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Specifications
| Engine Specifications | ||
| Engine | Vortec 4800 V8 | Vortec 5300 V8 |
| RPO | LR4 | LM7 |
| Displacement (cu. in./liters) | 292/4.8 | 325/5.3 |
| Bore x Stroke (in.) | 3.78 x 3.27 | 3.78 x 3.62 |
| (mm) | 96.0 x 83.0 | 96.0 x 92.0 |
| Compression ratio | 9.5:1 | 9.5:1 |
| Cylinder block material | cast-iron | cast-iron |
| Cylinder head material | cast-aluminum | cast-aluminum |
| Valvetrain configuration | OHV | OHV |
| Valves per cylinder | 2 | 2 |
| Induction system | SFI | SFI |
| Ignition | direct | direct |
| Lifters | hydraulic roller | hydraulic roller |
| Cam drive | chain | chain |
| Coolant capacity (quarts/liters) | – | – |
| Base with air conditioning | 14.4/13.6 | – |
| LS and LT | – | 15.8/15.0 |
| LS and LT with third seat | – | 16.8/15.9 |
| Oil capacity (quarts/liters) | 6.0/5.7 | 6.0/5.7 |
| Alternator (amps) | 130 | 130 |
| Battery (SAE rating, cca) | 600 | 600 |
| Recommended unleaded fuel | 87 octane | 87 octane |
| Maximum engine speed (RPM) | 5900 | 5900 |
| Horsepower/kW (@ RPM) | 275/205 @ 5200 | 285/212 @ 5200 |
| Torque/N-m (lbs.-ft. @ RPM) | 290/393 @ 4000 | 325/441 @ 4000 |
|
Transmission Specifications |
|
| Series | 1500 |
| Type | 4-speed automatic |
| RPO | 4L60-E (M30) |
| First gear | 3.06 |
| Second gear | 1.63 |
| Third gear | 1.00 |
| Fourth gear | 0.70 |
| Reverse gear | 2.29 |
| Fluid capacity (quarts/liters) | 11.4/10.8 |
| Case material | cast-aluminum |
| Converter size (in./mm) | 11.8/300 |
| Case material | aluminum |
| Steering Specifications | Tahoe 2WD | Tahoe 4x4 |
| Type (power) | recirculating ball | Speed-sensitive recirculating ball |
| Ratio | 14.1:1 | 12.7:1 |
| Turning diameter (curb-to-curb ft.) | 38.3/11.7 | 38.3/11.7 |
|
Brake Specifications |
||
| Type (power) | 4-wheel disc | |
| Antilock system | Standard 4-wheel | |
 |
||
| Front | U.S. Standard | Metric |
| Rotor size | 12.01 x 1.14 in. |
305 x 29 mm |
| Swept area | 213.6 sq. in. | 1378.1 sq. cm. |
|
||
| Rear | U.S. Standard |
Metric (mm) |
| Rotor size | 13.00 x 1.18in. | 330 x 30 |
| Swept area | 223.5 sq. in. | 1440 sq. cm. |
| Fuel Economy |
Estimated MPG City/Highway (1) |
|
Vortec 4800 V8 |
|
|
– 2WD |
15/20 |
| – 4x4 | 14/17 |
|
|
| Vortec 5300 V8 | |
| – 2WD | 14/18 |
| – 4x4 | 14/17 |
1 Based on GM testing. Offical EPA numbers not yet available.