NHTSA ID Number: 10137883
Manufacturer Communication Number: PI1201A
Summary
This preliminary bulletin provides a procedure to replace the exhaust systems with a noisy PEV to correct a cutomers concern of the exhaust rattle, buzz, or pop.
2 Affected Products
Vehicles
Parts
| MUFFLER, EXH (W/EXH PIPE) | CK155 (43) 4.3 (LV3), 5.3-C (L83), CK157 (53) 4.3 (LV3) , 5.3-C (L83) | 20757703 |
| MUFFLER, EXH (W/EXH PIPE) | CK157 (03) 4.3 (LV3), 5.3-C (L83), 6–SPD AUTO TRANS (MYC) | 20757704 |
| MUFFLER, EXH (W/EXH PIPE) | CK157 (43) 4.3 (LV3), 5.3-C (L83) | 20757702 |
| MUFFLER, EXH (W/EXH PIPE) | CK159 (03) 4.3 (LV3), 5.3-C (L83) | 20757701 |
| MUFFLER, EXH (W/EXH PIPE) | CK157 (43) 6.2 (L86) | 23199937 |
| MUFFLER, EXH (W/EXH PIPE) | CK155 (43) 6.2 (L86), CK157 (53) 6.2 (L86) | 23440153 |
SEOCONTENT-START
Bulletin No.: PI1201A
Date: April, 2014
| Subject: | Exhaust Rattle, Buzz, Pop or Whistle |
| Models: | 2014 Chevrolet Silverado 1500 |
| 2014 GMC Sierra 1500 | |
| Equipped with 4.3L, 5.3L or 6.2L Engine (RPOs LV3, L83, L86) |
|
| Built Prior to December 8, 2013 or Muffler Julian Date of 352 2 (See Below) |
This PI has been revised to add the 6.2L Engine. Please discard PI1201.
Condition/Concern #1
Some customers may comment on a rattle, buzz and/or pop (oil canning) noise heard coming from the exhaust system under different conditions.
Recommendation/Instructions #1
The correction of the muffler pop or oil canning noise will require the replacement of the cold end or back half of the exhaust system.
Note: The exhaust system rattle can also be diagnosed by tapping on the bottom of the muffler.
Condition/Concern #2
Some customers may comment on a whistle type noise that can be heard coming from the muffler area.
Recommendation/Instructions #2
- Temporarily lock the Passive Exhaust Valve (PEV) in the open position, located behind the muffler, as shown in the illustration above.
- Rotate the Passive Exhaust Valve (PEV) counterclockwise as shown in the illustration above.
- For testing purposes only, obtain a 1/4″ x 20 x 2” steel bolt, nut, lock washer and two large standard 1/4″ x 1” outside diameter washers (body washer), and install the bolt as shown in the illustration above.
- If the condition is reduced or changes greatly in severity, replace the exhaust system.
Condition/Concern #3
Some customers may comment on a vibration in the seat or steering wheel felt when the truck engages V4 mode (Active Fuel Management).
Recommendation/Instructions #3
- Verify the condition.
- Review exhaust system for Ground Outs at the mounts and repair as necessary.
- For testing purposes only, obtain a 1/4″ x 20 x 2” steel bolt, nut, lock washer, and two large standard 1/4″ x 1” outside diameter washers (body washer), and install the bolt as shown in the illustration above.
- If the condition is reduced or changes greatly in severity, replace the exhaust system.
