Service and repair manuals for 5 model years of the Cadillac CT4, 2020 to 2024. Each manual is matched to one exact year — the specifications and procedure sequences are the ones Cadillac published for that year's engine and trim, not values carried across the whole production run.
Engines across the range: 2.7L I4 — 166 cu in, DOHC, turbocharged · 2.0L I4 — 122 cu in, DOHC, turbocharged · 3.6L V6 — 217 cu in, DOHC, turbocharged.
Federal safety record, all years: 8 recalls, 42 owner complaints and 3,317 technical service bulletins are logged for the CT4. Refreshed 2026-08-21.
01 / Model yearsChoose your CT4 year
| Year | Price | Recalls | Engines | Trims | |
|---|---|---|---|---|---|
| 2024 | $49.99 | — | 2.7L I4; 3.6L V6; 2.0L I4 | V Sedan 4-Door · V Blackwing Sedan 4-Door · Sport Sedan 4-Door · Luxury Sedan 4-Door +1 | select |
| 2023 | $49.99 | 1 | 2.7L I4; 3.6L V6; 2.0L I4 | V Sedan 4-Door · V Blackwing Sedan 4-Door · Sport Sedan 4-Door · Luxury Sedan 4-Door +1 | details → |
| 2022 | $49.99 | 2 | 2.7L I4; 3.6L V6; 2.0L I4 | V Sedan 4-Door · V Blackwing Sedan 4-Door · Sport Sedan 4-Door · Luxury Sedan 4-Door +1 | details → |
| 2021 | $49.99 | 2 | 2.7L I4; 2.0L I4 | V Sedan 4-Door · Sport Sedan 4-Door · Luxury Sedan 4-Door · Premium Luxury Sedan 4-Door | details → |
| 2020 | $49.99 | 3 | 2.7L I4; 2.0L I4 | V Sedan 4-Door · Sport Sedan 4-Door · Luxury Sedan 4-Door · Premium Luxury Sedan 4-Door | details → |
02 / InsideSample pages
From the 2024 CT4 manual.
03 / ContentsWhat the manual covers
- Quick Lookups 846
- General Information 2,027
- Accessories & Equipment 11,139
- Heating, Ventilation & A/C (HVAC) 819
- Body & Frame 3,253
- Brakes 2,092
- Restraints 509
- Drivelines & Axles 397
- Steering 468
- Electrical 5,982
- Suspension 374
- Engine Mechanical 2,785
- Transmission 1,144
- Engine Performance 3,445
- Loosen 45
04 / Other yearsOther CT4 years
2024 Cadillac CT4 · $49.99 select →
Engines: 2.7L I4 — 166 cu in, DOHC, turbocharged; 3.6L V6 — 217 cu in, DOHC, turbocharged; 2.0L I4 — 122 cu in, DOHC, turbocharged. Trims: V Sedan 4-Door · V Blackwing Sedan 4-Door · Sport Sedan 4-Door · Luxury Sedan 4-Door · Premium Luxury Sedan 4-Door.
No recalls on federal record for the 2024 CT4. 9 complaints · 383 TSBs.
05 / OwnershipOwn it — don't rent it
| Option | What you pay | After a year |
|---|---|---|
| eManualStore CT4 manual | $49.99 once | Still yours |
| Per-vehicle online subscription | from $29 / year, renewing | Pay again or lose access |
| Library membership services | $33 / month, capped | $396 spent, nothing kept |
| Professional shop databases | $499–$2,388 / year | Renew or lose access |
Competitor figures as published on their sites, August 2026.
FAQQuestions about the CT4 manual
Which CT4 years does this manual cover?
Every year from 2020 to 2024 — 5 separate manuals, one per model year. Pick your year in the selector; the manual you receive is matched to that exact year, engine and trim.
Is this the OEM Cadillac CT4 manual or an aftermarket guide?
The OEM version. It carries the procedures, specifications, torque values and wiring diagrams Cadillac published for the CT4, organized by system — not a condensed aftermarket summary.
Does it include CT4 wiring diagrams?
Yes. Full wiring diagrams are part of every CT4 manual, alongside repair procedures, specifications and diagnostic information.
Does the manual cover CT4 recalls?
8 recalls are on federal record across the 2020–2024 CT4, listed by year below. The manual carries the manufacturer's diagnostic and repair procedures behind the systems involved; the recall repairs themselves are performed free by Cadillac dealers.
Why do some CT4 years cost more?
Every CT4 year is $49.99.
Is this a subscription?
No. One payment, and the manual is yours to keep — unlike per-vehicle subscriptions that renew every year.
How do I get the manual after purchase?
It is a digital manual — nothing ships. Access details arrive by email right after checkout, and you can use it on any device.
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