1991 Chevrolet Astro Service and Repair Manual

This factory service and repair manual for the 1991 Chevrolet Astro documents a single-engine van: the 4.3-liter overhead-valve V6 of 262 cubic inches, naturally aspirated and gasoline-fueled, is the only engine listed for the year. It goes into four bodies — standard and extended three-door vans in passenger and cargo form — offered as Base, CL, CS or LT. Dropping the four-cylinder simplifies the engine chapters, since one set of torque values, clearances and diagnostic charts now applies to every van the manual describes.

Engines covered

• 4.3L V6 (262 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• 3-door extended cargo van
• 3-door extended passenger van
• 3-door standard passenger van
• 3-door standard cargo van

Trims covered

• Base
• CL
• CS
• LT

Known issues on the 1991 Astro. Six recalls appear on the federal record. Two are restraint problems: front and mid-ship belts that ride above the pelvis, and a rear anchorage bar unable to hold the loads a crash imposes. A third is the seat recliner joint that fatigues its bolts until the backrest collapses rearward. A replacement fuel filter that can leak at the connection and two replacement lamp sets without amber side reflectors round it out. Brakes drive the complaint total of 116, at 50 alone, with electrical at 10 — hydraulic overhaul and circuit diagnosis both sit in this manual.