1990 Pontiac Trans Sport Service and Repair Manual

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Factory-Grade Data

1990 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

1990 Pontiac Trans Sport Recalls & Complaints

NHTSA #89V16400002/10/1989Component: SEATS

THE REAR MODULAR SEAT FRAME HOLD-DOWN HOOKS MAY NOT MEET THE REQUIRED PULL FORCE AT THE REAR SET ANCHORAGE.

Consequence

VEHICLES WOULD NOT CONFORM TO FMVSS 207.

Remedy

REPLACE REAR HOLD DOWN HOOKS AND PIVOT RIVETS WITH HEAT TREATED HARDWARE.

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

19960129Component: ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASHFire reported

THE VAN WAS PARKED ALL DAY IN FRONT OF THE HOUSE AND FOR NO REASON THE VAN WAS ON FIRE. THE FIRE WAS COMING FROM THE DASH BOARD. TT

20051031Component: STRUCTURE:FRAME AND MEMBERS

DT: THE CONTACT WAS SLOWING DOWN TO MAKE A TURN WHEN THE ENGINE CRADLE MALFUNCTIONED DUE TO RUST. THE ENGINE AND TRANSMISSION NEARLY FELL OUT OF THE VEHICLE. WHEN THIS HAPPENED THE STEERING LINKAGE D

20051031Component: STEERING:LINKAGES

DT: THE CONTACT WAS SLOWING DOWN TO MAKE A TURN WHEN THE ENGINE CRADLE MALFUNCTIONED DUE TO RUST. THE ENGINE AND TRANSMISSION NEARLY FELL OUT OF THE VEHICLE. WHEN THIS HAPPENED THE STEERING LINKAGE D

20010608Component: STRUCTURE

IN REGARDS TO THE RECALL ON THIS VEHICLE #97016 OR ALLDATA # 97VO58000: MY REAR CRADLE BOLTS WENT OUT THE OTHER DAY. I HAD THE CAR TOWED TO A PRIVATE SERVICE STATION THAT INFORMED ME THE PART WAS UNDE

20010411Component: STRUCTURE:FRAME AND MEMBERS

FRONT END WAS WOBBLING IN STEERING. CONSUMER HAD AN ALIGNMENT SHOP TO ALIGN VEHICLE, BUT AS THE MECHANIC EXAMINED VEHICLE, HE SAW SUBFRAME ON RIGHT SIDE WAS RUSTED. BEFORE CONFIRMING WORK, CONSU

Showing the 5 most serious of 64 complaints filed with NHTSA.

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