Parts Information
| Description | Usage | Part Number |
| MUFFLER, EXH (W/EXH PIPE) | CK155 (43) 4.3 (LV3), 5.3-C (L83), CK157 (53) 4.3 (LV3) , 5.3-C (L83) | 20757703 |
| MUFFLER, EXH (W/EXH PIPE) | CK157 (03) 4.3 (LV3), 5.3-C (L83), 6–SPD AUTO TRANS (MYC) | 20757704 |
| MUFFLER, EXH (W/EXH PIPE) | CK157 (43) 4.3 (LV3), 5.3-C (L83) | 20757702 |
| MUFFLER, EXH (W/EXH PIPE) | CK159 (03) 4.3 (LV3), 5.3-C (L83) | 20757701 |
| MUFFLER, EXH (W/EXH PIPE) | CK157 (43) 6.2 (L86) | 23199937 |
| MUFFLER, EXH (W/EXH PIPE) | CK155 (43) 6.2 (L86), CK157 (53) 6.2 (L86) | 23440153 |
Warranty Information
For vehicles repaired under warranty, use:
| Labor Operation | Description | Labor Time |
| 4051980 | Exhaust Muffler Replacement | Use Published Labor Operation Time |
SEOCONTENT-END
Bulletin No.: PI1201A
Date: April, 2014
To View or Download this Document Click Here
Bulletin No.: PI1201A
Date: April, 2014
To View or Download this Document Click Here
Bulletin No.: PI1201
Date: March, 2014
To View or Download this Document Click Here
Bestseller No. 1
Auto Dynasty 4" Catback Exhaust Tip System For 07-13 Silverado Sierra 1500
- Vehicle Compatibility - This cat-back exhaust is compatible with 2007-2013 Chevy Silverado 1500 Crew/Extended Cab Short Bed, 2007-2013 GMC Sierra 1500 Crew/Extended Cab Short Bed
- Brilliant Performance - Come with [1] high performance racing design exit cat-back exhaust kit, can increase 15 to 25 horsepower instantly or low end torque and maximize to enhance the exhaust gas flow without sacrificing the aggressive tone sound in the smooth conditions.
- Extraordinary Quality - It is constructed of high quality aluminized steel with computerized mandrel-bends for the strength and durability, and the TIG welded CNC machine can resistant against pressure and corrosion.
- Simple Installation - Easy for the installation, make you enjoy the best performance in the fastest time.
- Product Specification - Major Piping: 3" OD | Inlet: 3" OD | Muffler Tip Type: Round | 4" OD Round Diagonal Cut Muffler Tip
Bestseller No. 2
![DNA MOTORING CBE-CS09-4853L-4DR Stainless Steel Cat Back Exhaust System [Compatible with 07-13 Silverado 1500/07-13 Sierra 1500 Crew/Extended Cab Short Bed]](https://m.media-amazon.com/images/I/41UreDyap1L.jpg "Exhaust Rattle, Buzz, Pop or Whistle - 2014 Chevrolet Silverado & GMC Sierra 1500 8")
DNA MOTORING CBE-CS09-4853L-4DR Stainless Steel Cat Back Exhaust System [Compatible with 07-13 Silverado 1500/07-13 Sierra 1500 Crew/Extended Cab Short Bed]
- 【FITMENT】Compatible with 07-13 Chevy Silverado 1500 Crew/Extended Cab Short Bed; Compatible with 07-13 GMC Sierra 1500 Crew/Extended Cab Short Bed
- 【Quality Construction】Made of High Quality T-409 Stainless Steel with Computerized Mandrel-Bends for Strength and Durability. TIG welded CNC machine flange for resistance against pressure and corrosion.
- 【Enhance Performence】Dyno proven to instantly increases 15 - 25 horsepower / low end torque. Aggressive deep and smooth tone while ensures smooth exhaust gas flow, increase engine output and efficiency.
- 【Muffler & Diameter】2. 5" OD / 3" OD / Louvered Core Muffler
- 【Design】The larger pipes, low-restriction mufflers, and tuned resonators of a well-designed performance exhaust system can make stunned effect on your vehicle: lower auto exhaust back pressure and a much better sound.
Bestseller No. 3
Exhaust Muffler Intermediate Pipe Exhaust System Kit Compatible for 2010-2017 GMC Terrain & Chevrolet Equinox 2.4L | Stainless Steel | Northeastern Exhaust | Free Clamps and Hangers Included
- COMPATIBLE WITH: 2010 2011 2012 2013 2014 2015 2016 2017 GMC Terrain & Chevrolet Equinox 2.4L, Models
- STAINLESS STEEL 409 GRADE: Our Exhaust Part/Exhaust System Kit/Assembly is meticulously engineered from durable stainless steel, ensuring durability and resistance to corrosion, even in challenging driving conditions.
