Repair manual
Wiring diagrams
GMC C3500 HD Repair Manual
Step-by-step repair and maintenance instructions for the GMC C3500 HD (1991–2000): removal, installation, adjustment, diagnostics and parameter checks with illustrations.
70sections
530articles
ENManual language
- SELF-DIAGNOSTICS
- ELECTRONIC SELF-DIAGNOSTICS
- RETRIEVING CODES WITHOUT SCAN TOOL - GASOLINE ENGINES
- RETRIEVING CODES WITH SCAN TOOL - GASOLINE ENGINES
- Preliminary Inspection
- Diagnostic Procedure
- Entering Or Exiting Diagnostic Mode
- TROUBLE CODE DEFINITIONS
- HARD OR INTERMITTENT TROUBLE CODE DETERMINATION - GASOLINE
- CLEARING TROUBLE CODES
- Diagnostic Charts
- Diagnostic Aids
- DTC 15, COOLANT TEMPERATURE SENSOR SIGNAL VOLTAGE HIGH
- DTC 22, TPS SIGNAL VOLTAGE LOW
- DTC 59, TRANS. FLUID TEMP. LOW
- DTC 68, TRANSMISSION COMPONENT SLIPPING
- DTC 79, TRANS. FLUID TEMP. HIGH
- DTC 86, LOW GEAR RATIO ERROR
- DTC 87, HIGH GEAR RATIO ERROR
- CHART A-2, NO DATA LINK CONNECTOR (DLC) DATA, WILL NOT DISPLAY DTC 12 OR MIL ON STEADY - "G" & "P" SERIES WITH TCM
- DTC 15, ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT HIGH (LOW TEMPERATURE INDICATED)
- DTC 59, TRANS. FLUID TEMP. SENSOR CIRCUIT HIGH (LOW TEMPERATURE INDICATED)
- DTC 72, VEHICLE SPEED SENSOR CIRCUIT LOSS (TRANSMISSION OUTPUT SIGNAL)
- 4WD-Low Diagnostic Check ("K" Series With Manually Or Electronically Shifted Transfer Case In High Position)
- SELF-DIAGNOSTIC SYSTEM
- Preliminary Inspection
- Diagnostic Procedure
- ENTERING & EXITING DIAGNOSTIC MODE
- CLEARING TROUBLE CODES
- SPECIAL TOOLS (DIAGNOSTIC)
- TEST EQUIPMENT
- DIAGNOSTIC TROUBLE CODE CHARTS
- ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK (MODELS WITH PCM)
- Diagnostic Aids
- DTC 13, ENGINE SHUTOFF SOLENOID CIRCUIT FAULT
- DTC 14, ECT SENSOR CIRCUIT LOW (HIGH TEMPERATURE INDICATED)
- DTC 15, ECT SENSOR CIRCUIT HIGH (LOW TEMPERATURE INDICATED)
- DTC 16, VEHICLE SPEED SIGNAL BUFFER FAULT
- DTC 17, HIGH RESOLUTION CIRCUIT FAULT
- DTC 18, PUMP CAM REFERENCE PULSE ERROR
- DTC 19, CRANKSHAFT POSITION REFERENCE ERROR
- DTC 21, APP NO. 1 CIRCUIT HIGH (MODELS WITH PCM)
- DTC 22, APP NO. 1 CIRCUIT LOW (MODELS WITH PCM)
- DTC 23, APP NO. 1 CIRCUIT RANGE FAULT
- DTC 24, VSS CIRCUIT LOW (TRANSMISSION OUTPUT SPEED SIGNAL)
- DTC 25, ACCELERATOR PEDAL POSITION (APP) NO. 2 CIRCUIT HIGH
- DTC 26, ACCELERATOR PEDAL POSITION (APP) NO. 2 CIRCUIT LOW
- DTC 27, APP NO. 2 CIRCUIT RANGE FAULT
- DTC 28, TRANSMISSION RANGE PRESSURE SWITCH CIRCUIT FAULT
- DTC 29, GLOW PLUG RELAY CIRCUIT FAULT
- DTC 31, EGR CONTROL PRESSURE/BARO SENSOR CKT LOW (HIGH VAC)
- DTC 32, EGR CIRCUIT ERROR
- DTC 33, EGR CONTROL PRESSURE/BARO SENSOR CKT HIGH (LOW VAC)
