Vortec 4800 4.8L V8 | Chevy Silverado and GMC Sierra Forum

10 mpg 70% highway 30% city, why is it so bad

9

140

by Sperry

2013 Sierra with original plugs @ 102,000

2

22

816

by Sperry

Overheating and no heat

12

2K

Silverado 4.8 Delayed start / long crank when warm

2 3

56

8K

Help with p0122

4

147

P0101 Code help needed

4

163

by B52Bombardier1

Swap radiator support *without* disconnecting radiator?

3

344

07 4.8 silverado. po69e, po191

0

189

02 silverado 1500 4x4 vibration issues

oortiz538
22 d ago
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N/A

normal operating temp.

16

33K

Chev 4.8 poof noise

4

242

Chasing down catalyst codes

13

473

2000 GMC Sierra 1500 4.8L Voltage problem

1

211

by B52Bombardier1

6

309

Runs great, once it will start!

1

236

by B52Bombardier1

4

441

2

447

99 Silverado bucking

5

322

Annoying dropping oil pressure

2

26

771

by Bradley21sanders

Oil pressure gauge problems

4

1K

by davester3500

9

1K

by Leveled17yeti

My 4.8 making metalish squeaking noise after it warms up need help please help can't figure it out it's coming from the harmonic balancer area but sou

6

443

by Tbone Shuffle

Engine shops in Atlanta Ga

8

488

by Scrapyard John

Replaced knock sensors now it's really messed up

3

446

Possible water pump change out, confirmation? Picture

6

550

Vented oil filler cap?

4

460

by Larry-Cleveland

Cruise control won’t work, already replaced brake light switch

10

465

by 02-Z71

Maf sensor no voltage or signal

3

438

by Leveled17yeti

Upper radiator hose retention clip?

6

699

by Artc

Heat/air conditioner stopped working .heatercore?now radiator leaking coolant .help please.

10

431

Tune vs Throttle Booster

8

666

4.8L- Oil Pump/ Funky Oil Pressure- Future Engine Swap?

3

431

4.8 cam options

5

475

Starting problems

2

393

6

474

by Sebastian345