1996 Chevy Tahoe

BOBBYB70

MEMBER
1996 CHEVROLET TAHOE
V8
4WD
AUTOMATIC
140,000 MILES

At 45mph under very little load just cruising I get a what feels like a bog or bump never under 40 or after 65. Have done intake manifold gasket, O2 sensor, new distributor plugs and wires. I'm at a loss any ideas?

Sunday, March 14th, 2010 AT 4:22 PM

3 Replies

MMPRINCE4000

MECHANIC
8,548 POSTS

If you are positive it is engine related, then have ignition module and coil checked.

This will be difficult to isolate since it happens only under specific conditions.

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Monday, March 15th, 2010 AT 8:35 AM

BOBBYB70

MEMBER
2 POSTS

I drove the truck for a long period of time, its only a second car and found it only does the bog or bang in overdrive runs fine in 3rd must be a tranny issue. Shifts fine no other issues do u think it could be a lock up solenoid problem or at 140k the tranny is going?

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Wednesday, March 17th, 2010 AT 10:25 PM

MMPRINCE4000

MECHANIC
8,548 POSTS

Yes could be the TCC solenoid. Some are replaceable outside trans. Check with local trans shop. Transmissions are very complicated and you need a pro to diagnose it.

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Friday, March 19th, 2010 AT 7:09 AM