GMC Jimmy: which version to buy, and why the numbers split this way
If you are choosing a GMC Jimmy, the data set is not a long list of engines. It is two generations, two displacements, and a handful of drivetrain and tank combinations. The 3 generation (1991-01-01 to 2005-12-31) is a 3-door SUV with five 4.3 gasoline versions at 192 hp. The 2 generation (1973-01-01 to 1991-01-31) is the same body type with four 5.7 gasoline versions at 175 hp.
If you are choosing a GMC Jimmy, the data set is not a long list of engines. It is two generations, two displacements, and a handful of drivetrain and tank combinations. The 3 generation (1991-01-01 to 2005-12-31) is a 3-door SUV with five 4.3 gasoline versions at 192 hp. The 2 generation (1973-01-01 to 1991-01-31) is the same body type with four 5.7 gasoline versions at 175 hp. Horsepower, torque, and 0–100 figures below are only those measured in this catalogue. Fuel consumption, CO2, eco class, ground clearance, and wheel size are not measured on every version listed.
Searches for a 2026, 2027, or 2029 Jimmy, a 1970 Jimmy, or a concept are outside this data. Specs that exist here start at 1973-01-01 and stop at 2005-12-31.
Which generation to buy: 2 generation vs 3 generation
2 generation (1973-01-01–1991-01-31): 4 versions, all 5735 cc, 175 hp (128 kW) at 4000 rpm, 373 Nm at 2400 rpm, Gasoline, 8 cylinders, V-shaped, 2 valves per cylinder, Front, longitudinal, Distributed injection (multi-point), fuel 92. Boost, compression, bore × stroke, 0–100, top speed, tank, CO2, eco class, gross weight, clearance, wheels, suspension, and brakes are not measured.
3 generation (1991-01-01–2005-12-31): 5 versions, all 4300 cc, 192 hp (141 kW) at 4400 rpm, 339 Nm at 2800 rpm, Gasoline, 6 cylinders, V-shaped, 2 valves per cylinder, boost No, Front, longitudinal, Distributed injection (multi-point), compression 9.2, bore × stroke 101.6 × 88.4, fuel 95. Independent, spring suspension front and rear; disc brakes front and rear. Fuel use, CO2, eco class, clearance, and wheels are not measured.
Arithmetic on those two engines:
| Measure | 2 generation 5.7 | 3 generation 4.3 | Difference |
|---|---|---|---|
| Displacement | 5735 cc | 4300 cc | 3 generation is 1435 cc smaller |
| Power | 175 hp / 128 kW | 192 hp / 141 kW | 3 generation is +17 hp / +13 kW |
| Power per litre | 175 ÷ 5.735 ≈ 30.5 hp/L | 192 ÷ 4.3 ≈ 44.7 hp/L | 3 generation ≈ +14.2 hp/L |
| Torque | 373 Nm @ 2400 | 339 Nm @ 2800 | 2 generation is +34 Nm, 400 rpm earlier |
| Torque per litre | 373 ÷ 5.735 ≈ 65.0 Nm/L | 339 ÷ 4.3 ≈ 78.8 Nm/L | 3 generation denser despite less peak torque |
| Peak power rpm | 4000 | 4400 | 3 generation +400 rpm |
Buy 2 generation if the measured priority is peak torque (373 Nm) and the 5.7 engine. Buy 3 generation if the measured priority is higher horsepower (192 vs 175), higher power per litre, a measured 0–100 and top speed, a measured tank, measured kerb and gross mass, and a chassis with measured Independent, spring suspension and disc brakes.
A 2000, 2001, or 2005 Jimmy in this catalogue is a 3 generation 4.3. A 1991 calendar year can sit on either side of the 1991-01-01 / 1991-01-31 hand-off: 2 generation stops 1991-01-31; 3 generation starts 1991-01-01.
GMC Jimmy engine options: every version name as in the database
All nine versions keep their database names. Same-name rows are split by drive, tank, or mass.
