Question on 4x4 lockouts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

35boulder · 09-07-2018, 11:57 AM

Since I'm seeing lots of 4x4 trucks on this forum and mine is a 2wd I have a question about the lockouts? Why are some of the knobs yellow and others are blue? Is this a 1/2 vs 3/4 ton variant? Thanks

**too much stuff** · 09-07-2018, 01:37 PM

Quote:

Originally Posted by 35boulder

Since I'm seeing lots of 4x4 trucks on this forum and mine is a 2wd I have a question about the lockouts? Why are some of the knobs yellow and others are blue? Is this a 1/2 vs 3/4 ton variant? Thanks

The 67-68 were a cast aluminum. 69-72 chevy were blue in 1/2 or 3/4 ton. GMC used red in the 3/4 tons. I think the early 69 chevy 1/2 tons were red also. Anything in yellow is 73 and newer. Not sure if this is exactly correct, but should be close.

palallin · 09-07-2018, 02:30 PM

Datum: my '69 has red (well, pink, now).

57taskforce · 09-07-2018, 02:47 PM

Quote:

Originally Posted by too much stuff

The 67-68 were a cast aluminum. 69-72 chevy were blue in 1/2 or 3/4 ton. GMC used red in the 3/4 tons. I think the early 69 chevy 1/2 tons were red also. Anything in yellow is 73 and newer. Not sure if this is exactly correct, but should be close.

I always thought the cast aluminum hubs went thru 69 then 70 had the red dials 71-72 were blue and yellow were 73+.

**MJN** · 09-07-2018, 03:13 PM

Quote:

Originally Posted by too much stuff

The 67-68 were a cast aluminum. 69-72 chevy were blue in 1/2 or 3/4 ton. GMC used red in the 3/4 tons. I think the early 69 chevy 1/2 tons were red also. Anything in yellow is 73 and newer. Not sure if this is exactly correct, but should be close.

71-72 GMC were blue as well, at least K2500's were. From what I recall red was 69/70 GM and Ford.

**tim71** · 09-07-2018, 09:40 PM

My 71 K1500 has it's original blue dial lockouts...

**DeadheadNM** · 09-08-2018, 11:11 AM

Red plastic dials were used on OEM hubs in the 1970 model year for 3/4t trucks (69 also?). Red 1/2t in 69. Blue for 71-72 for Chevy - not sure on GMC.

Here's a red 70 3/4t dial: http://67-72chevytrucks.com/vboard/s...7&postcount=10 and http://67-72chevytrucks.com/vboard/s...58&postcount=2

69 Blazer w red dials: http://67-72chevytrucks.com/vboard/s...5&postcount=17

09-07-2018, 11:57 AM	#1
35boulder Registered User Join Date: Oct 2015 Location: Dallas Texas Posts: 1,380	Question on 4x4 lockouts Since I'm seeing lots of 4x4 trucks on this forum and mine is a 2wd I have a question about the lockouts? Why are some of the knobs yellow and others are blue? Is this a 1/2 vs 3/4 ton variant? Thanks

09-07-2018, 02:30 PM	#3
palallin Registered User Join Date: Jul 2002 Location: St. James, MO Posts: 1,239	Re: Question on 4x4 lockouts Datum: my '69 has red (well, pink, now). __________________ '69 Longstep K-10: 327/SM465/T-221/Closed Knuckle Dana44/12-bolt.

09-07-2018, 09:40 PM	#6
tim71 Senior Member Join Date: Oct 2015 Location: Brownsburg, IN Posts: 1,072	Re: Question on 4x4 lockouts My 71 K1500 has it's original blue dial lockouts... Attached Images __________________ 1972 Blazer Highlander 1971 GMC K1500 SWB (sold)

09-08-2018, 11:11 AM	#7
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,284	Re: Question on 4x4 lockouts Red plastic dials were used on OEM hubs in the 1970 model year for 3/4t trucks (69 also?). Red 1/2t in 69. Blue for 71-72 for Chevy - not sure on GMC. Here's a red 70 3/4t dial: http://67-72chevytrucks.com/vboard/s...7&postcount=10 and http://67-72chevytrucks.com/vboard/s...58&postcount=2 69 Blazer w red dials: http://67-72chevytrucks.com/vboard/s...5&postcount=17 __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland Last edited by DeadheadNM; 09-08-2018 at 11:38 AM. Reason: Added



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