The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 66 Suburban

bama63 · 05-29-2011, 07:43 PM

the modulator is on the passenger side rear of the trans and has the vacuum line going to it, but in my honest opinion it sounds like you lost your 2-3 clutch pack and need a rebuild. the statement "As I gave it gas, all the engine did was turn high rpms and the tranny did nothing, but when I let up off the gas the truck seemed to gain a bit more speed" is a definite sign your clutches are slipping the modulator only controls the shift points at low rpms before the Governor takes over hope this helps

05-29-2011, 07:43 PM	#9
bama63 Registered User Join Date: Jun 2010 Location: gadsden, alabama Posts: 468	Re: 66 Suburban - Transmission Woes! the modulator is on the passenger side rear of the trans and has the vacuum line going to it, but in my honest opinion it sounds like you lost your 2-3 clutch pack and need a rebuild. the statement "As I gave it gas, all the engine did was turn high rpms and the tranny did nothing, but when I let up off the gas the truck seemed to gain a bit more speed" is a definite sign your clutches are slipping the modulator only controls the shift points at low rpms before the Governor takes over hope this helps __________________ Due to financial constraints, the light at the end of the tunnel will be shut off until further notice Last edited by bama63; 05-29-2011 at 07:49 PM.