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09-28-2024, 01:39 PM
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Moderator
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,975
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Re: AC on my 2004 Silverado
Ground G200 is a straight up stud under the top cover of the dash back near the windshield. All kinds of fun to reach. Since the blower motor works on L & Med settings I'd guess this ground is just fine.
The blower resistor includes the HI speed fan relay. Check the 40A Blower fuse in the engine compartment fuse/relay panel has power with the ignition switched on. The diagram calls the L-BEC "Junction Block I/P". Check the RED wire into the blower resistor/relay pak and check the disconnect at the L-BEC behind the LH dash fuse panel. Check the orange wire from the blower switch to the resistor pak with the blower switched to HI. 
__________________
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...
And please let us know if and how your repairs were successful. Last edited by hatzie; 09-30-2024 at 12:16 PM. |
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