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Re: HVAC Blend Door issues. Control head or actuators?
Driver blend motor is on the bottom of the airbox between the beauty cover and the heater box near the transmission tunnel.
Passenger blend motor is on top of the airbox under a plenum tube. Supposedly you can reach it through the empty radio hole.
Look in the GMT800 FAQ sticky for the HVAC controller reset procedure.
Sometimes you can get the blend motors to operate properly again by resetting the controller.
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1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8
RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
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