99 suburban HELP

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99 suburban HELP

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Chevrolet Forum >> Chevy Trucks, Vans & SUV's >> Suburban >> 99 suburban HELP

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99 suburban HELP - 1/31/2008 4:39:29 PM

LJDC

Posts: 2
Joined: 1/31/2008
Status: offline

okay this is the 'problem'whole trucks 'shakes' between 60-66mphhave already done the following Nov 06 the trainy had to be redone...i still do not think its right thoughall thru 2007 the following has been done to 'try' and fix this issue complete tune-up .... as we know is far from cheap for the truckthe spider has been done twice.....they redid it under warrenty thinking that it was defectivethe belt has been replaced the EGR valve...the valve by the 4th cylinderthey redid all the wires & plugs again also.....the distributer cap....compression testkeeps coming up the 4th cylinder...........um a sensor was also done..... still shakes at the same mph...HELP!!!!!

Post #: 1

RE: 99 suburban HELP - 1/31/2008 4:53:05 PM

navyshrink

Posts: 11
Joined: 1/13/2008
Status: offline

Your problem is most likely that your tires need to be balanced. Occasionally you lose a weight and you get a shimmy at a specific speed usually between 60-70 mph.

(in reply to LJDC)

Post #: 2

RE: 99 suburban HELP - 1/31/2008 4:55:57 PM

LJDC

Posts: 2
Joined: 1/31/2008
Status: offline

thats the other thing I did have done 'twice'...

(in reply to navyshrink)

Post #: 3

RE: 99 suburban HELP - 2/1/2008 1:00:43 PM

shawnvw

Posts: 832
Joined: 1/18/2008
Status: offline

driveshaft imbalance?...sometimes a weight will come off and cause a vibration

(in reply to LJDC)

Post #: 4

RE: 99 suburban HELP - 2/19/2008 7:48:26 AM

flycast47

Posts: 6
Joined: 2/19/2008
Status: offline

Similar problem with our '99 Suburban was due to bad universal joints. The OE joints cannot be lubricated and will lose their lubricant by 90,000 to 120,000 miles. Replacement u-joints have lubrication fittings on them and should last much longer (if you grease them).

(in reply to LJDC)

Post #: 5