NHTSA ID Number: 10201275
Manufacturer Communication Number: PIT5750A
Summary
This Preliminary information communicates an issue with the battery goes dead and provides diagnostics tips on inspecting the LIN bus.
Condition
Some customers may comment of a dead battery. In addition to the dead battery, they may comment on any of the following items:
– Slow engine crank
– Auto Start/Stop feature inoperative, if equipped
– Radio stays on or fading out very slowly after ignition is turned off and RAP has been cancelled
– Front or rear heated seats inoperative
– DTC’s U1524, U1526, U1555, U155D
Cause
The cause of these concerns could be the BCM staying awake due to an input from a LIN Bus. It can be difficult to diagnose these types of cases. Many are misdiagnosed as the BCM being at fault and it is then unnecessarily replaced. There are two known areas that have been found, which can short out LIN Bus circuits 6133 and/or 4115 for the front/rear heated seats. If this happens, it can cause the BCM to stay awake and draw down the battery.
NOTE: Even if a truck is NOT equipped with rear heated seats, these circuits are still in the harness.
4 Affected Products
Vehicles
MAKE | MODEL | YEAR |
CHEVROLET | SILVERADO 1500 | 2019 |
CHEVROLET | SILVERADO 2500 | 2020 |
GMC | SIERRA 1500 | 2019 |
GMC | SIERRA 2500 | 2020 |
1 Associated Document
Manufacturer Communications
Bulletin No.: PIT5750A
Published date: 06/10/2021
https://www.nhtsa.gov/recalls?nhtsaId=10201275
MC-10201275-9999.pdf 567.537KB
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- STOPS RUST AND CORROSION with unique Polar Bonding and Fluid Thin Film Coating (FTFC) Technologies
- BREAKTHROUGH LUBRICANT sticks to metal like a magnet to resist displacement by friction or pressure. Lubricates under extreme loads and high temperatures.
- AMAZING PENETRANT & ANTI-SEIZE penetrates faster and further to break free rusted nuts, bolts and fittings within minutes
- SAFE ON ELECTRONICS displaces moisture and protects electronics with a self-healing high dielectric Fluid Thin Film Coating that won’t interfere with circuits
- ZERO VOC minimal environmental impact formula
- Forms a dripless, dynamic, non-hardening, self-healing film that stubbornly resists erosion by splash or spray - including complete submersion in saltwater.
- Seals out moisture
- Unlike wax coatings, it will not dry out, stiffen or crack under stress
- Kills corrosion and keeps it from returning
- Safe on electronics
- STOPS RUST AND CORROSION with unique Polar Bonding and Fluid Thin Film Coating (FTFC) Technologies
- BREAKTHROUGH LUBRICANT sticks to metal like a magnet to resist displacement by friction or pressure. Lubricates under extreme loads and high temperatures.
- AMAZING PENETRANT & ANTI-SEIZE penetrates faster and further to break free rusted nuts, bolts and fittings within minutes
- SAFE ON ELECTRONICS displaces moisture and protects electronics with a self-healing high dielectric Fluid Thin Film Coating that won’t interfere with circuits
- ZERO VOC minimal environmental impact formula
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- Self-curing Fluid Thin Film Coating (FTFC) technology
- ZERO VOC minimal environmental impact product
- Forms a dripless, dynamic, non-hardening, self-healing film that stubbornly resists erosion by splash or spray - including complete submersion in saltwater.
- Seals out moisture
- Unlike wax coatings, it will not dry out, stiffen or crack under stress
- Kills corrosion and keeps it from returning
- Safe on electronics
- QUALIFIED under U.S. military performance requirement MIL-PRF-81309H
- U.S. MILITARY TESTED AND PROVEN to be more than 2X as effective than other airframe corrosion prevention and control products
- CORROSIONX POLAR BONDING TECHNOLOGY
- Self-curing Fluid Thin Film Coating (FTFC) technology
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