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 MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 97 (REMOTE KEYLESS ENTRY SYSTEM)SYSTEM TESTSTEST B: DOOR LOCK & UNLOCK FUNCTION INOPERATIVE WITH TRANSMITTER
1998 Chevrolet Suburban K2500, 7.4 J, Part Time
Test B: Door Lock & Unlock Function Inoperative With Transmitter
1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Test B: Door Lock & Unlock Function Inoperative With Transmitter
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, 2002 Chevrolet Chevy Express, and 2001 GMC Savana Special. However, it is still accessible from the selected car via links, so may be relevant.
- Check operation of keyless entry system. See OPERATION . Go to next step.
- Press door lock button on transmitter. If door locks do not operate correctly, go to next step. If door locks operate correctly, check for intermittent problem. Check all applicable component connections. See COMPONENT LOCATIONS and WIRING DIAGRAMS .
- Lock and unlock door locks using controls inside vehicle. If system operates correctly, go to next step. If system does not operate correctly, see appropriate POWER DOOR LOCKS article.
- Test transmitter operation. See TRANSMITTER TEST under COMPONENT TESTS. If tone sounds and Green light illuminates on keyless entry tester when each button is pressed, go to next step. If transmitter does not operate as specified, go to step 7 .
- Turn ignition off. Disconnect RCDLR connector. RCDLR is attached to cowl above engine cover. Disconnect power door lock relay. Behind center of instrument panel, above engine cover. See Figure . Check continuity of lock circuit between terminal "R" on RCDLR harness connector and terminal "F" on relay harness connector. See Figure and Figure . Check continuity of unlock circuit between terminal "B" on RCDLR harness connector and terminal "A" on relay harness connector. Repair either circuit as necessary. After repair, go to step 9 . If both circuits are okay, go to next step.
- Check RCDLR harness connector. Ensure terminals are clean and tight. Repair connector as necessary. After repair, go to step 9 . If no problems are found, go to next step.
- Replace transmitter. Program all transmitters. See TRANSMITTER PROGRAMMING under PROGRAMMING. Go to step 9 .
- Replace RCDLR. Program all transmitters. See TRANSMITTER PROGRAMMING under PROGRAMMING. Go to next step.
- Press each button on transmitter. If keyless entry system does not operate correctly, go to step 3 . If keyless entry system operates correctly, repair is complete.
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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.