3 generation — 4.3 AT and 4.3 MT (192 hp)
| Version | hp / kW @ rpm | Nm @ rpm | cc | Fuel | Cylinders / layout | Boost | Gearbox | Drive |
|---|---|---|---|---|---|---|---|---|
| 4.3 AT (RWD, 72 L tank) | 192 / 141 @ 4400 | 339 @ 2800 | 4300 | Gasoline, 95 | 6, V-shaped, 2 valves | No | Automatic, 4 | RWD |
| 4.3 AT (AWD, 72 L tank) | 192 / 141 @ 4400 | 339 @ 2800 | 4300 | Gasoline, 95 | 6, V-shaped, 2 valves | No | Automatic, 4 | AWD |
| 4.3 AT (RWD, 68 L tank) | 192 / 141 @ 4400 | 339 @ 2800 | 4300 | Gasoline, 95 | 6, V-shaped, 2 valves | No | Automatic, 4 | RWD |
| 4.3 AT (AWD, 68 L tank) | 192 / 141 @ 4400 | 339 @ 2800 | 4300 | Gasoline, 95 | 6, V-shaped, 2 valves | No | Automatic, 4 | AWD |
| 4.3 MT | 192 / 141 @ 4400 | 339 @ 2800 | 4300 | Gasoline, 95 | 6, V-shaped, 2 valves | No | Manual, 5 | RWD |
2 generation — 5.7 MT 4WD, 5.7 MT, 5.7 AT (175 hp)
| Version | hp / kW @ rpm | Nm @ rpm | cc | Fuel | Cylinders / layout | Boost | Gearbox | Drive |
|---|---|---|---|---|---|---|---|---|
| 5.7 MT 4WD | 175 / 128 @ 4000 | 373 @ 2400 | 5735 | Gasoline, 92 | 8, V-shaped, 2 valves | not measured | Manual, 3 | AWD |
| 5.7 MT | 175 / 128 @ 4000 | 373 @ 2400 | 5735 | Gasoline, 92 | 8, V-shaped, 2 valves | not measured | Manual, 3 | RWD |
| 5.7 AT (RWD) | 175 / 128 @ 4000 | 373 @ 2400 | 5735 | Gasoline, 92 | 8, V-shaped, 2 valves | not measured | Automatic, 4 | RWD |
| 5.7 AT (AWD) | 175 / 128 @ 4000 | 373 @ 2400 | 5735 | Gasoline, 92 | 8, V-shaped, 2 valves | not measured | Automatic, 4 | AWD |
There is no second horsepower figure on any same-named pair: every 4.3 AT is 192 hp; both 5.7 AT rows are 175 hp. The split is drivetrain, tank, and mass.
Engine size in this catalogue is only 4300 cc or 5735 cc. Engine-swap talk is not in the data.
GMC Jimmy horsepower vs weight: kg per hp
| Version | Kerb, kg | hp | kg/hp |
|---|---|---|---|
| 5.7 MT 4WD | 1474 | 175 | 1474 ÷ 175 ≈ 8.42 |
| 5.7 AT (AWD) | 1474 | 175 | ≈ 8.42 |
| 4.3 AT (RWD, 72 L or 68 L) | 1635 | 192 | 1635 ÷ 192 ≈ 8.52 |
| 5.7 MT (RWD) | 1632 | 175 | 1632 ÷ 175 ≈ 9.33 |
| 5.7 AT (RWD) | 1632 | 175 | ≈ 9.33 |
| 4.3 AT (AWD, 72 L or 68 L) | 1785 | 192 | 1785 ÷ 192 ≈ 9.30 |
| 4.3 MT | 1973 | 192 | 1973 ÷ 192 ≈ 10.28 |
The lightest measured kerb is 1474 kg on 5.7 MT 4WD and 5.7 AT (AWD). Those two also have the lowest kg/hp (≈ 8.42). The 4.3 AT RWD pair is next (≈ 8.52 kg/hp) despite more mass, because 192 hp offsets the extra 161 kg versus 1474 kg (1635 − 1474 = 161).
AWD on 3 generation is not free in mass: 4.3 AT AWD is 1785 − 1635 = 150 kg heavier than 4.3 AT RWD, and kg/hp rises from ≈ 8.52 to ≈ 9.30.
4.3 MT is the heaviest: 1973 kg kerb, 2503 kg gross. Versus 4.3 AT RWD that is +338 kg kerb and +485 kg gross (2503 − 2018). It is the only 5-speed Manual in 3 generation, and the only version with a 75 L tank.
On 2 generation, AWD is the lighter pair: 5.7 MT 4WD and 5.7 AT (AWD) are 1474 kg; 5.7 MT and 5.7 AT (RWD) are 1632 kg — 158 kg more. Gross weight on all four is not measured.
Performance: 0–100 and top speed (what AWD costs in seconds)
Only 3 generation Automatics have a measured 0–100.
| Version | 0–100, s | Top speed, km/h |
|---|---|---|
| 4.3 AT RWD (72 L) | 13.1 | 180 |
| 4.3 AT RWD (68 L) | 13.1 | 180 |
| 4.3 AT AWD (72 L) | 13.8 | 175 |
| 4.3 AT AWD (68 L) | 13.8 | 175 |
| 4.3 MT | not measured | 180 |
| 5.7 MT 4WD, 5.7 MT, both 5.7 AT | not measured | not measured |
AWD versus RWD on the same 4.3 AT engine: +0.7 s to 100 km/h (13.8 − 13.1) and −5 km/h top speed (180 − 175), with +150 kg kerb and +182 kg gross (2200 − 2018). The 68 L versus 72 L tank does not change 0–100 or top speed on matching drive.
