1991 Pontiac Trans Sport Service and Repair Manual

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Factory-Grade Data

1991 Pontiac Trans Sport service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical diagnostics with wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more

Trims covered

  • Base Mini Passenger Van 3-Door

Engines covered

  • 3.1L 189Cu. In. V6 GAS OHV Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

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Vehicle Safety Data

1991 Pontiac Trans Sport Recalls & Complaints

NHTSA #92V01200028/01/1992Component: STRUCTURE:BODY

THE GLOVE COMPARTMENT DOOR WILL NOT REMAIN CLOSED DURING CERTAIN LOAD FORCES ASSOCIATED WITH A VEHICLE CRASH. THIS DOES NOT COMPLY WITH THE REQUIREMENTS OF FMVSS 201.

Consequence

IN THE EVENT OF AN ACCIDENT, THE GLOVE COMPARTMENT DOORMAY OPEN AND RESULT IN OCCUPANT(S) INJURIES F

Remedy

REPLACE THE CURRENT UPPER GLOVE COMPARTMENT DOOR WITH A REDESIGNED UPPER GLOVE COMPARTMENT DOOR WHIC

NHTSA #99I00300008/06/1999Component: SEATS

THIS IS NOT A SAFETY RECALL IN ACCORDANCE WITH THE SAFETY ACT. HOWEVER, IT IS DEEMED A SAFETY IMPROVEMENT CAMPAIGN BY THE AGENCY. VEHICLE DESCRIPTION: MINIVANS EQUIPPED WITH FRONT BUCKET SEATS. T

Consequence

THE SEAT COULD SUDDENLY FALL BACKWARD, DISTRACTING THE DRIVER, INCREASING THE RISK OF A CRASH.

Remedy

DEALERS WILL TIGHTEN OR REPLACE THE BOLTS AT NO CHARGE TO THE OWNERS. THIS POLICY IS IN EFFECT UNTI

NHTSA #97V05800008/04/1997Component: STRUCTURE

VEHICLE DESCRIPTION: PASSENGER VEHICLES AND MINI VANS ORIGINALLY SOLD OR CURRENTLY REGISTERED IN THE FOLLOWING STATES: CONNECTICUT, ILLINOIS, INDIANA, MAINE, MASSACHUSETTS, MICHIGAN, NEW HAMPSHIRE,

Consequence

IF THIS WERE TO OCCUR WHILE THE VEHICLE WAS IN MOTION, A VEHICLE CRASH COULD RESULT.

Remedy

DEALERS WILL REPLACE THE REAR CRADLE BOLTS AND RETAINERS.

TSB #10246631

Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules

TSB #10007559

NO TCC APPLY, MALFUNCTION INDICATOR LAMP (MIL) ON, TCC SURGE, POSSIBLE P0740, P1870, OR 39 AFTER INSTALLATION OF A REMAN (SRTA) 4T60/4T60E. *TT

TSB #615073

SOME V6 ENGINES MAY, ON A VERY INFREQUENT BASIS, HAVE AN OIL ODOR CONDITION THAT IS GENERALLY ENCOUNTERED AFTER THE ENGINE'S OIL HAS BEEN CHANGED.TYPICALLY THE ODOR LASTS APPROXIMATELY 1000 MILES AFTER THE CHANGE OF OIL AND THEN DOES NOT RE

TSB #39075

FUEL TANK THUD/CLUNK. *TW

TSB #37936

SLIDING DOOR RATTLES. *TW

19970903Component: STRUCTURE:BODYCrash reported3 injured

WHILE DRIVING THE ROOF DISCONNECTED FROM VEHICLE, LOST CONTROL, RESULTING IN A CRASH/INJURIES. VEHICLE WAS TOTALED. *AK

19970623Component: POWER TRAIN:AXLE ASSEMBLYCrash reported1 injured

CRACK IN REAR AXLE CAUSED AXLE TO DISCONNECT/FALL OFF WHILE DRIVING, DRIVER LOST CONTROL, VEHICLE ROCKED BACK/FORTH, COUNTER FLIPPED OVER, LANDED ON TOP, VEHICLE TOTALED. PLEASE PROVIDE VIN. *AK

19961218Component: ELECTRICAL SYSTEM:WIRINGFire reported

AN ELECTRICAL SHORT IN THE WIRING IN THE ROOF, CAUSING VEHICLE TO CATCH ON FIRE WHILE THE VEHICLE WAS PARKED. *AK

19950720Component: FUEL SYSTEM, GASOLINEFire reported

VEHICLE CAUGHT FIRE AND BURNT COMPLETELY, UNKNOWN REASONS FOR FIRE, PLEASE EXPLAIN. TT

20130228Component: STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS

OWNER WAS DRIVING AT 40 MPH WHEN THE VEHICLE PULLED TO THE LEFT. WAS ABLE TO AVOID ONCOMING TRAFFIC AND STOP VEHICLE, UPON INSPECTION OWNER NOTICED THE FRONT RIGHT OF STRUCTURE HANGING DOWN UPON FURTH

Showing the 5 most serious of 46 complaints filed with NHTSA.

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