Astro Van L AWD V6-262 4.3L VIN Z (1994)
Speedometer Head: Customer Interest
Inoperative, Erratic Speedometer/Shifting/DTCs Set
FILE IN SECTION: 8 - Chassis/Body Electrical
BULLETIN NO.: 46-82-03A
DATE: June, 1995
SUBJECT:
Inoperative or Erratic Speedometer and/or Vehicle Shifts Down Into Second Gear or Will Not Shift Out of Second Gear (Replace Connector C24O)
MODELS:
1993-94 Chevrolet and GMC Truck M/L Vans
with 4L6OE Transmission (RPO M30)
This bulletin being revised to correct the parts information. Please Discard Corporate Bulletin Number 46-82-03 (Section 8 - Chassis/Body Electrical).
CONDITION
Some owners may experience: inoperative or erratic speedometer, which could result in setting a Diagnostic Trouble Code 24 or 72; the vehicle shifting
down into second gear, which may set a Diagnostic Trouble Code 24; or the vehicle will not shift out of second gear, which could result in a Diagnostic
Trouble Code 72.
CAUSE
Moisture in the instrument panel harness C240 connector.
CORRECTION
This connector is located on the passenger side kick panel (Figure 1). Determine source of moisture and install proper seal to prevent recurrence of
moisture intrusion. Replace C240 connector with connectors (P/N 12167122 and 12125675) and terminals (P/N 12045773). Use silicone grease on
terminals to prevent corrosion. Proper procedures for replacement of connectors and terminals will be found in M/L Service Manual # NATP-9443,
Section 8A-2. Be certain to label wires prior to replacing connectors, to assure proper location in new connectors.