4.3 MT matches RWD Automatic top speed at 180 km/h; its 0–100 is not measured, so it cannot be ranked on acceleration.
2 generation 0–100 and top speed are not measured on every version. A 175 hp / 373 Nm comparison with 192 hp / 339 Nm cannot be turned into a sprint ranking from this catalogue.
GMC Jimmy mpg, fuel economy, mileage
City, highway, mixed consumption, CO2, and eco class are not measured on all nine versions. A 2000 or 2001 mpg figure is not in the data. Fuel grade is measured: 92 on every 2 generation 5.7, 95 on every 3 generation 4.3.
Tank is measured only on 3 generation:
- 4.3 AT RWD or AWD: 72 L or 68 L (4 L less on the 68 L pair; 68 ÷ 72 ≈ 94.4% of the larger tank).
- 4.3 MT: 75 L (3 L more than 72 L, 7 L more than 68 L).
2 generation tank is not measured.
Dimensions and weight: kerb, gross, tank, clearance
Ground clearance and wheels are not measured on all versions. Body type on both generations is SUV 3-doors.
| Version | Kerb, kg | Gross, kg | Tank, L | Clearance | Wheels |
|---|---|---|---|---|---|
| 4.3 AT RWD, 72 L | 1635 | 2018 | 72 | not measured | not measured |
| 4.3 AT AWD, 72 L | 1785 | 2200 | 72 | not measured | not measured |
| 4.3 AT RWD, 68 L | 1635 | 2018 | 68 | not measured | not measured |
| 4.3 AT AWD, 68 L | 1785 | 2200 | 68 | not measured | not measured |
| 4.3 MT | 1973 | 2503 | 75 | not measured | not measured |
| 5.7 MT 4WD | 1474 | not measured | not measured | not measured | not measured |
| 5.7 MT | 1632 | not measured | not measured | not measured | not measured |
| 5.7 AT RWD | 1632 | not measured | not measured | not measured | not measured |
| 5.7 AT AWD | 1474 | not measured | not measured | not measured | not measured |
Payload arithmetic where both masses exist:
- 4.3 AT RWD: 2018 − 1635 = 383 kg
- 4.3 AT AWD: 2200 − 1785 = 415 kg (32 kg more payload than RWD Automatic)
- 4.3 MT: 2503 − 1973 = 530 kg (147 kg more than RWD Automatic; 115 kg more than AWD Automatic)
2 generation payload cannot be calculated: gross is not measured.
Which version to choose
Want the highest measured horsepower and a timed 0–100. Stay in 3 generation. Choose 4.3 AT RWD (72 L or 68 L): 192 hp, 13.1 s, 180 km/h, 1635 kg, ≈ 8.52 kg/hp. The 72 L tank versus 68 L is the only measured difference between those two RWD Automatics.
Want AWD on the later generation. Choose 4.3 AT AWD (72 L or 68 L): same 192 hp, 13.8 s, 175 km/h, 1785 kg. Versus RWD Automatic you give 0.7 s, 5 km/h, and 150 kg; you gain AWD and 32 kg more payload (415 vs 383). Pick 72 L if tank volume matters; 68 L if it does not.
Want a Manual in 3 generation. Only 4.3 MT: Manual 5, RWD, 192 hp, 180 km/h, 75 L, 1973 / 2503 kg. 0–100 not measured. It is the heaviest kerb and the highest kg/hp (≈ 10.28) in the whole model list, and the largest measured tank and payload (530 kg).
Want peak torque and the 5.7 engine. Stay in 2 generation. All four share 175 hp and 373 Nm.
- Lightest AWD: 5.7 MT 4WD or 5.7 AT (AWD) at 1474 kg, ≈ 8.42 kg/hp. Gearbox split: Manual 3 versus Automatic 4.
- RWD: 5.7 MT or 5.7 AT (RWD) at 1632 kg. Same gearbox split.
2 generation does not have a measured 0–100, top speed, tank, or gross weight, so it cannot win a sprint, mpg, or payload comparison on this sheet.
Do not choose on mpg. Mileage is not measured.
Do not choose on a 2026–2029 or 1970 listing. Those years are not in the production window of this data (1973-01-01 through 2005-12-31).
Short map: 4.3 AT RWD for the fastest measured 0–100 at 192 hp; 4.3 AT AWD if drive layout outweighs 0.7 s and 150 kg; 4.3 MT if the 5-speed Manual and 75 L tank outweigh the extra 338 kg versus RWD Automatic; 5.7 MT 4WD or 5.7 AT (AWD) if 373 Nm and the lightest kerb (1474 kg) matter more than the missing performance and tank figures.