Diagnostic Tips

Service ABS / TCS / Power Steering and/or Suspension Message DTC U0077 U0121 U0126 U0131 U0139 U0151 U0401 U0415 U0428 (Circuit 5986 High Resistance) – 2014-2019 Cadillac Chevrolet GMC

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2016 Chevrolet Silverado

NHTSA ID Number: 10162127 Manufacturer Communication Number: PIT5457D Summary This Preliminary Information communication provides information to the technician about vehicle with Service ABS and/or Traction control lights/message on, Service Power Steering System, Service Suspension System, and or Loss of communication with EBCM, SWPS, PSCM, and/or SCM. Technician may find Diagnostic Trouble Codes U0077, U0121, U0126, U0131, U0139, … Read more

Diagnostic Tip – Service Driver Assist Message – 2014-2017 Cadillac Chevrolet GMC

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2017 Cadillac Escalade

NHTSA ID Number: 10083360 Manufacturer Communication Number: PIT5445A   Summary THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN OF ADDITION INFORMATION WHEN DIAGNOSING A SERVICE DRIVER ASSIST MESSAGE WITH A DIAGNOSTIC TROUBLE CODE B172E AND OR A B172F. THE HAPTIC SEAT MOTOR HAS A PIGTAIL LEAD COMING OFF OF IT. IN MANY CASES THE WIRING PIGTAIL … Read more

MIL Illuminated, DTC P16F3 with Engine Power is Reduced Message Displayed in DIC – 2014 Chevrolet Corvette

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2014 Chevrolet Corvette

NHTSA ID Number: 10137224 Manufacturer Communication Number: PI1532A Summary This preliminary informational bulletin provides repair information on Engine Control Module (ECM)reprogramming to correct a customer concern of MIL illuminated, DTC P16F3 with “Engine Power is Reduced” message displayed in the DIC   1 Affected Product Vehicle CHEVROLET CORVETTE 2014     SEOCONTENT-START Bulletin No.: PI1532A Date: Nov-2015 … Read more

Diagnosing Suspension And Rear End Sway – 2007-2016 Buick Chevrolet GMC Saturn

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2016 Chevrolet Traverse

NHTSA ID Number: 10127185 Manufacturer Communication Number: PIT5139C   Summary This Preliminary Information communication provides information to the technician about vehicles that the rear end has a sway feeling in the rear while switching lanes at highway speeds. Technician should follow all published Service Information diagnostics for the concern. Also inspect the rear suspension components for signs … Read more

Cold Start Misfires – 2014-2016 Cadillac Chevrolet GMC

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2016 Chevrolet Corvette

NHTSA ID Number: 10127175 Manufacturer Communication Number: PIP5323 Summary This Preliminary Information communication provides information to the technician about vehicles with misfires or roughness on cold start up. Technician may find a Diagnostic Trouble Code P0300 stored. Technician will add coolant dye to the system, run engine through warm up, pressurize the cooling system on a cold … Read more