Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1999SUBURBAN K1500, 5.7 R, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS TESTS W/CODES - DIESELSELF-DIAGNOSTIC SYSTEMSCAN TOOL DATA
1999 Chevrolet Suburban K1500, 5.7 R, Automatic
Scan Tool Data
1999 Chevrolet Suburban K1500, 5.7 R, AutomaticSECTION Scan Tool Data
NOTE:
Information contained in the following table is typical of readings taken on vehicle with engine idling, upper radiator hose hot, throttle closed, transmission in Park or Neutral, closed loop status achieved and all accessories off (except as noted in tables). Not all devices and systems are used on all models. Refer to scan tool manufacturer's instructions.
SCAN TOOL DATA VALUES
| Parameter | Units Displayed | Typical Value | ||||
|---|---|---|---|---|---|---|
| A/B/C Range Sw. | On, On, On/Off, Off, Off | On/Off/On | ||||
| A/C Compressor | Engage/Disengage | Disengage | ||||
| A/C Relay | On/Off | Off | ||||
| A/C Request | On/Off | Off | ||||
| Actual EGR (1) | kPa | 80-104 (All RPMs) | ||||
| Actual Injector Pump Timing | Degrees | 4-10 @ Idle; 14-20 @ 2500 RPM | ||||
| APP Angle | Percent | 0 @ Idle; 4-12 @ 2500 RPM | ||||
| APP 1 | Volts | .44-.95 @ Idle; 8-1.3 @ 2500 RPM | ||||
| APP 2 | Volts | 3.9-4.5 @ Idle; 3.7-4.3 @ 2500 RPM | ||||
| APP 3 | Volts | 3.6-4.1 @ Idle; 3.5-4.0 @ 2500 RPM | ||||
| BARO | kPa | 65-104 (Varies W/Altitude) | ||||
| Boost Pressure | kPa | 60-170 (All RPMs) | ||||
| Brake Switch | Open/Closed | Open | ||||
| Calc. A/C Load | Counts | 0 | ||||
| Crank Ref. Missed | Counts | 0 (Missed) | ||||
| Cruise Active | On/Off | Off | ||||
| Cruise Brake Sw. | Open/Closed | Closed | ||||
| Cruise Switch | On/Off | Off | ||||
| Cylinder Air (1) | g/cyl | 0.3-1.0 (All RPMs) | ||||
| Desired Cyl. Air (1) | g/cyl | 0.3-1.0 (All RPMs) | ||||
| Desired EGR (1) | kPa | 80-104 (All RPMs) | ||||
| Desired Idle | RPM | 630-650 | ||||
| Desired Injector Pump Timing | Degrees | 4-10 @ Idle; 14-20 @ 2500 RPM | ||||
| DTC Set This Ign. | Counts | Yes/No | ||||
| ECT | °F (°C) | 185-221 (85-105) (Varies W/Temp.) | ||||
| ECT Sensor | Volts | 2-3 (Varies W/Temp.) | ||||
| EGR Adap. Learn (1) | Counts | 0-4 | ||||
| EGR Duty Cycle (1) | kPa | 0 (All RPMs) | ||||
| EGR Loop Status (1) | Open/Closed | Open | ||||
| EGR Sensor (1) | Volts | 4.6-4.85 (All RPMs) | ||||
| EGR Vent Sol. (1) | On/Off | Off | ||||
| Engine Load | Percent | 1-15 (1) | ||||
| Engine Load | Percent | 4-8 (2) | ||||
| Engine Run Time | Hr/Min/Sec | Varies W/Engine Run Times | ||||
| Engine Speed | RPM | ±100 From Desired | ||||
| Engine Torque (1) | Ft. Lbs. | 3-30 | ||||
| Engine Torque (2) | Ft. Lbs. | 7-10 | ||||
| ESO Solenoid | On/Off | On | ||||
| Fuel Rate | mm3 | 7-15 (All RPMs) | ||||
| Fuel Temperature | °F (°C) | 50-194 (10-90) | ||||
| Glow Plug | Volts | 0 | ||||
| Glow Plug System | Disabled/Enabled | Enabled (Key On) | ||||
| IAT | °F (°C) | 50-194 (10-90) (Varies W/Temp. & Load) | ||||
| Ignition Voltage (1) | Volts | 12-14 (± 0.4) | ||||
| Ignition Voltage (2) | Volts | 8-16 | ||||
| Injector Pump Cam Ref. Missed | Counts | 0 | ||||
| Injector Pump Sol. Closure Time | Milliseconds | 1.7-1.9 (All RPMs) | ||||
| Lift Pump | Volts | 12-16 (0.6 Higher Than Ignition) | ||||
| Lift Pump System | Disabled/Enabled | Enabled | ||||
| MAF (1) | Grams/Second | 20-35 @ Idle; 120-140 @ 2500 RPM | ||||
| MAF Frequency (1) | Hertz | 4000-4500 @ Idle; 7200-7800 @ 2500 RPM | ||||
| MIL | On/Off | Off | ||||
| No. Of DTCs | Counts | 0 | ||||
| PCM In VTD Fail Enable (1) | Yes/No | No | ||||
| Resume Switch | On/Off | Off | ||||
| SERVICE THROTTLE SOON Light | On/Off | Off | ||||
| Set Switch | On/Off | Off | ||||
| Start-Up ECT | °F (°C) | Varies (Depends On Start-Up ECT) | ||||
| TDC Offset | Degrees | +.75 To -1.75 (Factory Setting Varies W/Engine) | ||||
| TFT Sensor (2) | Volts | 1.8-2.2 | ||||
| Trans. Fluid Temp. | °F (°C) | 122-158 (50-70) | ||||
| Trans. Range | P/N, R, D1, D2, D3 | Park/Neutral | ||||
| Vehicle Speed | MPH/km/h | 0 | ||||
| VTD Auto Learn Timer (1) | Active/Inactive | Inactive | ||||
| VTD Fuel Disable (1) | Active/Inactive | Inactive | ||||
| VTD Fuel Disable Until Ign. Off (1) | Yes/No | No | ||||
| Wastegate Solenoid | Percent | 50-70 @ Idle; 20-40 @ 2500 RPM | ||||
| 1-2 Solenoid | On/Off | On | ||||
| 2-3 Solenoid | On/Off | Off | ||||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.