INTRODUCTION
Use this article to quickly find specifications related to servicing and on-vehicle adjustments. Use this article for quick reference when you are familiar with proper adjustment procedures and only need a specification.
CAPACITIES
| Application | Cold Crank Amps @ 0°F (-18°C) | Reserve Minutes |
|---|
| 3.1L (VIN T) | 630 | 90 |
| 3.3L (VIN N) | 630 | 90 |
| 3.4L (VIN X) | 690 | 90 |
| 3.8L (VIN C & L) |
| Standard | 630 | 90 |
| Heavy Duty | 770 | 115 |
| Application | (1) Quantity - Qts. (L) |
|---|
| Crankcase (2) |
| 3.1L (VIN T) | 4.0 (3.8) |
| 3.3L (VIN N) | 4.0 (3.8) |
| 3.4L (VIN X) | 4.0 (3.8) |
| 3.8L (VIN C & L) | 4.0 (3.8) |
| Cooling System (Includes Heater) |
| 3.1L (VIN T) | 14.0 (13.2) |
| 3.3L (VIN N) | 13.0 (12.3) |
| 3.4L (VIN X) | 13.0 (12.3) |
| 3.8L (VIN C & L) | 13.0 (12.3) |
| Automatic Transaxle/Transmission (3) (4) |
| 3.1L (VIN T) |
| 3T40 | 7.0 (6.6) |
| 4L60 | 6.0 (5.7) |
| 3.3L (VIN N) |
| 3T40 | 7.0 (6.6) |
| 4T60 | 6.0 (5.7) |
| 3.4L (VIN X) |
| 3T40 | 7.0 (6.6) |
| 4L60 | 6.0 (5.7) |
| 3.8L (VIN C & L) | 6.0 (5.7) |
| Manual Transaxle/Transmission |
| 3.1L (VIN T) |
| "F" Body | (4) 3.0 (2.8) |
| All Others | (5) 1.9 (1.8) |
| 3.4 (VIN X) | (5) 2.0 (1.9) |
| (1) Fluid capacities listed are approximate. Always fill to FULL mark. (2) Does not include filter capacity. (3) Drain and refill capacity only. Does not include torque converter. (4) Dexron-II (5) Synchromesh Transmission Fluid (GM 12345349). |
| (1) | Fluid capacities listed are approximate. Always fill to FULL mark. |
| (2) | Does not include filter capacity. |
| (3) | Drain and refill capacity only. Does not include torque converter. |
| (5) | Synchromesh Transmission Fluid (GM 12345349). |
SERVICE INTERVALS & SPECIFICATIONS
| Component | Miles |
|---|
| Oil & Filter | 7,500 |
| Air Filter | 30,000 |
| Cam Timing Belt | (1) |
| Coolant | 30,000 |
| Fuel Filter | (1) |
| Spark Plugs | 30,000 |
| (1) No scheduled replacement interval given by manufacturer. Check and replace as necessary. |
| (1) | No scheduled replacement interval given by manufacturer. Check and replace as necessary. |
| Application | (1) Tension - Lbs. (kg) |
|---|
| Serpentine Belt (2) |
| 3.1L (VIN T) |
| "F" Body |
| With A/C | 85-110 (39-50) |
| Without A/C | 95-140 (43-64) |
| All Others | 50-70 (23-32) |
| 3.4L (VIN X) | (3) |
| 3.3L (VIN N) | (3) |
| 3.8L (VIN C & L) | (3) |
| (1) Specifications are for new belts only. Measure tension with belt tension gauge. (2) Engines with serpentine belts have automatic tensioner. If tension reading is not as specified, check belt's operating length or tensioner's operating range. Replace belt as necessary. (3) Information is not available from manufacturer. |
| (1) | Specifications are for new belts only. Measure tension with belt tension gauge. |
| (2) | Engines with serpentine belts have automatic tensioner. If tension reading is not as specified, check belt's operating length or tensioner's operating range. Replace belt as necessary. |
| (3) | Information is not available from manufacturer. |
ENGINE COMPRESSION
Check engine compression under the following conditions: engine at normal operating temperature and specified cranking speed, all spark plugs removed, and throttle wide open.
| Application | Specification |
|---|
| Compression Ratio |
| 3.1L (VIN T) |
| "F" Body | 8.5:1 |
| All Others | 8.8:1 |
| 3.3L (VIN N) | 9.0:1 |
| 3.4L (VIN X) | 9.25-9.50:1 |
| 3.8L (VIN C & L) | 8.5:1 |
| Normal Compression Pressure | (1) |
| Minimum Compression Pressure | (1) |
| (1) The lowest compression reading should not be less than 70 percent of the highest compression reading. No cylinder compression reading should be less than 100 psi (7 kg/cm 2 ). |
| (1) | The lowest compression reading should not be less than 70 percent of the highest compression reading. No cylinder compression reading should be less than 100 psi (7 kg/cm 2 ). |
COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
Note. All models are equipped with hydraulic lifters. No adjustment is required.
