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TSB: BUICK ACADIA, BLAZER, CT4, CT5, CT6, ENCORE GX, ENVISION, SIERRA 1500, SIERRA 2500, SILVERADO 1500, SILVERADO 2500, TRAILBLAZER, XT4, XT5, XT6 (2019–2021)

Bulletin PIP5712B — March 26, 2021

Bulletin Details

Bulletin IDPIP5712B
ManufacturerBUICK
ModelsACADIA, BLAZER, CT4, CT5, CT6, ENCORE GX, ENVISION, SIERRA 1500, SIERRA 2500, SILVERADO 1500, SILVERADO 2500, TRAILBLAZER, XT4, XT5, XT6
Model Years2019–2021
Date IssuedMarch 26, 2021
Date Added to NHTSAApril 19, 2021
ComponentENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
Vehicles Affected52 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

This Preliminary information communicates to the technician a service Diagnostic / Repair tip to avoid causing the crankshaft sprocket to disengage from the crankshaft during crankshaft balancer or cam drive system component related service

Affected Vehicles

MakeModelYearComponent
GMC ACADIA 2021 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
GMC ACADIA 2021 100000 POWER TRAIN
CHEVROLET BLAZER 2021 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CHEVROLET BLAZER 2021 100000 POWER TRAIN
CADILLAC CT4 2021 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CADILLAC CT4 2021 100000 POWER TRAIN
CADILLAC CT5 2021 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CADILLAC CT5 2021 100000 POWER TRAIN
BUICK ENCORE GX 2021 100000 POWER TRAIN
BUICK ENCORE GX 2021 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
BUICK ENVISION 2021 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
BUICK ENVISION 2021 100000 POWER TRAIN
GMC SIERRA 1500 2021 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
GMC SIERRA 1500 2021 100000 POWER TRAIN
CHEVROLET SILVERADO 1500 2021 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CHEVROLET SILVERADO 1500 2021 100000 POWER TRAIN
CHEVROLET TRAILBLAZER 2021 100000 POWER TRAIN
CHEVROLET TRAILBLAZER 2021 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CADILLAC XT4 2021 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CADILLAC XT4 2021 100000 POWER TRAIN
CADILLAC XT5 2021 100000 POWER TRAIN
CADILLAC XT5 2021 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CADILLAC XT6 2021 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CADILLAC XT6 2021 100000 POWER TRAIN
GMC ACADIA 2020 100000 POWER TRAIN
GMC ACADIA 2020 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CHEVROLET BLAZER 2020 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CHEVROLET BLAZER 2020 100000 POWER TRAIN
CADILLAC CT4 2020 100000 POWER TRAIN
CADILLAC CT4 2020 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CADILLAC CT5 2020 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CADILLAC CT5 2020 100000 POWER TRAIN
BUICK ENCORE GX 2020 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
BUICK ENCORE GX 2020 100000 POWER TRAIN
GMC SIERRA 2500 2020 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
GMC SIERRA 2500 2020 100000 POWER TRAIN
CHEVROLET SILVERADO 2500 2020 100000 POWER TRAIN
CHEVROLET SILVERADO 2500 2020 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CADILLAC XT4 2020 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CADILLAC XT4 2020 100000 POWER TRAIN
CADILLAC XT5 2020 100000 POWER TRAIN
CADILLAC XT5 2020 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CADILLAC XT6 2020 100000 POWER TRAIN
CADILLAC XT6 2020 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CADILLAC CT6 2019 100000 POWER TRAIN
CADILLAC CT6 2019 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
GMC SIERRA 1500 2019 100000 POWER TRAIN
GMC SIERRA 1500 2019 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CHEVROLET SILVERADO 1500 2019 100000 POWER TRAIN
CHEVROLET SILVERADO 1500 2019 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR
CADILLAC XT4 2019 100000 POWER TRAIN
CADILLAC XT4 2019 061700 ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR

Related BUICK Recalls

CampaignModelYearComponentSummary
REGAL 2013 SUSPENSION:REAR General Motors, LLC (GM) is recalling certain 2012–2013 Buick Regal Turbo and...
REGAL 2012 SUSPENSION:REAR General Motors, LLC (GM) is recalling certain 2012–2013 Buick Regal Turbo and...
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ENVISION 2026 EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER ... General Motors has decided that certain 2027 Chevrolet Bolt EV, 2025-2026 Cad...
VERANO 2014 AIR BAGS:SIDE/WINDOW General Motors, LLC (GM) is recalling certain 2014 Buick Verano and Chevrolet...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized BUICK dealer. Bring this bulletin ID (PIP5712B) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

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Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.

Back to All TSBs