fluid Leak at Caliper Piston Boot
Models
| Brand: | Model: | Model Years: | VIN: | Engine: | Transmissions: | |
| from | to | |||||
| Cadillac |
Escalade Models | 2015 – 2021 | All | All | All | All |
| Chevrolet |
Colorado | 2015 – 2021 | All | All | All | All |
| Chevrolet |
Silverado 1500 | 2014 | All | All | All | All |
| Chevrolet |
Silverado | 2015 – 2021 | All | All | All | All |
| Chevrolet |
Tahoe | 2015 – 2021 | All | All | All | All |
| Chevrolet |
Suburban | 2015 – 2021 | All | All | All | All |
| GMC | Canyon | 2015 – 2021 | All | All | All | All |
| GMC | Sierra 1500 | 2014 | All | All | All | All |
| GMC | Sierra | 2015 – 2021 | All | All | All | All |
| GMC | Yukon Models | 2015 – 2021 | All | All | All | All |
Supersession Statement
This PI was superseded to update the Models. Please discard PIT5479C.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition / Concern
A technician may comment that, during service, it appears there is fluid leaking from the brake caliper piston area. Shown below are examples of newer low mileage vehicles and older higher mileage vehicles.
Recommendations / Instructions
The substance shown is actually excess assembly grease from the caliper boot and piston installation. This grease can be cleaned off and the rest of the service completed.
NOTE: When diagnosing a brake fluid leak or certain DTC’s for hydraulic brake circuit leaks, such as C05B0, do not confuse excessive assembly grease as a brake fluid leak. If it is uncertain what is seen is assembly grease, then clean off the excessive grease and apply the brake pedal 20 times and re-inspect for a leak.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: PIT5479D
Published date: 12/14/2020
MC-10185734-9999.pdf 1835.865KB
- Complete Tool Set: Orion Motor Tech's 24-piece brake caliper compression tool set includes 2 retaining plates, 2 thrust bolt assemblies, 2 brake caliper hangers, and 18 adapters, easily servicing your brakes without damage
- Universal Compatibility: This brake caliper tool kit includes a wide range of adapters to fit most vehicles, including hundreds of American, Japanese, and European models, fully covering your brake servicing needs
- Hassle-Free Use: Simply rotate the pistons back into their calipers to clear the pads. Embedded magnets in each thrust bolt assembly securely hold drive keys and adapters, while the right and left handed designs ensure versatile operation
- Durable Construction: Crafted from heavy-duty 1045 steel, this caliper piston compressor tool set offers exceptional strength and durability, with a powder coating for enhanced wear and corrosion resistance
- Compact & Portable: Our disc brake caliper tool set comes in a convenient storage case, ensuring your tools are organized and always within reach for home and on-the-go repairs
- Durable Material: The brake caliper compression tool is carbon steel construction with a rust-proof blasted finish, these blades will stand up to heavy use and accidental drops. It’s perfect for everyone from DIY novices to professional mechanics.
- Easy Operation: This caliper compressor tool includes both right-handed and left-handed thrust bolt assemblies, easy for brake pad replacement and rotating pistons back into the caliper on your car, truck or 4-wheel drive disc brake vehicle.
- Package Included: This brake caliper tool includes 18 x Disc Adapters (#0, #2, #3, #4, #5, #6, #7, #8, #9, #10, #A, #E, #F, #K, #K1, #K2, #M, #N); 2 x Handed Thrust Bolt Assemblies (Left & Right) ;2 x Retainer Plates (#O, #1) ;1 Brake Caliper Hanger; 2 x Rubber Coated Gloves.
- Wide Application: This multi-disc brake caliper wind back tool kit includes 18 adapters fitting hundreds of vehicle makes and models including American, European, and Japanese.
- Red Storage Case: The disc brake piston caliper compressor rewind tool set is packed in a heavy-duty storage case with precision-sized compartments for every piece - great for storage and transport while lengthening the life of the tool set.
- DUAL BRAKE TOOL SET: Orion Motor Tech's 32 pc. brake kit includes 8 drum brake tools: remover, installer, compressor, retainer, pliers, & 3 adjustment spoons, plus 24 disc brake tools with 2 retaining plates, thrust bolt assemblies, 2 hooks, & 18 adapters
- WIDE COMPATIBILITY: Altogether, this dual brake servicing kit covers hundreds of makes and models of cars and light trucks, both import and domestic, allowing you to keep regular maintenance of your brakes for safe driving
- PREMIUM MATERIAL: Each brake tool is made of structural-grade steel for outstanding strength, durability, and longevity; the black oxide, chrome, and sandblasted coated parts ensure superior long-lasting wear and corrosion resistance
- EASY OPERATION: Both the drum brake and the caliper wind back tools offer reinforced ergonomic handles to save you time, effort, and aggravation during use, allowing you to focus on getting the job done right
- BLOW-MOLDED CASES: The custom blow-molded carrying cases with their clear labeling and instruction manuals make these sets easy to use, organize, store, and transport between job sites
- COMPLETE SET: Orion Motor Tech's 10 pc. brake tool kit includes all the necessary accessories for servicing your drum brakes: pliers, installers, removers, compressors, retainers, hooks, and standard, angled, and mini adjustment spoons
- PREMIUM MATERIAL: The metallic components are made of structural-grade 45# steel to offer good ductility as well as outstanding strength, durability, and longevity; black oxide and chromate coatings ensure all parts are wear and corrosion resistant
- STURDY HANDLES: The 4 brake spring tools feature reinforced ergonomic handles to save you time and spare you effort and aggravation during use
- CUSTOM CASE: The rugged blow-molded case keeps everything well organized and easy to store or transport between jobs
- WIDE APPLICATION: This brake tool set is designed to fit hundreds of domestic and import vehicle makes and models in the market, covering your automotive servicing needs
- Complete Tool Set: Orion Motor Tech's 24-piece brake caliper compression tool set includes 2 retaining plates, 2 thrust bolt assemblies, 2 brake caliper hangers, and 18 adapters, easily servicing your brakes without damage
- Universal Compatibility: This brake caliper tool kit includes a wide range of adapters to fit most vehicles, including hundreds of American, Japanese, and European models, fully covering your brake servicing needs
- Hassle-Free Use: Simply rotate the pistons back into their calipers to clear the pads. Embedded magnets in each thrust bolt assembly securely hold drive keys and adapters, while the right and left handed designs ensure versatile operation
- Durable Construction: Made from tough carbon steel and 40Cr steel, this caliper piston compressor tool set is built for long-lasting strength, while its powder-coated and zinc-plated finishes provide added protection against wear and corrosion
- Compact & Portable: Our disc brake caliper tool set comes in a convenient storage case, ensuring your tools are organized and always within reach for home and on-the-go repairs
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