IGNITION COIL
| Application | Ohms |
|---|
| All Models With HEI-EST | 500-1500 |
HIGH TENSION WIRE RESISTANCE
| Application (1) | Ohms |
|---|
| All Models | 30,000 Maximum |
| (1) Not applicable to direct ignition systems. |
| (1) | Not applicable to direct ignition systems. |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | AC Spark Plug |
|---|
| 3.1L (VIN T) |
| "F" Body | R43TSK |
| "J" Body | R44LTSM |
| All Others | R43LTSE |
| 3.3L (VIN N) | R45LTS6 |
| 3.4L (VIN X) | R42LTSM |
| 3.8L (VIN C & L) | R44LTS6 |
| Application | Gap - In. (mm) | Torque - Ft. Lbs. (N.m) |
|---|
| 3.1L (VIN T) | .045 (1.14) | 15 (20) |
| 3.3L (VIN N) | .060 (1.52) | 20 (27) |
| 3.4L (VIN X) | .045 (1.14) | 11 (15) |
| 3.8L (VIN C & L) | .060 (1.52) | 20 (27) |
SPARK PLUG SPECIFICATIONS
Firing Order (3.1L - VIN T - "F" Bodies). Scheme 6
Scheme 6: Firing Order (3.1L - VIN T - "F" Bodies)
Firing Order (3.1L - VIN T - All Others; 3.4L - VIN X). Scheme 7
Scheme 7: Firing Order (3.1L - VIN T - All Others; 3.4L - VIN X)
Firing Order (3.3L - VIN N). Scheme 8
Scheme 8: Firing Order (3.3L - VIN N)
Firing Order (3.8L - "3800" VIN C & VIN L). Scheme 9
Scheme 9: Firing Order (3.8L - "3800" VIN C & VIN L)
IGNITION TIMING
| Application | Man. Trans. | Auto. Trans. |
|---|
| 3.1L (VIN T) |
| "F" Body | 10 @ Idle | 10 @ Idle |
| All Others | (1) | (1) |
| 3.4L (VIN X) | (1) | (1) |
| 3.3L (VIN N) | (1) | (1) |
| 3.8L (VIN C & L) | (1) | (1) |
| (1) Not adjustable. |
FUEL PUMP
| Application | Psi (kg/cm 2 ) |
|---|
| 3.1L (VIN T) | 41-47 (2.88-3.30) |
| 3.3L (VIN N) | 41-47 (2.88-3.30) |
| 3.4L (VIN X) | 32-47 (2.25-3.30) |
| 3.8L (VIN C & L) | 40-47 (2.81-3.30) |
INJECTOR RESISTANCE
| Application | Ohms |
|---|
| 3.1L (VIN T) | 8-12 |
| 3.3L (VIN N) | 11.8-12.6 |
| 3.4L (VIN X) | 12.0-12.4 |
| 3.8L (VIN C & L) | Approx. 14.5 @ 68°F (20°C) |
| (1) Injector resistance specification is at 140°F (60°C). Except 3.8L. |
| (1) | Injector resistance specification is at 140°F (60°C). Except 3.8L. |
INJECTOR RESISTANCE SPECIFICATIONS (1)
IDLE SPEED & MIXTURE
Note. Idle mixture is controlled by the Electronic Control Module (ECM). Idle mixture adjustment is neither required nor possible on fuel-injected models.
THROTTLE POSITION SENSOR (TPS)
Note. For further testing, refer to appropriate G - TESTS W/ CODES article in this section.
| Application | (1) Volts |
|---|
| 3.1L (VIN T) |
| "A" & "J" Body | (2) .29-4.8 |
| All Others | (2) .50-4.8 |
| 3.3L (VIN N) | .33-.46 |
| 3.4L (VIN X) | (2) .50-4.8 |
| 3.8L (VIN C & L) | .33-.46 |
| (1) At idle RPM. (2) Not adjustable. |
