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 MANUALSPONTIAC1983J2000/SUNBIRD L4-121 2.0LREPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSCUSTOMER INTERESTDOOR LOCK KNOB - FALLS OFF OF LOCK ROD
1983 Pontiac J2000/Sunbird L4-121 2.0L
Door Lock Knob - Falls Off of Lock Rod
1983 Pontiac J2000/Sunbird L4-121 2.0LSECTION Door Lock Knob - Falls Off of Lock Rod
Number 84-10-21 Date 7/84
Subject: DOOR INSIDE LOCKING KNOB FALLING OFF THE DOOR INSIDE LOCKING ROD - 1982-84 6000, FIREBIRD, 2000, FIERO, AND 1980-84 PHOENIX CARS
FIGURE 1 - LOCKING ROD:
This condition has three possible causes (see Figure 1).
1. The hole in the back side of the locking knob that receives the end of the locking rod has a mold that is too shallow. Therefore, the locking rod does not seat properly into the locking tongs.
2. The end of the locking rod is too long creating the same condition as a shallow hole.
3. The locking tongs on the locking knob are not molded properly and, therefore do not hold the locking rod.
To correct the condition due to (1) the shallow hole or (2) the long ended locking rod, remove material from the end of the rod to bring the specified dimension in Figure 1 to 3/8".
To correct the condition due to (1) the shallow hole or (3) improperly molded locking tongs, replace the knob with a new one, Part Number 20380980 (bright) or 20380981 (black).
WARRANTY INFORMATION
T3135 .2 hr.
RENDER: 1.0x
NO RELATED
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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.