02 4.8 trans in an 02 5.3 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rsgriffith821 · 03-13-2016, 12:03 AM

I have a 2002 chevy 1500 2wd extended cab with the 5.3 and a bad transmission. I have a good 4l60e from the same truck in the same year with a 4.8. but when i plug the info for both trucks into the parts comparison checker, it tells me it wont work but i cant get a straight answer for why. Does any one know the differences between the two trans in 2002?

clinebarger · 03-13-2016, 06:54 PM

No worries....They will swap with no issues.

rsgriffith821 · 03-13-2016, 06:59 PM

Thank you for the reply. Just curious now but you you happen to know why it flagged it? Is there anything at all I need to look closely at like sensors, pigtails, or bolt patterns before I hoist it up under there?

clinebarger · 03-13-2016, 08:04 PM

The only thing I can think of is the Torque Converters may be different....

All 5.3L trucks have a "TMBX" converter 1500-1700 stall, Though most 4.8L engines also got a TMBX.

Some 4.8L got a "TLBX" 1800-2000 stall. Would still work fine on a 5.3L with a little boost in performance.

There is sticker on the converter cover that has the code....Post the code please.

03-13-2016, 12:03 AM	#1
rsgriffith821 Registered User Join Date: Mar 2016 Location: cordell oklahoma Posts: 2	02 4.8 trans in an 02 5.3 I have a 2002 chevy 1500 2wd extended cab with the 5.3 and a bad transmission. I have a good 4l60e from the same truck in the same year with a 4.8. but when i plug the info for both trucks into the parts comparison checker, it tells me it wont work but i cant get a straight answer for why. Does any one know the differences between the two trans in 2002?

03-13-2016, 06:54 PM	#2
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: 02 4.8 trans in an 02 5.3 No worries....They will swap with no issues.

03-13-2016, 06:59 PM	#3
rsgriffith821 Registered User Join Date: Mar 2016 Location: cordell oklahoma Posts: 2	Re: 02 4.8 trans in an 02 5.3 Thank you for the reply. Just curious now but you you happen to know why it flagged it? Is there anything at all I need to look closely at like sensors, pigtails, or bolt patterns before I hoist it up under there?

03-13-2016, 08:04 PM	#4
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: 02 4.8 trans in an 02 5.3 The only thing I can think of is the Torque Converters may be different.... All 5.3L trucks have a "TMBX" converter 1500-1700 stall, Though most 4.8L engines also got a TMBX. Some 4.8L got a "TLBX" 1800-2000 stall. Would still work fine on a 5.3L with a little boost in performance. There is sticker on the converter cover that has the code....Post the code please.



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