How To Remove Trans Oil Pan? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Gregski** · 09-02-2018, 10:52 AM

"Do you even know how to drive an automatic?" the famous Hangover quote comes to mind

So I am not a complete idiot but whilst lying under said ride a gorgeous 1969/71 350/350 true short box GMC 2WD I realized one may need to move the transmission crossmember out of the way to get to the rear 2 bolts on the transmission oil pan in order to drop said pan.

Man, I thought... them TV car drama shows never show that, they just go bzzz bzz , ha ha and the next thing you know their trans pan is in their hands.

So my question is, is that how it be on these trucks or do I have a non OEM cross membrane on mine?

I will upload a pic after I have some scrambled eggs here this mornin'.

Andy4639 · 09-02-2018, 11:03 AM

Yes every one I have worked on I did.

OregonNed · 09-02-2018, 01:30 PM

When I removed mine I was able to use a jointed socket extension to get in on those. My crossmember is stock. However, the previous owner elected
To leave the manual trans crossmember in the truck so we had to unbolt the trans and lift it slightly using a 4x4 on end on the fork of a small forklift. Fortunately we have a lift so the truck was up high to do this.

**Gregski** · 09-02-2018, 02:35 PM

Quote:

Originally Posted by Andy4639

Yes every one I have worked on I did.

thanks

**Gregski** · 09-02-2018, 02:35 PM

Quote:

Originally Posted by OregonNed

When I removed mine I was able to use a jointed socket extension to get in on those. My crossmember is stock. However, the previous owner elected
To leave the manual trans crossmember in the truck so we had to unbolt the trans and lift it slightly using a 4x4 on end on the fork of a small forklift. Fortunately we have a lift so the truck was up high to do this.

thank you, that helps

Rich69shortfleet · 09-03-2018, 10:48 AM

I've never had to touch the crossmember, just got after a couple of the bolts with an end wrench instead of a socket.

custom10nut · 09-03-2018, 12:50 PM

I use a short socket and an extension with the “Swivel” tip. It clears the crossmember just enough to access the bolts.

**Gregski** · 09-03-2018, 07:59 PM

Quote:

Originally Posted by custom10nut

I use a short socket and an extension with the “Swivel” tip. It clears the crossmember just enough to access the bolts.

copy that

09-02-2018, 10:52 AM	#1
Gregski Post Whore Join Date: Aug 2014 Location: Sacramento, CA Posts: 10,876	How To Remove Trans Oil Pan? "Do you even know how to drive an automatic?" the famous Hangover quote comes to mind So I am not a complete idiot but whilst lying under said ride a gorgeous 1969/71 350/350 true short box GMC 2WD I realized one may need to move the transmission crossmember out of the way to get to the rear 2 bolts on the transmission oil pan in order to drop said pan. Man, I thought... them TV car drama shows never show that, they just go bzzz bzz , ha ha and the next thing you know their trans pan is in their hands. So my question is, is that how it be on these trucks or do I have a non OEM cross membrane on mine? I will upload a pic after I have some scrambled eggs here this mornin'. Attached Images

09-02-2018, 11:03 AM	#2
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: How To Remove Trans Oil Pan? Yes every one I have worked on I did. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

09-02-2018, 01:30 PM	#3
OregonNed Registered User Join Date: Dec 2012 Location: Vancouver, Washington Posts: 1,644	Re: How To Remove Trans Oil Pan? When I removed mine I was able to use a jointed socket extension to get in on those. My crossmember is stock. However, the previous owner elected To leave the manual trans crossmember in the truck so we had to unbolt the trans and lift it slightly using a 4x4 on end on the fork of a small forklift. Fortunately we have a lift so the truck was up high to do this. __________________ 1968 Chevrolet C/10 LWB - 327, TH350 - 4/5 Drop

09-03-2018, 10:48 AM	#6
Rich69shortfleet Registered User Join Date: May 2016 Location: Waverly, NE Posts: 399	Re: How To Remove Trans Oil Pan? I've never had to touch the crossmember, just got after a couple of the bolts with an end wrench instead of a socket. __________________ 1965 Malibu SS L79 Restoration Page 1965 Two-Door Wagon Project Progress Page 2006 Pontiac GTO Preservation Project Rich Cummings

09-03-2018, 12:50 PM	#7
custom10nut Registered User Join Date: Apr 2015 Location: East Tn (In the heart of the Smoky Mtns) Posts: 1,893	Re: How To Remove Trans Oil Pan? I use a short socket and an extension with the “Swivel” tip. It clears the crossmember just enough to access the bolts.



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