hear a squeek when reversing - The 1947 - Present Chevrolet & GMC Truck Message Board Network

red72chevy · 03-25-2003, 11:34 PM

here's my problem,

when my truck is engaged in reverse and goin backward i hear a squeek. its horrible, and it isnt constant, i sounds like its rotating cause it goes faster then slower. is it my U-joint or what???? it also does it when i downshift from drive to 2nd (auto tranny). whats the deal? any help would be appreciated cause im a dumb 19 year old.

1972 chevy p/u longbed-grandpa's first new truck
350-72 impala engine donor (6oK miles, honned, new rings, new cam, like new)
edelbrock 600cfm carb
high rise polished intake
flowmaster exhaust
350 turbo tranny
cragar s/s rims
viper red

Fred T · 03-25-2003, 11:46 PM

You can't be that dumb. You're smart enough to know you have a problem, and smart enough to ask for help.

My first check would be the u-joints. Crawl underneath and stick a long screwdriver or rod through the joint and see if there is any slack in the joint. Works best if you're parked on a level surface so there isn't any load on the driveshaft.

yellowgmc · 03-26-2003, 12:08 AM

my money is on the u joints. that or you are squishing a lot of mice!

68speedalert · 03-26-2003, 01:59 AM

More important than looking for play in the ujoints, take a good flashight and look for rust coming from out of the caps.

BTW, put the trans in neutral and set the parking brake & block a wheel before checking for looseness.

You did hear the part about the block, right?

Steve

SteveNix · 03-26-2003, 02:04 AM

Sounds like a U joint to me. Check the caps

SteveNix · 03-26-2003, 02:05 AM

my mistake. 68speedalert just said that.

Hooter · 03-26-2003, 02:39 AM

could be a bad steady bearing too

**1970 CST Short Wide** · 03-26-2003, 10:40 AM

I'd bet on center support bearing if its a 2 piece shaft. If not U-Joints

Lippyp · 03-26-2003, 12:52 PM

As a start I'd take a grease gun under there whilst checking the parts mentioned above and grease any grease nipples you can find (well this is what we call them in the UK!) you find, may at least stop the noise and slow down any further deterioration.

Long Knight · 03-26-2003, 02:26 PM

I greased all my nipples yesterday! And I would indeed lube while you are under there. Where are you from red72?

red72chevy · 03-26-2003, 09:03 PM

thanks guys, i will do what ya'll said. im from southern indiana.

03-25-2003, 11:34 PM	#1
red72chevy Registered User Join Date: Oct 2001 Posts: 23	hear a squeek when reversing here's my problem, when my truck is engaged in reverse and goin backward i hear a squeek. its horrible, and it isnt constant, i sounds like its rotating cause it goes faster then slower. is it my U-joint or what???? it also does it when i downshift from drive to 2nd (auto tranny). whats the deal? any help would be appreciated cause im a dumb 19 year old. 1972 chevy p/u longbed-grandpa's first new truck 350-72 impala engine donor (6oK miles, honned, new rings, new cam, like new) edelbrock 600cfm carb high rise polished intake flowmaster exhaust 350 turbo tranny cragar s/s rims viper red

03-25-2003, 11:46 PM	#2
Fred T Cantankerous Geezer Join Date: Aug 2002 Location: Bel Aire, KS Posts: 6,264	You can't be that dumb. You're smart enough to know you have a problem, and smart enough to ask for help. My first check would be the u-joints. Crawl underneath and stick a long screwdriver or rod through the joint and see if there is any slack in the joint. Works best if you're parked on a level surface so there isn't any load on the driveshaft. __________________ Fred There is no such thing as too much cam...just not enough engine.

03-26-2003, 12:08 AM	#3
yellowgmc Getting cabin fever?!?!?! Join Date: Oct 2002 Location: chisholm, mn Posts: 1,679	my money is on the u joints. that or you are squishing a lot of mice! __________________ Member of the Discs Up Front Club 1972 GMC 1500 1994 F-150 XL 4x4 Tact is for people not whitty enough to be sarcastic

03-26-2003, 01:59 AM	#4
68speedalert Semi-Senior Member Join Date: Feb 2003 Location: Washington, MO Posts: 390	More important than looking for play in the ujoints, take a good flashight and look for rust coming from out of the caps. BTW, put the trans in neutral and set the parking brake & block a wheel before checking for looseness. You did hear the part about the block, right? Steve __________________ '68 50th Anniversery LWB Custom Fleetside, '77 305 v-8, turbo 350, factory speed alert (still works), '71 drivetrain w/front discs. Some call it ugly yellow, others call it Ochre '83 Jeep CJ-7, <80,000 miles, original owner '04 Chevy Suburban, 4x4, 2500, 6.0 ltr, Predator Diablo programmer '95 GMC K1500 Extended cab

03-26-2003, 02:04 AM	#5
SteveNix Registered User Join Date: Mar 2003 Location: Winnipeg, Manitoba Posts: 7	Sounds like a U joint to me. Check the caps __________________ Bart, a woman is like beer. They look good, they smell good, and you'd step over your own mother just to get one! --Homer Simpson

03-26-2003, 02:05 AM	#6
SteveNix Registered User Join Date: Mar 2003 Location: Winnipeg, Manitoba Posts: 7	my mistake. 68speedalert just said that. __________________ Bart, a woman is like beer. They look good, they smell good, and you'd step over your own mother just to get one! --Homer Simpson

03-26-2003, 02:39 AM	#7
Hooter My other Love Join Date: Aug 2001 Location: Castlegar B.C. Canada Posts: 4,085	could be a bad steady bearing too __________________ Castlegar B.C.The great white North (Canada Eh!) Hooter_5@hotmail.com First generation Monte Carlo club pictures of my life

03-26-2003, 10:40 AM	#8
1970 CST Short Wide Senior Moment Join Date: Mar 2002 Location: Pittsburg Ca Posts: 4,165	I'd bet on center support bearing if its a 2 piece shaft. If not U-Joints __________________ 1970 CST LS 1 6 speed Ford 9 inch Detroit Tru Track, Dakota Didgital, Vintage Air, QA1 Coil Overs Front & Rear Lots of FUN 2013 GMC PU, Oldest Son 71 GMC LWB. QA1 Suspension, Angry SB. Youngest Son 2019 GMC Diesil Dually. Youngest Son 2017 Toyota SUV Daughters car 2018 Traverse , Wife’s Ride Pittsburg Ca 94565

03-26-2003, 12:52 PM	#9
Lippyp English Chevy Owner Join Date: May 2002 Location: Shropshire, UK/ Lot, France Posts: 1,848	As a start I'd take a grease gun under there whilst checking the parts mentioned above and grease any grease nipples you can find (well this is what we call them in the UK!) you find, may at least stop the noise and slow down any further deterioration. __________________ Phil '67 C10 long fleet. 350/TH350, 4 bbl Carter, K&N, Dual exhaust, loads of stuff coming soon 2001 S10 Blazer Daily Driver, bone stock 4 door 4x4 with manual transmission

03-26-2003, 02:26 PM	#10
Long Knight Spank 'em if you got 'em! Join Date: Nov 2002 Location: Kansas City Posts: 628	I greased all my nipples yesterday! And I would indeed lube while you are under there. Where are you from red72? __________________ Long Knight '71 C-20, 350ci, TH350, Edl. 1406 Carb w/elec.choke, Ignitor ignition, Viper Tires, Orange Dipstick

03-26-2003, 09:03 PM	#11
red72chevy Registered User Join Date: Oct 2001 Posts: 23	thanks guys, i will do what ya'll said. im from southern indiana.



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