INTRODUCTION
Use this article to quickly find specifications related to servicing and on-vehicle adjustments. This is a quick-reference article to use when you are familiar with proper adjustment procedures and only need a specification.
FLUID CAPACITY (CRANKCASE)
| Application | (2) Quantity - Qts. (L) |
|---|
| All Engines | 4.5 (4.3) |
| (1) Fluid capacities listed are approximate. Always fill to FULL mark. (2) Includes oil filter capacity. |
| (1) | Fluid capacities listed are approximate. Always fill to FULL mark. |
| (2) | Includes oil filter capacity. |
FLUID CAPACITY (CRANKCASE) (1)
FLUID CAPACITY (COOLING SYSTEM)
| Application | (2) Quantity - Qts. (L) |
|---|
| 3.1L |
| Century | 11.6 (10.9) |
| Grand Prix | 11.0 (10.4) |
| 3.4L |
| Monte Carlo | 11.3 (10.7) |
| 3.8L |
| Century, Regal | 12.3 (11.6) |
| Grand Prix | 11.2 (10.6) |
| Impala & Monte Carlo | 11.7 (11.0) |
| (1) Fluid capacities listed are approximate. Always fill to FULL mark. Use 50/50 mixture of clean, drinkable water and use only DEX-COOL® Coolant. (2) Includes heater. |
| (1) | Fluid capacities listed are approximate. Always fill to FULL mark. Use 50/50 mixture of clean, drinkable water and use only DEX-COOL® Coolant. |
FLUID CAPACITY (COOLING SYSTEM) (1)
FLUID CAPACITY (AUTOMATIC TRANSAXLE)
| Application | (2) Quantity - Qts. (L) |
|---|
| All Models |
| Pan Removal | 7.4 (7.0) |
| Complete Overhaul | 10 (9.5) |
| Dry | 13.4 (12.7) |
| (1) Fluid capacities listed are approximate. Always fill to FULL mark. (2) Unless otherwise specified, use Dexron-III® transmission fluid. |
| (1) | Fluid capacities listed are approximate. Always fill to FULL mark. |
| (2) | Unless otherwise specified, use Dexron-III® transmission fluid. |
FLUID CAPACITY (AUTOMATIC TRANSAXLE) (1)
FLUID CAPACITY (POWER STEERING)
| Application | (2) Quantity - Pts. (L) |
|---|
| All Models | 1.5 (0.7) |
| (1) Fluid capacities listed are approximate. (2) Always fill to FULL mark. Use GM Power Steering Fluid GM P/N 1052884 (Canadian P/N 993294) or equivalent. |
| (1) | Fluid capacities listed are approximate. |
| (2) | Always fill to FULL mark. Use GM Power Steering Fluid GM P/N 1052884 (Canadian P/N 993294) or equivalent. |
FLUID CAPACITY (POWER STEERING) (1)
SERVICE INTERVALS & SPECIFICATIONS
| Component | Miles |
|---|
| Air Filter | (1) 30,000 |
| Accessory Drive Belt | (2) |
| Automatic Transaxle Fluid | (3) |
| Engine Coolant (4) | (5) |
| Fuel Filter | (6) |
| Oil & Filter | (7) |
| Spark Plugs | 100,000 |
| Supercharger Oil | (8) |
| (1) Inspect every 15,000, replace as necessary. (2) Check and replace as necessary. (3) Under normal service conditions, replace at 100,000 miles. If used under severe service conditions, replace every 50,000 miles. (4) Use only DEX-COOL® coolant or equivalent silicate-free coolant. (5) Replace at 60 months or 150,000 miles, whichever occurs first. (6) There is no service interval for fuel filter replacement. Only replace the fuel filter if the filter is restricted. Inspect the fuel tank internally and clean the fuel tank if a restricted fuel filter is found. (7) Replace as indicated by GM Oil Life System™ monitor or every 12 months, whichever occurs first. Reset monitor. If system is reset accidentally or not functional, change oil every 3,000 miles or 3 months from last oil change, whichever occurs first. (8) Check supercharger oil every 30,000 miles or every 36 months, whichever occurs first. |
| (1) | Inspect every 15,000, replace as necessary. |
| (2) | Check and replace as necessary. |
| (3) | Under normal service conditions, replace at 100,000 miles. If used under severe service conditions, replace every 50,000 miles. |
| (4) | Use only DEX-COOL® coolant or equivalent silicate-free coolant. |
| (5) | Replace at 60 months or 150,000 miles, whichever occurs first. |
| (6) | There is no service interval for fuel filter replacement. Only replace the fuel filter if the filter is restricted. Inspect the fuel tank internally and clean the fuel tank if a restricted fuel filter is found. |
| (7) | Replace as indicated by GM Oil Life System™ monitor or every 12 months, whichever occurs first. Reset monitor. If system is reset accidentally or not functional, change oil every 3,000 miles or 3 months from last oil change, whichever occurs first. |
| (8) | Check supercharger oil every 30,000 miles or every 36 months, whichever occurs first. |
BELT ADJUSTMENT
Adjustment of serpentine belt is not necessary. Belt tension is maintained by spring-tensioned idler pulley (some equipped with belt wear indicator).
