INTRODUCTION
Use this article to quickly find specifications related to servicing and on-vehicle adjustments. This article may be used for quick reference when you are familiar with proper adjustment procedures and only need a specification.
CAPACITIES
| Application Engine | Cold Crank Amps @ 0°F (-18°C) | Reserve Capacity Minutes |
|---|
| "G" Van | 500 | 125 |
| "G" Van | 550 | 130 |
| "G" Van | 600 | 115 |
| "G" Van | 690 | 115 |
| "G" Van | 750 | 160 |
| "G" Van | 1075 | 200 |
| Application | (1) Quantity Qts. (L) |
|---|
| Crankcase | (2) 7.0 (6.5) |
| Cooling System (Includes Heater) | 13.8 (13.1) |
| Automatic Transmission (Dexron-III) (3) |
| 4L60-E | 5.0 (4.7) |
| 4L80-E | 7.7 (7.3) |
| Manual Transmission |
| NVG 3500 | (4) 2.2 (2.0) |
| NVG 4500 | (5) 4.0 (3.8) |
| (1) Fluid capacities listed are approximate. Always fill to FULL mark. (2) Includes oil filter capacity. (3) Drain and refill capacity only. Does not include torque converter. (4) Synchromesh Transmission Fluid (GM 12345349). (5) Castrol Syntorq LT transmission fluid. |
| (1) | Fluid capacities listed are approximate. Always fill to FULL mark. |
| (2) | Includes oil filter capacity. |
| (3) | Drain and refill capacity only. Does not include torque converter. |
| (4) | Synchromesh Transmission Fluid (GM 12345349). |
| (5) | Castrol Syntorq LT transmission fluid. |
SERVICE INTERVALS & SPECIFICATIONS
| Component | Interval (Miles) |
|---|
| Accessory Drive Belt | 60,000 |
| Air Cleaner | (1) |
| Engine Coolant | 150,000 |
| Fuel Filter | 30,000 |
| Oil & Filter | 5000 |
| (1) No scheduled replacement interval available at time of publication. Check and replace as necessary. |
| (1) | No scheduled replacement interval available at time of publication. Check and replace as necessary. |
BELT TENSION
| Application | Tension Lbs. (kg) |
|---|
| All Models | (1) |
| (1) Serpentine belt tension is maintained automatically by spring-tensioned idler pulley. Adjustment not necessary. |
| (1) | Serpentine belt tension is maintained automatically by spring-tensioned idler pulley. Adjustment not necessary. |
ENGINE COMPRESSION
| Application | Compression Ratio |
|---|
| 6.5L Diesel (VIN F) | 21.3:1 |
VALVE CLEARANCE
Note. All models are equipped with hydraulic lifters. Adjustments are not required.
FIRING ORDER
Note. For firing order, see illustration. (Scheme 4)
Firing Order. Scheme 4
INJECTION PUMP TIMING
Note. Diesel injection pump timing can be checked using scan tool. See DIESEL INJECTION PUMP TIMING (DEGREES BTDC @ RPM) table. For diesel injection pump timing adjustment procedures, see the ADJUSTMENTS - 6.5L DIESEL article.
| Application | Man. Trans. | Auto. Trans. |
|---|
| 6.5L | 3.5 @ Idle | 3.5 @ Idle |
DIESEL INJECTION PUMP TIMING
INJECTOR RESISTANCE
| Application | Ohms |
|---|
| All | 11.8-12.6 |
| (1) Injector resistance specification is at 50-95°F (10-35°C). |
| (1) | Injector resistance specification is at 50-95°F (10-35°C). |
INJECTOR RESISTANCE SPECIFICATIONS (1)
IDLE SPEED
Idle speed is not adjustable. PCM controls all fuel delivery/modes based on inputs from AAP, ECT and BARO sensors. System is equipped with an electronic fuel injection pump.
THROTTLE POSITION (TP) SENSOR
Throttle control is electronic with NO mechanical link from engine to accelerator pedal. The PCM monitors the position of accelerator pedal based on signals from a nonadjustable Accelerator Pedal Position (APP) module. The APP is mounted above the accelerator pedal.
