Buick Cars & Trucks - Page 9 - Recent Questions, Troubleshooting & Support

Could be the CV Shaft

NO TOLD WHY THIS HUNT/??????? SCANS SHOW IT DTC FAILING? P03XX ? well on all cars, if present, and is here. called CKP (SAE std. name) it is in 1 of 4 places front end of crank shaft, NO center (BINGO FOR 4.6) or rear. (NO!)OR BEHIND FLYWHEEL/FLEX (NO)A PHOTO OR THE CRANKSHAFT PROVES THAT OUT INA 1 SECOND GLANCE.TONE WHELL DEAD CENTER. all are,AT the dealer for you car online sells it an shows where it is (GM) for sure. so does the service manual (SM) , by year. I AM READING SM TO YOU NOW ! 4.6l ONLY YUP IT IS BURIED DEEP , NOT FUN JOB AT ALL, AND I BET IT IS GOOD STEP1; REMOVE INTAKE MANIFOLD (28 STEPS IN THE SM , I WILL NOT POST THEM) STEP2 REMOVE #2A REALLY WILD DESIGN THIS IS NOW THIS: CAPTAIN OBVIOUS SAYS GET THE CAR SERVICED IN PRO SHOP.or learn to post a real problem first and did not.and last, GUE$$ing will be costly and for sure here and for sure down all wrong.

Hope this helps:

Question edited for a lot more clarity. Question moved to model category. 2 duplicated questions deleted. Just Refresh the page to see it! Lots of ways in the link, but I doubt they work. My advice is always "fix the problem, don't try and find a way around it". You need an auto electrician, or an auto locksmith. https://www.fixya.com/cars/r29887709-gm_passlock_security_system https://www.google.com/search?q=bypass+vats https://www.google.com/search?q=mobile+auto+electrician+near+me ..

Question edited for clarity. Question moved to model category. A 'Smoke Test' at a garage. They disconnect a hose and attach a smoke generator and under light pressure the smoke escapes where the leak is. The test takes about 2 hours. Here are some other ideas

Locate the coolant bleed valve on top of the thermostat bypass tube (see attachment from the Owners Manual). Follow instruction in the manual.

https://www.dezosmanuals.com/wp-content/uploads/2021/07/1994-Buick-Century.pdf

Greetings, Based on the description from the Advanced AutoParts website, you should check the engine for the sensor. I would use a picture of the sensor to guide you in locating it around the engine area of your Buick. The item looks like a magnifying glass with no glass with bronze colored piece that lays within a black circle. You'll see what I'm talking about when you run it's name in a search engine image search. Thank you.

MANY POSTERS HERE LIE. THEY GUESS FOR POINTS. SAD NO? MY ANSWERS ARE FOR USA CARS ONLY NOT THE GM BUICK EXPORT. NO ENGINE TOLD AT ALL. OF 3., 2.2L, 3.1 OR 3.3L??????? WHY ASK FOR PARTS THAT DO NOT EXIST. ? ASK HOW TO DIAGNOSE IT. ? BATTERY NOT DEAD OR WEAK. IS FIRST FUSE NOT BLOWN (ALL) KEY-SWITCH GOOD PRNDL SWITCH DEAD IN PARK AND OR NEUTRAL SHIFT TO NEUTRAL AND CRANK, AS THE USERS GUIDE TOLD YOU. 93 CENTURY SCHEMATIC FROM SM BOOK, USA AS JEFF SAID THERE IS NO RELAY. NO MATTER HOW MUCH YOU WANT ONE, 'IT IS NOT THERE" USE A VOLTMETER TO FIND THE POINT IF FAILURE FIRST IS HEAD LAMPS MUST WORK. SEE WHY FUSE LINK C BLOW KILLS IT ALL DEAD. BATTERY DEAD WEAK LAMPS GLOW DIM THEN KEYSWITCH TESTS GOOD. THEN PRNDL BAD (P AND N BOTH DEAD) THE STARTER CAN BE HOT WIRED KEY OFF. BATTERY 2 CABLES 4 LUGS NOT LOOSE OR RUSTY . 2 MAN TEST, USING VOLT METER CRANKING FINDS IT FAST. AND EASY

It is probably a bad connection on the OnStar antenna. It is that Shark Fin on the roof. https://www.google.com/search?q=2020+buick+envision+onstar+antenna Page 133 of the Owner Manual Multi-Band Antenna The roof antenna is for SiriusXM, OnStar, and GPS (Global Positioning System), depending on the equipped options. Keep clear of obstructions for clear reception. If the vehicle has a sunroof, and it is open, reception can also be affected. https://my.gm.ca/buick/en/content/dam/gmownercenter/gmna/GMCC/dynamic/2021/buick/envision/en/2021-buick-envision-owners-manual-english.pdf ..

OP CALL THE DEALER ASK THEM OF THE RECALL ONLY VIN WAS COMPLETED, NOBODY ELSE KNOWS THIS. JUST THEM A PURE BUICK THINK AND YES ABS NEEDS TO BE FULLY CHECKED OUT AND ALL BRAKES GOOD SEEMS BRAKES ARE BAD PADS. ROTORS, , AND OR CALIPERS. BAD. OR 1 ABS SENSOR GOT HIT (ROAD HAZARDS HAPPEN) NO BLIND PERSON IN TEXT BOX CAN GUESS. WORTH SNARF.