- DTC 34, INJECTION TIMING STEPPER (ITS) MOTOR CIRCUIT FAULT
- DTC 35, INJECTION PULSE WIDTH ERROR (RESPONSE TIME SHORT)
- DTC 36, INJECTION PULSE WIDTH ERROR (RESPONSE TIME LONG)
- DTC 39, TCC STUCK OFF (4L80-E)
- DTC 41, BRAKE SWITCH CIRCUIT FAULT
- DTC 42, FUEL TEMP CIRCUIT LOW (HIGH TEMP INDICATED)
- DTC 43, FUEL TEMP CIRCUIT HIGH (LOW TEMP INDICATED)
- DTC 44, EGR PULSE WIDTH ERROR
- DTC 45, EGR VENT ERROR
- DTC 46, MALFUNCTION INDICATOR LIGHT (MIL) CIRCUIT FAULT
- DTC 47, IAT SENSOR CIRCUIT LOW (HIGH TEMPERATURE INDICATED)
- DTC 48, IAT SENSOR CIRCUIT HIGH (LOW TEMPERATURE INDICATED)
- DTC 49, SERVICE THROTTLE SOON LIGHT CIRCUIT FAULT
- DTC 51, PROM PROBLEM (FAULTY OR INCORRECT PROM)
- DTC 54, PCM FUEL CIRCUIT ERROR
- DTC 57, PCM 5-VOLT SHORTED
- DTC 58, TRANSMISSION FLUID TEMP SENSOR CIRCUIT LOW (HIGH TEMP INDICATED) - 4L60-E & 4L80-E
- DTC 59, TRANSMISSION FLUID TEMP SENSOR CIRCUIT HIGH (LOW TEMP INDICATED) - 4L60-E & 4L80-E
- DTC 61, TURBO BOOST SENSOR CIRCUIT HIGH
- DTC 62, TURBO BOOST SENSOR CIRCUIT LOW
- DTC 63, APP NO. 3 CIRCUIT HIGH (MODELS WITH PCM)
- DTC 64, APP NO. 3 CIRCUIT LOW (MODELS WITH PCM)
- DTC 65, APP NO. 3 CIRCUIT RANGE FAULT
- DTC 66, 3-2 CONTROL SOLENOID CIRCUIT FAULT (4L60-E)
- DTC 67, TCC SOLENOID CIRCUIT FAULT (4L60-E)
- DTC 68, TRANSMISSION COMPONENT SLIPPING (4L80-E)
- DTC 69, TCC STUCK ON (4L60-E)
- DTC 69, TCC STUCK ON (4L80-E)
- DTC 71, SET/COAST SWITCH FAULT (MODELS WITH PCM)
- DTC 72, SPEED SENSOR CIRCUIT LOSS (TRANS OUTPUT SPEED SIGNAL) - 4L60-E & 4L80-E
- DTC 73, PRESSURE CONTROL SOLENOID CIRCUIT (CURRENT ERROR)
- DTC 74, TRANSMISSION INPUT SPEED SENSOR CIRCUIT (4L80-E)
- DTC 75, SYSTEM VOLTAGE LOW
- DTC 76, RESUME/ACCEL SWITCH FAULT
- DTC 78, WASTEGATE SOLENOID FAULT
- DTC 79, TRANSMISSION FLUID OVERTEMP - 4L60-E & 4L80-E
- DTC 81, 2-3 SHIFT SOLENOID CIRCUIT FAULT - 4L60-E & 4L80-E
- DTC 82, 1-2 SHIFT SOLENOID CIRCUIT FAULT - 4L60-E & 4L80-E
- DTC 83, TCC PWM SOLENOID CIRCUIT FAULT - 4L60-E & 4L80-E
- DTC 84, ACCELERATOR PEDAL POSITION (APP) CIRCUIT FAULT
- DTC 85, UNDEFINED RATIO ERROR (4L80-E)
- DTC 86, LOW RATIO ERROR (4L80-E)
- DTC 87, HIGH RATIO ERROR (4L80-E)
- DTC 88, TDC OFFSET ERROR
- DTC'S 91-98, CYLINDER BALANCE FAULT
- DTC 99, APP NO. 2 (5-VOLT REFERENCE FAULT)
- Engine Performance Diagnostic Routine Outline - General Information
- Engine Performance Safety Precautions
- Parasitic Load Explanation & Test Procedures - General Information 2
- Waveforms - Injector Pattern Tutorial - General Information 2
- Compressed Natural Gas Safety Precautions
- Electrostatic Discharge Warning - General Information
- State Emission Standards - Diesel
- Rpo Code Definitions (Rpo 001-19F)
- Rpo Code Definitions (Rpo 19H-2EL).
