constant repair

The a/c is operating on my 98 tahoe 5.7 4x4,but when I push the recirculation button to get optimum cooling ,the light works but there is no change in temp or blower speed. What should I be looking for or testing? thanks for the help.

jdmccright

You should be able to look under the dash on the passenger side and see the recirc door open and shut. There is a servo motor that operates the door. It may have failed or the door itself is stuck or jammed. Hope this helps!

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Current Garage:
2003 Pontiac Vibe 1.8L AWD
2003 GMC Envoy XL (aka "fat-a$$") - K&N air filter, otherwise stock.
1995 Chevrolet C2500 2wd, 5.7L - K&N air filter, otherwise stock...my weekend hauler.
1992 Toyota Camry LE 2.2L - K&N air filter.

Vehicle History:
2004 4.7L Dakota Quad Cab 4x4
1996 GMC Jimmy 4wd
1992 Chevrolet S10 Ext. Cab 4.3L
1995 Honda ST1100...my first (and only) new vehicle.
1980 Yamaha XS400
1980 Mercury Bobcat...my first car.

brcidd

If your temp setting is at full cold- then you are already in recirc- and hitting the light won't change it--put the temp setting in about halfway mode-- then hit the button- see if you hear it change...

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Automotive A/C Engineer with:

'95 Chev 3500, 454 Dually Crew Cab- 145k miles- Wife's Camel trailer puller.
'94 Astro- 370k miles
'94 Firebird Formula- 5.7L 180k miles- gone- blown head gasket
'92 Chevy Lumina Van 3.8L 264k miles
'86 GMC S-15 - 2.8L 154k miles
'86 Buick Park Ave 3.8L 199k miles- my daily driver
'77 Chevy Vega- 2.5L 175k miles gone but not forgotten
'68 Camaro 396 4 spd RS/SS -72k miles- my high school car!!

All but the Camaro and Firebird are white....

constant repair

thanks for the replys.I will try that tomorrow.

777stickman

Also, going into the "recirc" mode will not change the blower setting. If the recirc system is working properly you will hear a difference in air movement.

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"R57 3CAR" 210 2dr post. 420HP 355 F/I 4sp 3:42 posi. (Dale Earnhardt tribute done by me.)
75 GMC Vandura 3/4 Ton
78 Chevy K5 Blazer
98 Chevy K2500 Suburban LT/7.4
05 Dodge Ram 3500/Cummins (Wifes horse hauler)