dtc p0300 chrysler

 

Vehicles Affected:

2015-2019 Cadillac Escalade

2016-2019 Cadillac CTS-V

2014 Chevrolet Silverado 1500

2014-2019 Chevrolet Corvette

2015-2018 Chevrolet Silverado

2015-2019 Chevrolet Suburban, Tahoe

2016-2019 Chevrolet Camaro

2019 Chevrolet Silverado LD

2014 GMC Sierra 1500

2015-2018 GMC Sierra

2015-2019 GMC Yukon, Yukon XL

2019 GMC Sierra Limited

Equipped together with a 5.3L Engine (RPO L83) and then 6.2L Engine (RPO L86, LT1, LT4)

Condition:

The Malfunction Indicator Lamp (MIL) ON and/or an instrument misfire/tick noise. The DTC P0300 accept them into history.

Cause:

This may lie brought on via some concerning the accordant conditions:

Active fuel management (AFM) lifter to that amount is automatically collapsed and/or stuck entire of the time.

Internal locking peg harm in the lifter, fit in conformity with salad oil aeration.

A lifter has collapsed or is caught within the lifter bore.

The apparatus may additionally have a bend try rod.

Correction:

Inspect the camshaft for damage whilst the lifters are eliminated beyond the engine. If harm is found, substitute the camshaft.

If employment statistics prognosis no longer isolates the reason for this concern, the valve operation ought to stand inspected.

If the valve(s) are not moving, exchange the valve lifter oil diverse and affected bank on AFM lifters.

If the lifter has looped the bore, the guides additionally stay replaced.

Service Procedure:

There are twain selected strategies for disposing of the lifter when stuck between the bore:

1. Use stain grips along a pass hammer.

Note: Be assured NOT according to pry off the sealing surface of the block, so shown between the premise below.

2. Use vice grips along a tiny pry bar.

Typically, some regarding the above elect tactics will recover the lifter so much is caught into the bore. If not, the engine wishes necessity in imitation of keep replaced.

With the lifter removed, keep conforming with inspecting the bore because of any damage. Typically, the lifter bores will seem helpful together with no omen of the damage.