Engine Wire Harness Chafing / IPC Gauges Sweep / IPC Warning Message / SES/Check Engine/MIL / No Start / No Crank / Runs Rough / Stalls / Reduced Engine Power / Various DTCs – 2019-2021 Cadillac Chevrolet GMC

2020 Chevrolet Silverado 1500

NHTSA ID Number: 10224856 Manufacturer Communication Number: 21-NA-149 Summary This technical bulletin provides repair information to correct a customer concern of Engine Wire Harness Chafing.   Condition 1 This Condition pertains to vehicles equipped with engine 2.7L, L3B only. Some customers may comment on any of the following concerns: – SES MIL – No Start – No … Read more

Instrument Panel Cluster (IPC) Warning Lamps And / Or MIL Are Illuminated Diesel Exhaust Fluid (DEF) Message Displayed Various DTCs Set (Inspect Wiring Harnesses for Chafing) – 2016-2021 Chevrolet Colorado & GMC Canyon

2018 Chevrolet Colorado

NHTSA ID Number: 10184101 Manufacturer Communication Number: PIP5416D   Summary This Preliminary Information communicates to the technician the potential areas of concern in which the engine wiring harness may chafe. It describes in detail what to look for. If you encounter any of these specific described chafes, inspect, repair (as necessary) and route the wiring harness away from … Read more

SES Lamp With Camshaft Position Codes – 2014-2019 Cadillac Chevrolet GMC

2019 Chevrolet Silverado

NHTSA ID Number: 10162143 Manufacturer Communication Number: PIP5335C Summary This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Codes P0340 and P0341 setting at times. Technician should use normal published Service Information diagnostics. If normal Service Information diagnostics does not … Read more

SES MIL / Service Suspension System / ABS MIL / No Crank / Misfire / A/C Inoperative (Inspect Engine Harness Chaffing At Vacuum Pump Pulley) – 2014-2016 Cadillac Chevrolet & GMC

2016 Chevrolet Suburban

  NHTSA ID Number: 10083249 Manufacturer Communication Number: PIT5307D   Summary THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE A SERVICE ENGINE SOON MALFUNCTION INDICATOR LAMP, ANTILOCK BRAKING SYSTEM MALFUNCTION INDICATOR LAMP, SERVICE SUSPENSION SYSTEM MESSAGE, MISFIRE, HESITATION, NO CRANK, HEATER-VENT-AIR CONDITIONING INOPERATIVE. TECHNICIAN MAY FIND F11UA, F104UA, F35UA, AND OR … Read more