What transmission is in a 91 Chevy Caprice?
In brief, the 1991 Caprice uses a four‑speed automatic transmission, most commonly the electronically controlled 4L60‑E behind its V8 engines.
Beyond that simple answer, the Caprice of that year sits on GM’s full‑size rear‑wheel‑drive platform and typically paired its big V8s with a robust automatic transmission designed for steady highway cruising and city driving. While parts and exact configurations can vary by trim and market, the 4L60‑E designation is the standard reference for most North American 1991 Caprice models.
Transmission basics in the 1991 Caprice
The 4L60‑E is a four‑speed automatic that uses electronic controls to manage shift timing via the vehicle’s Powertrain Control Module (PCM). It is the evolution of GM’s earlier 700R4 family and was widely used behind V8 engines in GM cars of that era. This setup provides an overdrive fourth gear for improved fuel economy on the highway and a traditional automatic driving feel.
Here are the core details you should know about the transmission used in the 1991 Caprice:
- Transmission type: four‑speed automatic
- Model designation: 4L60‑E (electronic control)
- Drive configuration: rear‑wheel drive
- Typical engine pairing: V8 options such as a 5.0L (305) or 5.7L (350) in North American models
- Foundation: mounted to the back of the engine and connected to the driveshaft via the transmission output
Understanding these components helps with maintenance planning and parts compatibility when rebuilding or repairing the unit.
How to verify which transmission you have
If you’re shopping for parts or diagnosing issues, confirming the exact transmission family is useful. Use these steps to identify the unit in your Caprice:
- Inspect the transmission pan or a tag on the side of the case for a model code (look for 4L60‑E or a GM family code).
- Consult the vehicle’s build sheet or window sticker to confirm the factory transmission option.
- Look for electronic wiring and a PCM connection harness that indicates an electronically controlled transmission (typical of the 4L60‑E).
- Compare the transmission housing shape and bellhousing pattern to GM reference guides if you have access to manual diagrams.
If in doubt, a professional technician or a trusted parts catalog can cross‑reference the VIN, build data, and casting codes to confirm the exact transmission installed in your car.
Maintenance and common issues
Regular maintenance helps extend the life of the 4L60‑E in a 1991 Caprice. The following points cover routine care and typical problems you may encounter:
- Fluid and filter maintenance: perform transmission fluid checks and replace the filter as part of routine service, following GM’s guidelines for this era.
- Common symptoms: delayed engagement, harsh or slipping shifts, and occasional leaks at the pan or seals can indicate wear or fluid issues.
- Solenoids and PCM: electronic controls rely on solenoids and the PCM; electrical faults can affect shift timing and may require diagnostics.
- Pan and gasket health: inspect for leaks around the pan gasket and oil cooler lines, which are common wear points on aging units.
Addressing issues early with proper fluid maintenance, filter replacement, and, if needed, solenoid or valve body service can keep the 4L60‑E running smoothly in a classic Caprice.
Summary
The 1991 Chevy Caprice is typically equipped with a four‑speed automatic transmission—the electronically controlled 4L60‑E—paired with its V8 engines for a balanced blend of power and highway efficiency. Identifying the exact transmission involves checking codes on the case or consulting the build sheet, and ongoing care centers on standard ATF maintenance, leak prevention, and diagnostic checks for electronic controls.
What transmission does a 1992 Chevy Caprice have?
1992 Chevrolet Caprice Specs, Features & Options
| Drivetrain | |
|---|---|
| RWD | RWD |
| Transmission Type | |
| Automatic | Automatic |
What motor is in a 1991 Chevy Caprice?
Engine
| Base engine size | 5.0 L |
|---|---|
| Cylinders | V8 |
| Base engine type | Gas |
What kind of transmission is in a 1991 Chevy Caprice?
Moveras – THM700-R4 – Automatic Transmission (Part No. M00654)
How much is a 1991 Chevy Caprice worth?
1991 Chevrolet Caprice Value - $1,130-$5,150 | Edmunds.
