On vans with rear AC, the AC may stop blowing cold air due to a damaged AC line near the back of the engine. It is common for these lines to rub on the engine block, causing a hole in the line and a refrigerant leak.Google+
Car Problem Reports
Chevrolet Astro Rear AC On Vans May Stop Working
Chevrolet Astro Problem
Average Mileage: 141,569 mi (67,000 mi - 238,000 mi)
Visitor, 2004 Chevrolet Astro, 138,000 mi
rear ac line leaking...looking to cut & seal those lines & just use front a/c
Visitor, 2000 Chevrolet Astro, 99,000 mi
bought the van used and found out the ac will blow in the front but not in the rear.Had refrigerant put in and ac still wont blow out cold air. rear ac just wont blow at all.??
AC quit working. Fans work great, but no cold air for AC in the summer
Heather rear and front work fine.
Visitor, 1995 Chevrolet Astro, 121,000 mi
no ac cannot find leaks in front of vehicle / has a rear ac unit
Visitor, 2003 Chevrolet Astro, 67,000 mi
Ac has lost it's charge. I refilled the freon and the ac started to cool again. The compressor stopped clicking on and off. Well a day later the compressor started clicking again. Now I guess I'll be looking for a leak. Also the rear ac is still not working. I was hoping it was just because of the low freon. It has to have a leak for it to be low on freon anyway.
Visitor, 2003 Chevrolet Astro, 115,000 mi
the previous owner fixed the same issue. Mechanic take a huge precausion so this time hose rubed to exhaust manifold rather than engine body. I'm going to fix it.
Visitor, 2005 Chevrolet Astro, 146,222 mi
Ac not working at all
Visitor, 1990 Chevrolet Astro
Found that the hard aluminum line wore thru at a mounting bracket on the frame. Had to replace the entire line. Not a cheap fix.
AC not working, prob leak/no refrigerant in system. Also, rear AC fan out.