WenmarOpen by Wenmar Pro

Service bulletins for the 2016 Cadillac CTS

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1669 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
PI0653C2017-12-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. This preliminary informational bulletin provides dealership personnel with policies and procedures regarding damaged, disassembled or improperly packaged turbochargers returned to Warranty Part Center.
GCUS-3-7672017-12-22. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. 33530 Service Update. Certain vehicles may have an engine ground cable (EGC) that could come in contact with the passenger side half-shaft assembly, which may cause the EGC to wear through the insulation and the cable diameter may reduce over time. If this occurs, a noise near the front passenger's side may be heard while the vehicle is in motion. If the insulation on the EGC is worn through to the bare cable, arcing may occur between the EGC and half-shaft at engine start. If the EGC is severed while the vehicle is in motion, and the driver brakes to a stop and the vehicle enters stop/start mode, the engine will shut off and various driver information center (DIC) messages will display. The vehicle will not be able to re-start. Dealers are to use a tie strap to attach the EGC to the engine harness. If there is extensive damage, the engine ground cable can either be repaired or the engine wire harness can be replaced.
GCUS-3-6522017-12-22. Service bulletin. ENGINE AND ENGINE COOLING. 43880 02 - Service Update Bulletin (Warranty Information section revised). On some vehicles equipped with a start/stop engine control option, the system level interactions related to the transition of run/crank and accessory inputs to the engine control module (ECM) during a crank event are compromised. This results in communication issues between the ECM and the intelligent battery sensor. The check engine light will illuminate and the stop/start system is suspended while the fault is active, resulting in degraded fuel economy.
PI1234C2017-12-22. Service bulletin. ENGINE. This preliminary information bulletin provides a procedure on a brief rattle or tick when revving the engine when the vehicle is in P (Park) or N (Neutral). The same rattle or tick can sometimes be heard at the beginning or end of a vehicle acceleration while in D (Drive).
00-06-01-026H2017-12-22. Service bulletin. ENGINE. This informational bulletin provides information on intake manifold inspection/replacement after severe internal engine damage.
PIP55312017-12-14. Service bulletin. ENGINE; POWER TRAIN. This Preliminary Information communication provides information to the technician on the steps need to diagnose and repair vehicles that may have stalling shudder and/or hard shifting into 1st gear or reverse vibration on launch (with excessive crankshaft end play). Technician will test to determine if the crank shaft end play is within specification 0.0015–0.0086 inch. If end play is found to be out of specification, remove engine and inspect for possible crankshaft thrust bearing and/or crankshaft for wear. Inspect thrust bearing for wear on one side and crankshaft on that “mating” surface. If the thrust bearing has three vertical channels worn off replace connecting rod bearings, main bearings, thrust bearing and crankshaft. If working on a Corvette the oil tank with lines and oil cooler are both required to be replaced if equipped
PIP5498C2017-11-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This Preliminary information communicatesA vehicle may have a concern ofDTCP050D settingalongwith a P0300 after a cold start up. White smoke and/or coolant odor may come from exhaust for an extended period of time at cold start as well. CauseCoolant getting into the cylinders, and provides direction for the repair.
PIP55282017-11-14. Service bulletin. ENGINE. This Preliminary information communicates the identification process for High Feature V6 camshafts in re-manufactured engines.
PI0653D2017-10-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. This preliminary informational bulletin was created to inform Service Agents or Dealers, they may be charged back for parts and labor due to the turbo-chargers are being returned to the Warranty Parts center damaged, improperly assembled or missing parts and advising to properly package the complete turbochargers. (New models and RPOs added)
16-NA-3072017-10-15. Service bulletin. ENGINE AND ENGINE COOLING. This technical bulletin provides examples of how the transmission cooler lines may cause noise and how to adjust or repostion the lines away from the vehicles body.
PIP55032017-10-04. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). This Preliminary information communicates to the dealer additional information on checking for the engne crankcase being overfull on oil causing an engine vibration concern. The technician is advised to inspect for contaminnants and adjust the engine oil level as needed.
PIP5330B2017-10-04. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician about vehicles that have a coolant loss and/or coolant odor after driving the vehicle. Technician will need to test the cooling system looking for leaks at the outer head bolts. If coolant is found replace the head the concern is present on.