- OPTIMIZED EXHAUST FLOW: Designed to enhance exhaust flow, the Exhaust Part/Exhaust System Kit/Assembly minimizes back pressure, potentially improving your car's horsepower and torque.
- SATISFACTION GUARANTEED: We are confident in the quality of our products and offer a satisfaction guarantee. If for any reason you are not satisfied with your purchase, we offer a hassle-free return policy.
- WARRANTY: All items listed are 100% Brand new and come with a ONE-TIME REPLACEMENT lifetime warranty against manufacturing defects. The warranty does not cover shipping, labor, or any other charges, Damages due to shipping, installation, and incidental fees are non-refundable. Items that have been installed, and modified are non-returnable.
Bestseller No. 4
Rough Country Dual Cat-Back Exhaust for 19-24 Chevy/GMC Sierra |5.3L - 96011
- Dual Cat Back Design with Rear Exit.
- Corrosion Resistant 409 Stainless Steel | 16 Gauge Tubing | 409 Stainless Black Muffler and Clamps.
- Dual Wall Stainless Steel 304 Black Tips | Can Retain your OEM Dual Tips.
- Installs into OEM Hangers | No Welding | Easy at Home Installation.
- Backed by Rough Country's Limited Lifetime Replacement Warranty.
Bestseller No. 5
FOMIUZY Front Catalytic Converter Kit Direct-Fit Chevy Silverado GMC Sierra 1500 1999 2000 2001 2002 2003 2004 2005 2006 Avalanche Suburban Tahoe Yukon XL Cadillac Escalade 4.3L 4.8L 5.3L
- 【Standards】: Our catalytic converters have strict production procedures and comply with EPA standards and Obd2 standards. However, due to the increased emission standards in California, Colorado, New York, and Maine, no sales were carried out in these states (friends in these states, please rest assured, we are developing)
- 【Direct Replacement】: If your engine throws P0420 code, or your cat is stolen, then it is recommended to buy this kit to solve the problem. This catalytic converter can repair faults and noise, car exhaust can be purified. It meets or exceeds the oem standard, and has been tested in the factory, perfectly matched with the original car, and can be installed directly.
- 【High Quality】: The stainless steel body of high-quality aluminized pipes is not easy to rust, ensuring excellent oxygen storage capacity and long service life. The double-layer high temperature resistant ceramic carrier greatly increases the flow rate and surface area, thereby improving power and fuel economy. Replace with a new catalytic converter to provide you with excellent clean air performance, restore the quietness of the vehicle, and restore a good driving experience for you
- 【Fits For】: ☆For Chevy 1999-2006 Chevy Silverado 1500 4.3L 4.8L 5.3L | 2007 Chevy Silverado 1500 Classic 4.8L 5.3L | 1999-2000 Chevy Silverado 2500 5.3L | 2002-2006 Chevy Avalanche 1500 5.3L | 2000-2006 Chevy Suburban 1500 5.3L | 2000-2006 Chevy Tahoe 4.8L 5.3L ☆For GMC 1999-2006 GMC Sierra 1500 4.3L 4.8L 5.3L | 2007 GMC Sierra 1500 Classic 4.3L 4.8L 5.3L | 1999-2000 GMC Sierra 2500 5.3L | 2000-2006 GMC Yukon 4.8L 5.3L | 2000-2006 GMC Yukon XL 1500 5.3L | ☆For Cadillac 2002-2006 Cadillac Escalade 5.3L
- 【Buy With Confidence】：Our catalytic converter has a lifetime warranty. If the part fails or breaks, please contact us for replacement. Save hundreds of dollars off of dealer prices by purchasing this part and taking advantage of our warranty.Price concessions and guaranteed, no need to worry about quality problems
This product presentation was made with AAWP plugin.