- Rpo Code Definitions (Rpo 2F1-44I).
- Rpo Code Definitions (Rpo 44L-5J9).
- Rpo Code Definitions (Rpo 5K0-6FF).
- Rpo Code Definitions (Rpo 6FG-76A).
- Rpo Code Definitions (Rpo 76D-7XD).
- Rpo Code Definitions (Rpo 7XF-8M0).
- Rpo Code Definitions (Rpo 8M1-9C0).
- Rpo Code Definitions (Rpo 9C1-A0F).
- Rpo Code Definitions (Rpo A0G-AR4).
- Rpo Code Definitions (Rpo AR5-BCP).
- Rpo Code Definitions (Rpo BCQ-C12).
- Rpo Code Definitions (Rpo C13-CUR).
- Rpo Code Definitions (Rpo Cut-Dir).
- Rpo Code Definitions (Rpo DR7-EHE).
- Rpo Code Definitions (Rpo EHF-F5P).
- Rpo Code Definitions (Rpo F5Q-G1V).
- Rpo Code Definitions (Rpo G1W-HFN).
- Rpo Code Definitions (Rpo Hfo-Jrg).
- Rpo Code Definitions (Rpo Jrh-Kly).
- Rpo Code Definitions (Rpo Klz-Lqx).
- Rpo Code Definitions (Rpo LQY-MW9).
- Rpo Code Definitions (Rpo Mwe-Odk).
- Rpo Code Definitions (Rpo Odl-Ora).
- Rpo Code Definitions (Rpo Orb-Pde).
- Rpo Code Definitions (Rpo PDF-QH6).
- Rpo Code Definitions (Rpo QH7-R8D).
- Rpo Code Definitions (Rpo R8E-T07).
- Rpo Code Definitions (Rpo T08-TJ0).
- Rpo Code Definitions (Rpo TJ1-U10).
- Rpo Code Definitions (Rpo U11-US9).
- Rpo Code Definitions (Rpo USB-VG9).
- Rpo Code Definitions (Rpo VGA-W5Y).
- Rpo Code Definitions (Rpo W5Z-XE3).
- Rpo Code Definitions (Rpo XE4-Y9Z).
- Rpo Code Definitions (Rpo YA2-ZD9).
- Rpo Code Definitions (Rpo Zde-Zzz).
- Engine Controls - Tests W/o Codes - Gasoline 3
- Engine Controls - Tests W/codes - 6.5L Diesel 4
- Engine Controls - Tests W/o Codes - 6.5L Diesel 3
- Engine Controls - Basic Testing - 6.5L Diesel 3
- Engine Controls - System/component Tests - 7.4L 4
- Engine Controls - Basic Testing - 7.4L 3
- Engine Controls - Tests W/codes - 7.4L 5