ENGINE COMPRESSION
Check engine compression with engine at normal operating temperature, all spark plugs removed and throttle wide open.
| Application | Specification |
|---|
| Normal Compression Pressure | (1) |
| Minimum Compression Pressure | (1) |
| (1) Lowest compression reading should not be less than 70 percent of highest compression reading. No cylinder compression reading should be less than 100 psi (690 kPa) at 4 compression strokes. |
| (1) | Lowest compression reading should not be less than 70 percent of highest compression reading. No cylinder compression reading should be less than 100 psi (690 kPa) at 4 compression strokes. |
ENGINE COMPRESSION SPECIFICATIONS
VALVE CLEARANCE
All engines are equipped with hydraulic lifters. Adjustment is not required.
HIGH TENSION WIRE RESISTANCE
| Application | Specification - Ohms |
|---|
| 3.1L | 3000 Per Ft. |
| 3.4L |
| Except Monte Carlo (Police) | 3000 Per Ft. |
| Monte Carlo (Police) | 600 Per Ft. |
| 3.8L |
| Except Police | 3000 Per Ft. |
| Police | 600 Per Ft. |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | Spark Plug Type | Spark Plug No. |
|---|
| 3.1L & 3.4L | AC | 41-940 |
| 3.8L | AC | 41-921 |
| Application | Gap - In. (mm) | Torque - Ft. Lbs. (N.m) |
|---|
| All Engines | .060 (1.52) | 11 (15) |
SPARK PLUG SPECIFICATIONS
FIRING ORDER
Scheme 1
Scheme 1: Firing Order (3.1L & 3.4L)
Scheme 2
Scheme 2: Firing Order (3.8L)
IGNITION TIMING
Note. All models are equipped with an electronic computer-controlled ignition system. Timing is not adjustable.
FUEL PUMP
| Application | (1) KOEO psi (kPa) |
|---|
| 3.1L & 3.4L | 52-59 (359-407) |
| 3.8L |
| VIN K (2) | 53-59 (365-407) |
| VIN 1 (2) | 48-54 (331-372) |
| (1) KOEO is ignition key ON and engine OFF. (2) Eighth VIN character. |
| (1) | KOEO is ignition key ON and engine OFF. |
INJECTOR RESISTANCE
| Application | (1) Ohms |
|---|
| All Engines | 11.0-14.0 |
| (1) Unless otherwise specified, injector resistance specification is at 50-90°F (10-32°C). |
| (1) | Unless otherwise specified, injector resistance specification is at 50-90°F (10-32°C). |
INJECTOR RESISTANCE SPECIFICATIONS
IDLE SPEED & MIXTURE
Note. Idle mixture is controlled by Powertrain Control Module (PCM). Idle speed is preset by manufacturer and is not adjustable.
THROTTLE POSITION (TP) SENSOR
Note. TP sensor is not adjustable. For further testing procedures, perform TP sensor related diagnostic test. See appropriate SELF-DIAGNOSTICS article.
| Application | (1) Volts |
|---|
| 3.1L & 3.4L | (2) |
| 3.8L | (3) |
| (1) Voltage range is from idle to wide open throttle. (2) Voltage range is from less than one volt at closed throttle to greater than 4 volts at wide open throttle. Scan tool range is 0-100 percent or 0.00-5.00 volts. (3) Throttle position (TP) angle is computed by the powertrain control module (PCM) from the TP sensor voltage. TP angle should display zero percent at idle and 100 percent at wide open throttle or 0.00-5.00 volts. |
| (1) | Voltage range is from idle to wide open throttle. |
| (2) | Voltage range is from less than one volt at closed throttle to greater than 4 volts at wide open throttle. Scan tool range is 0-100 percent or 0.00-5.00 volts. |
| (3) | Throttle position (TP) angle is computed by the powertrain control module (PCM) from the TP sensor voltage. TP angle should display zero percent at idle and 100 percent at wide open throttle or 0.00-5.00 volts. |
TP SENSOR VOLTAGE SPECIFICATIONS