PIP5498A2017-10-04. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicatesA vehicle may have a concern ofDTCP050D settingalongwith a P0300 after a cold start up. White smoke and/or coolant odor may come from exhaust for an extended period of time at cold start as well. CauseCoolant getting into the cylinders, and provides direction for the repair.
PIP5216F2017-10-04. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician about vehicles that have a knock noise, seized engine, lower end squeak or squeal from the engine. Technician will inspect the oil control solenoids for metal debris. Also inspect for damage to the cam caps Journals and camshaft journals on the heads. The check the timing chain idler sprockets for stiffness when turning. If any of these instances would be a cause to replace the engine instead of repair.
PIE0350B2017-08-31. Service bulletin. ENGINE AND ENGINE COOLING. This engineering informational bulletin is requesting information from the field on vehicles that have a concern on Bang or Loud Noise with No Forward (Drive) or Reverse Ranges
PIP5395B2017-08-31. Service bulletin. ENGINE. This Preliminary Information communication advises the technician on the steps to diagnose the concern and the steps to repair the concern. Customer hears a rattle or ticking noise that is louder inside the vehicle than outside. A-This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that may have rattle or ticking noise that is louder inside the vehicle than outside. The noise may also sound like a lifter tick. If the noise is heard best at the fuel line and the sound will be real loud with a stethoscope. The fuel line will need to be replaced.
PIE0369B2017-08-31. Service bulletin. ENGINE. This engineering informational bulletin is requesting information from the field of vehicles with the condition of a SES light on with one or more DTC's set.
17-NA-0392017-08-31. Service bulletin. ENGINE. This informational bulletin provides additional information on what oil to use in the 2.0L engines to eliminate the risk of engine/piston failure.
17-NA-0072017-08-31. Service bulletin. ENGINE. This technical bulletin provides a procedure to install a anti rattle spring on the actuator arm for the turbo and to correct the customers concern of a rattle noise heard from front of the engine.
07-06-04-025L2017-08-31. Service bulletin. ENGINE. This informational bulletin provides information on Clicking/Ticking Sound/Noise Heard During Cold Start and that this should be considered a normal characteristic.
PIP5232B2017-08-15. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. This Preliminary Information communication provides information to the technician about gasoline powered cars, mid-size trucks, light duty trucks, and heavy duty trucks with premature catalytic converter failures. It is recommended to inspect for a poor crimp on the grounds ring terminal at the engine block for the bank with the concern and repair the wire.
PIC6137A2017-08-15. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY; ENGINE. This Preliminary Information communication provides information to the technician about vehicles that the engine stops running after extended idle with shifter in park. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle. If the customer exits the vehicle with the fob in their possession while the engine is running and the shifter is left in park, the engine will shut off after 2.5 hours. If the customer is sitting in the vehicle with the engine running and the fob is in the vehicle, the Passive Entry Passive Start system will reach out and look for the fob after 2.5 hours. If the fob is located, the timer will reset an additional 2.5 hours.
PIP5216B2017-08-15. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician about vehicles that have a knock noise, seized engine, lower end squeak or squeal from the engine. Technician will inspect the oil control solenoids for metal debris. Also inspect for damage to the cam caps Journals and camshaft journals on the heads. The check the timing chain idler sprockets for stiffness when turning. If any of these instances would be a cause to replace the engine instead of repair.
PIP5216A2017-08-15. Service bulletin. ENGINE. This Preliminary Information communication provides information to the technician about vehicles that have a knock noise, seized engine, lower end squeak or squeal from the engine. Technician will inspect the oil control solenoids for metal debris. Also inspect for damage to the cam caps Journals and camshaft journals on the heads. The check the timing chain idler sprockets for stiffness when turning. If any of these instances would be a cause to replace the engine instead of repair.
PIP5319A2017-08-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. This Preliminary Information communication provides information to the technician about vehicles that have a rattle from the turbocharger when cold. The technician will need to verify the noise is coming from the turbocharger before going forward. Technician will need to replace the turbocharger with the updated part number if verified the rattle noise when cold is from the turbocharger.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.