diff --git a/blockchain/block/block.go b/blockchain/block/block.go
index 7131186157..f1df44f549 100644
--- a/blockchain/block/block.go
+++ b/blockchain/block/block.go
@@ -8,6 +8,7 @@ package block
 import (
 	"time"
 
+	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/iotexproject/go-pkgs/hash"
 	"github.com/iotexproject/iotex-proto/golang/iotextypes"
 	"github.com/pkg/errors"
@@ -120,3 +121,33 @@ func (b *Block) HasBlob() bool {
 	}
 	return false
 }
+
+func (b *Block) WithBlobSidecars(sidecars []*types.BlobTxSidecar, txhash []string, deser *action.Deserializer) (*Block, error) {
+	scMap := make(map[hash.Hash256]*types.BlobTxSidecar)
+	for i := range txhash {
+		h, err := hash.HexStringToHash256(txhash[i])
+		if err != nil {
+			return nil, err
+		}
+		scMap[h] = sidecars[i]
+	}
+	for i, act := range b.Actions {
+		h, _ := act.Hash()
+		if sc, ok := scMap[h]; ok {
+			// add the sidecar to this action
+			pb := act.Proto()
+			blobData := pb.GetCore().GetBlobTxData()
+			if blobData == nil {
+				// this is not a blob tx, something's wrong
+				return nil, errors.Wrap(action.ErrInvalidAct, "tx is not blob type")
+			}
+			blobData.BlobTxSidecar = action.ToProtoSideCar(sc)
+			actWithBlob, err := deser.ActionToSealedEnvelope(pb)
+			if err != nil {
+				return nil, err
+			}
+			b.Actions[i] = actWithBlob
+		}
+	}
+	return b, nil
+}
diff --git a/blockchain/blockdao/blockdao.go b/blockchain/blockdao/blockdao.go
index 842d252f08..60a900c802 100644
--- a/blockchain/blockdao/blockdao.go
+++ b/blockchain/blockdao/blockdao.go
@@ -19,6 +19,7 @@ import (
 
 	"github.com/iotexproject/iotex-core/action"
 	"github.com/iotexproject/iotex-core/blockchain/block"
+	"github.com/iotexproject/iotex-core/db"
 	"github.com/iotexproject/iotex-core/pkg/lifecycle"
 	"github.com/iotexproject/iotex-core/pkg/log"
 	"github.com/iotexproject/iotex-core/pkg/prometheustimer"
@@ -308,14 +309,14 @@ func (dao *blockDAO) PutBlock(ctx context.Context, blk *block.Block) error {
 
 func (dao *blockDAO) GetBlob(h hash.Hash256) (*types.BlobTxSidecar, string, error) {
 	if dao.blobStore == nil {
-		return nil, "", errors.New("blob store is not available")
+		return nil, "", errors.Wrap(db.ErrNotExist, "blob store is not available")
 	}
 	return dao.blobStore.GetBlob(h)
 }
 
 func (dao *blockDAO) GetBlobsByHeight(height uint64) ([]*types.BlobTxSidecar, []string, error) {
 	if dao.blobStore == nil {
-		return nil, nil, errors.New("blob store is not available")
+		return nil, nil, errors.Wrap(db.ErrNotExist, "blob store is not available")
 	}
 	return dao.blobStore.GetBlobsByHeight(height)
 }
diff --git a/chainservice/builder.go b/chainservice/builder.go
index afd486abfa..97388a8005 100644
--- a/chainservice/builder.go
+++ b/chainservice/builder.go
@@ -524,11 +524,27 @@ func (builder *Builder) buildBlockSyncer() error {
 	p2pAgent := builder.cs.p2pAgent
 	chain := builder.cs.chain
 	consens := builder.cs.consensus
+	blockdao := builder.cs.blockdao
 
 	blocksync, err := blocksync.NewBlockSyncer(
 		builder.cfg.BlockSync,
 		chain.TipHeight,
-		builder.cs.blockdao.GetBlockByHeight,
+		func(height uint64) (*block.Block, error) {
+			blk, err := blockdao.GetBlockByHeight(height)
+			if err != nil {
+				return blk, err
+			}
+			sidecars, hashes, err := blockdao.GetBlobsByHeight(height)
+			if errors.Cause(err) == db.ErrNotExist {
+				// the block does not have blob or blob has expired
+				return blk, nil
+			}
+			if err != nil {
+				return nil, err
+			}
+			deser := (&action.Deserializer{}).SetEvmNetworkID(builder.cfg.Chain.EVMNetworkID)
+			return blk.WithBlobSidecars(sidecars, hashes, deser)
+		},
 		func(blk *block.Block) error {
 			if err := consens.ValidateBlockFooter(blk); err != nil {
 				log.L().Debug("Failed to validate block footer.", zap.Error(err), zap.Uint64("height", blk.Height()))